OGI Keiji

J-GLOBAL         Last updated: Apr 12, 2019 at 16:25
 
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Name
OGI Keiji
URL
http://www.me.ehime-u.ac.jp/labo/kikaisei/zairiki/kogi/kogi-e.htm
Affiliation
Ehime University
Section
Graduate School of Science and Engineering Engineering for Production and Environment
Job title
Professor

Research Areas

 
 

Academic & Professional Experience

 
Apr 2007
 - 
Today
Professor, Graduate School of Science and Engineering, Ehime University
 
Jan 2003
 - 
Mar 2007
Associate Professor, Department of Materials Science and Engineering, Ehime University
 
Apr 2000
 - 
Dec 2002
Assistant Professor, Department of Materials Science and Engineering, Ehime University
 
Oct 1995
 - 
Mar 2000
Research Associate, Research Institute for Applied Mechanics, Kyushu University
 
Feb 1999
 - 
Jan 2000
Visiting researcher, School of Mechanical and Materials Engineering, University of Surrey
 

Education

 
Apr 1990
 - 
Sep 1995
Department of Aeronautics and Astronautics,, Division of Engineering, The University of Tokyo
 
Apr 1986
 - 
Mar 1990
Department of Aeronautics, Faculty of Engineering, The University of Tokyo
 

Committee Memberships

 
2011
 - 
2012
The Japan Society for Aeronautical and Space Sciences  
 
2011
 - 
2012
The society of Materials Science, Japan  
 
2011
 - 
2011
The Japan Society of Mechanical Engieers  
 
2011
 - 
2011
The Japan Society of Mechanical Engieers  
 
2011
 - 
2011
The Japan Society of Mechanical Engieers  
 
2010
 - 
2011
The Japan Society for Composite Materials  
 
2010
 - 
2011
The Japan Society for Composite Materials  
 
2010
 - 
2011
The Japan Society for Composite Materials  
 
2010
 - 
2011
The society of Materials Science, Japan  
 
2010
 - 
2011
The Japan Society of Mechanical Engieers  
 

Awards & Honors

 
Nov 2017
Numerical Simulation of process-induced deformation of carbon/epoxy composite laminates with interlayers, JISSE-15 Best Paper Award, SAMPE Japan
Winner: OGI Keiji, M. Tsutsumi, K. Mizukami, H. Matsutani & N. Sato
 
Apr 2015
Group Achievement Award, NASA Goddard Space Flight Center
Winner: The Astro-H Soft X-ray Telescope Team
 

Published Papers

 
Deformation Behavior during Partial Diameter-Enlarged Process at High Rotation Speeds
X. Zhu, OGI Keiji
Mechanical Engineering Journal,   1(1) 1-11   Jan 2019   [Refereed]
Experimental study on shear-dominant fiber failure in CFRP laminates by out-of-plane shear loading
YASHIRO Shigeki, OGI Keiji
Journal of Composite Materials      Oct 2018   [Refereed]
MONITORING OF CURE AND THERMAL SHRINKAGE IN INTERLAYER-TOUGHENED CFRP LAMINATES
OGI Keiji, MIZUKAMI Koichi, MATSUTANI Hiroaki and SATO Narumichi
Proceedings of 18th European Conference on Composite Materials      Jun 2018
Kazuyuki Nakahata, Keiji Ogi, Takeshi Namita, Katsumi Ohira, Masayuki Maruyama, Tsuyoshi Shiina
AIP Conference Proceedings   1949    Apr 2018   [Refereed]
© 2018 Author(s). Photoacoustic imaging comprises an optical excitation within a target zone and the detection of the ultrasonic wave so created. A pulsed laser illuminates the target zone, and this illumination causes rapid thermoelastic expansio...
OGI Keiji
Journal of Astronomical Telescopes, Instruments, and Systems   4(2) 021402-1-021402-13   Apr 2018   [Refereed]
Koichi Mizukami, Keiji Ogi
Advanced Composite Materials   27(2) 135-146   Mar 2018   [Refereed]
© 2017 Japan Society for Composite Materials, Korean Society for Composite Materials and Informa UK Limited, trading as Taylor & Francis Group. Fiber waviness is a process-induced defect that greatly decreases the compressive strength of carbon ...
Mitsuhiro Okayasu, Ryo Naito, Daisuke Fukuyama, Keiji Ogi
Journal of Composite Materials   52(4) 465-474   Feb 2018   [Refereed]
© 2017, © The Author(s) 2017. The effects of machined circular holes on the mechanical properties and failure characteristics of a unidirectional CFRP were investigated. Our approach was to change the location and the number of holes: (i) a two-se...
OGI Keiji
Journal of Astronomical Telescopes, Instruments, and Systems   4(1) 011210-1-011210-22   Jan 2018   [Refereed]
Effect of machining conditions on the trimming damage in composite laminates induced by out-of-plane shearing
OGI Keiji
Journal of Materials Processing Technology      2019   [Refereed]
Vacuum molding with local heating based on optimization of deformation and time
MATSUTANI Hiroaki, SATO Narumichi, OGI Keiji, MATSUZAKI Ryosuke
Proceedings of JISSE-15      Nov 2017
Numerical simulation of process-induced deformation of carbon/epoxy composite laminates with interlayers
OGI Keiji, TSUTSUMI Mitsuyoshi, MIZUKAMI Koichi, MATSUTANI Hiroaki, SATO Narumichi
Proceedings of JISSE-15      Nov 2017
Semi-viscoelastic FE analysis of process-induced deformation in a composite laminate
OGI Keiji
Proceedings of ICM&P 2017      Jun 2017   [Refereed]
MIZUKAMI Koichi, OGI Keiji
日本複合材料学会誌   43(3) 90‐96   May 2017   [Refereed]
Effects of machined circular holes on the mechanical properties of unidirectional carbon fiber-reinforced plastics
M. Okayasu, R. Naito, D. Fukuyama and OGI Keiji
Journal of Composite Materials      May 2017   [Refereed]
Experimental and Numerical Characterization of Low-Velocity Impact Damage of a CFRP Laminate with Interlayers
R. Othman, K. Ogi, K. Mizukami and S. Yashiro
35 29-35   Mar 2017   [Refereed]
Effect of Fiber Cutting Angle on The Fatigue Behavior of Open-Holed CFRP Laminates with Initially Cut Fibers
Sudarsono and K. Ogi
35 37-44   Mar 2017   [Refereed]
松田伸也, 黄木景二
日本機械学会論文集(Web)   83(847) ROMBUNNO.16‐00369(J‐STAGE)   Mar 2017   [Refereed]
MIZOKAMI Naoya, NAKAHATA Kazuyuki, OGI Keiji, TSUTSUMI Mitsuyoshi, MORI Ayaka, SAITOH Takahiro
JJSCE A2   73(2) I_115-I_124   2017   [Refereed]
Carbon fiber reinforced plastic (CFRP) is made of stacks of plies, each of which is reinforced by carbon fibers. Since the anisotropy due to the fiber orientation and lay-up of plies shows directional dependency of wave velocity, it is important t...
Fatigue Behavior of Open-Holed CFRP Laminates with Initially Cut Fibers
Sudarsono, OGI Keiji
Open Journal of Composite Materials   7(1) 49-62   2017   [Refereed]
43RD REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION   1806    2017   [Refereed]
Rozaini OTHMAN, Keiji OGI and Shigeki YASHIRO
Mechanical Engineering Journal   3(6)    Dec 2016   [Refereed]
尾崎良太郎, 川又達也, 山崎良介, 黄木景二, 門脇一則
日本複合材料学会誌   42(6) 228‐234-234   Nov 2016   [Refereed]
松田伸也, 黄木景二, 矢代茂樹
日本複合材料学会誌   42(1) 3-22   Jan 2016   [Refereed]
H. Matsumoto, H. Awaki, A. Furuzawa, M. Ishida, H. Kunieda, Y. Haba, T. Hayashi, R. Iizuka, K. Ishibashi, M. Itoh, T. Kosaka, Y. Maeda, I. Mitsuishi, T. Miyazawa, H. Mori, H. Nagano, Y. Namba, Y. Ogasaka, K. Ogi, T. Okajima, S. Sugita, Y. Suzuki, K. Tamura, Y. Tawara, K. Uesugi, S. Yamauchi
Proceedings of SPIE - The International Society for Optical Engineering   9905    Jan 2016
© 2016 SPIE.A ray-trace simulation code for the Hard X-ray Telescope (HXT) on board the Hitomi (ASTRO-H) satellite is being developed. The half power diameter and effective area simulated based on the code are consistent with ground measurements w...
S. Sugita et al.
ournal of Astronomical Telescopes, Instruments, and Systems   2(1) 014002-1-014002-8   Jan 2016   [Refereed]
Hisamitsu Awaki, Satoshi Sugita, Keiji Ogi, Kenya Yoshioka, Hironori Matsumoto, Ikuyuki Mitsuishi, Yuzuru Tawara
Proceedings of SPIE - The International Society for Optical Engineering   9905    Jan 2016   [Refereed]
© 2016 SPIE.We are developing an X-ray mirror using the CFRP as substrate in order to improve the angular resolution of tightlynested type X-ray telescope on board future X-ray satellites. We have fabricated Wolter-I designed monolithic CFRP mirro...
Hisamitsu Awaki, Hideyo Kunieda, Manabu Ishida, Hironori Matsumoto, Akihiro Furuzawa, Yoshito Haba, Takayuki Hayashi, Takayuki Hayashi, Ryo Iizuka, Kazunori Ishibashi, Masayuki Itoh, Tatsuro Kosaka, Yoshitomo Maeda, Ikuyuki Mitsuishi, Takuya Miyazawa, Hideyuki Mori, Hosei Nagano, Yoshiharu Namba, Yasushi Ogasaka, Keiji Ogi, Takashi Okajima, Satoshi Sugita, Yoshio Suzuki, Keisuke Tamura, Yuzuru Tawara, Kentaro Uesugi, Shigeo Yamauchi
Proceedings of SPIE - The International Society for Optical Engineering   9905    Jan 2016   [Refereed]
© 2016 SPIE.The Japanese X-ray Astronomy Satellite, Hitomi (ASTRO-H) carries hard X-ray imaging system, covering the energy band from 5 keV to 80 keV. The hard X-ray imaging system consists of two hard X-ray telescopes (HXT) and the focal plane de...
OZAKI Ryotaro, KAWAMATA Tatsuya, YAMASAKI Ryosuke, OGI Keiji, KADOWAKI Kazunori
Journal of the Japan Society for Composite Materials   42(6) 228-234   2016   [Refereed]
Resistance variation and Joule heating of carbon fiber reinforced plastic after applying a large electric current pulse are investigated. The current has a pulse width of several microseconds and the typical peak value is 2 kA. A double-digit decr...
Takahashi Tadayuki, Kokubun Motohide, Mitsuda Kazuhisa, Kelley Richard, Ohashi Takaya, Aharonian Felix, Akamatsu Hiroki, Akimoto Fumie, Allen Steve, Anabuki Naohisa, Angelini Lorella, Arnaud Keith, Asai Makoto, Audard Marc, Awaki Hisamitsu, Axelsson Magnus, Azzarello Philipp, Baluta Chris, Bamba Aya, Bando Nobutaka, Bautz Marshall, Bialas Thomas, Blandford Roger, Boyce Kevin, Brenneman Laura, Brown Greg, Bulbul Esra, Cackett Edward, Canavan Edgar, Chernyakova Maria, Chiao Meng, Coppi Paolo, Costantini Elisa, de Plaa Jelle, den Herder Jan-Willem, DiPirro Michael, Done Chris, Dotani Tadayasu, Doty John, Ebisawa Ken, Eckart Megan, Enoto Teruaki, Ezoe Yuichiro, Fabian Andrew, Ferrigno Carlo, Foster Adam, Fujimoto Ryuichi, Fukazawa Yasushi, Furuzawa Akihiro, Galeazzi Massimiliano, Gallo Luigi, Gandhi Poshak, Gilmore Kirk, Giustini Margherita, Goldwurm Andrea, Gu Liyi, Guainazzi Matteo, Haas Daniel, Haba Yoshito, Hagino Kouichi, Hamaguchi Kenji, Harayama Atsushi, Harrus Ilana, Hatsukade Isamu, Hayashi Takayuki, Hayashi Katsuhiro, Hayashida Kiyoshi, Hiraga Junko, Hirose Kazuyuki, Hornschemeier Ann, Hoshino Akio, Hughes John, Ichinohe Yuto, Iizuka Ryo, Inoue Yoshiyuki, Inoue Hajime, Ishibashi Kazunori, Ishida Manabu, Ishikawa Kumi, Ishimura Kosei, Ishisaki Yoshitaka, Itoh Masayuki, Iwata Naoko, Iyomoto Naoko, Jewell Chris, Kaastra Jelle, Kallman Timothy, Kamae Tuneyoshi, Kara Erin, Kataoka Jun, Katsuda Satoru, Katsuta Junichiro, Kawaharada Madoka, Kawai Nobuyuki, Kawano Taro, Kawasaki Shigeo, Khangulyan Dmitry, Kilbourne Caroline, Kimball Mark, King Ashley, Kitaguchi Takao, Kitamoto Shunji, Kitayama Tetsu, Kohmura Takayoshi, Kosaka Tatsuro, Koujelev Alex, Koyama Katsuji, Koyama Shu, Kretschmar Peter, Krimm Hans, Kubota Aya, Kunieda Hideyo, Laurent Philippe, Lebrun Francois, Lee Shiu-Hang, Leutenegger Maurice, Limousin Olivier, Loewenstein Michael, Long Knox, Lumb David, Madejski Grzegorz, Maeda Yoshitomo, Maier Daniel, Makishima Kazuo, Markevitch Maxim, Masters Candace, Matsumoto Hironori, Matsushita Kyoko, McCammon Dan, Mcguinness Daniel, McNamara Brian, Mehdipour Missagh, Miko Joseph, Miller Jon, Miller Eric, Mineshige Shin, Minesugi Kenji, Mitsuishi Ikuyuki, Miyazawa Takuya, Mizuno Tsunefumi, Mori Koji, Mori Hideyuki, Moroso Franco, Moseley Harvey, Muench Theodore, Mukai Koji, Murakami Hiroshi, Murakami Toshio, Mushotzky Richard, Nagano Housei, Nagino Ryo, Nakagawa Takao, Nakajima Hiroshi, Nakamori Takeshi, Nakano Toshio, Nakashima Shinya, Nakazawa Kazuhiro, Namba Yoshiharu, Natsukari Chikara, Nishioka Yusuke, Nobukawa Masayoshi, Nobukawa Kumiko, Noda Hirofumi, Nomachi Masaharu, O' Dell Steve, Odaka Hirokazu, Ogawa Hiroyuki, Ogawa Mina, Ogi Keiji, Ohno Masanori, Ohta Masayuki, Okajima Takashi, Okamoto Atsushi, Okazaki Tsuyoshi, Ota Naomi, Ozaki Masanobu, Paerels Frits, Paltani Stephane, Parmar Arvind, Petre Robert, Pinto Ciro, Pohl Martin, Pontius James, Porter F. Scott, Pottschmidt Katja, Ramsey Brian, Reynolds Christopher, Russell Helen, Safi-Harb Samar, Saito Shinya, Sakai Shin-ichiro, Sakai Kazuhiro, Sameshima Hiroaki, Sasaki Toru, Sato Goro, Sato Yoichi, Sato Kosuke, Sato Rie, Sawada Makoto, Schartel Norbert, Serlemitsos Peter, Seta Hiromi, Shibano Yasuko, Shida Maki, Shidatsu Megumi, Shimada Takanobu, Shinozaki Keisuke, Shirron Peter, Simionescu Aurora, Simmons Cynthia, Smith Randall, Sneiderman Gary, Soong Yang, Stawarz Lukasz, Sugawara Yasuharu, Sugita Hiroyuki, Sugita Satoshi, Szymkowiak Andrew, Tajima Hiroyasu, Takahashi Hiromitsu, Takeda Shin'ichiro, Takei Yoh, Tamagawa Toru, Tamura Takayuki, Tamura Keisuke, Tanaka Takaaki, Tanaka Yasuo, Tanaka Yasuyuki, Tashiro Makoto, Tawara Yuzuru, Terada Yukikatsu, Terashima Yuichi, Tombesi Francesco, Tomida Hiroshi, Tsuboi Yohko, Tsujimoto Masahiro, Tsunemi Hiroshi, Tsuru Takeshi, Uchida Hiroyuki, Uchiyama Yasunobu, Uchiyama Hideki, Ueda Yoshihiro, Ueda Shutaro, Ueno Shiro, Uno Shin'ichiro, Urry Meg, Ursino Eugenio, de Vries Cor, Wada Atsushi, Watanabe Shin, Watanabe Tomomi, Werner Norbert, Wik Daniel, Wilkins Dan, Williams Brian, Yamada Takahiro, Yamada Shinya, Yamaguchi Hiroya, Yamaoka Kazutaka, Yamasaki Noriko, Yamauchi Makoto, Yamauchi Shigeo, Yaqoob Tahir, Yatsu Yoichi, Yonetoku Daisuke, Yoshida Atsumasa, Yuasa Takayuki, Zhuravleva Irina, Zoghbi Abderahmen
SPACE TELESCOPES AND INSTRUMENTATION 2016: ULTRAVIOLET TO GAMMA RAY   9905    2016   [Refereed]
Sugita Satoshi, Awaki Hisamitsu, Kurihara Daichi, Yoshioka Kenya, Nomura Mizuki, Ogi Keiji, Tomita Yuuki, Mita Tomoki, Kunieda Hideyo, Matsumoto Hironori, Miyazawa Takuya, Mitsuishi Ikuyuki, Iwase Toshihiro, Maejima Masato, Shima Naoki, Ishikawa Takashi, Hamada Takayoshi, Ishida Naoki, Akiyama Hiromichi, Kishimoto Kazuaki, Utsunomiy Shin, Kamiyag Tomohiro
JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS   1(3)    Jul 2015   [Refereed]
Xia Zhu, Narumi Wada, Keiji Ogi, Hiroshi Kurosu, Manabu Takahashi, Hiromasa Senba
Key Engineering Materials   656-657 600-603   Jan 2015   [Refereed]
© (2015) Trans Tech Publications, Switzerland.Metal pipes have a long history as fluid conduits, and are commonly joined with components such as elbows to form bent transport paths. However, with the increasing demands for economy and energy savin...
Noriko Nakamura, Keiji Ogi, Atsushi Ota, Sho Nakata, Kenta Suma
Key Engineering Materials   656-657 347-352   Jan 2015   [Refereed]
© (2015) Trans Tech Publications, Switzerland.This paper presents shear cutting behaviors in thermosetting and thermoplastic CFRP laminates. Cross-ply laminates were fabricated from unidirectional thermosetting and thermoplastic CFRP prepregs for ...
Xia Zhu, Hironori Takahashi, Keiji Ogi, Manabu Takahashi, Nagatoshi Okabe
Key Engineering Materials   656-657 473-478   Jan 2015   [Refereed]
© (2015) Trans Tech Publications, Switzerland.We have proposed a new cold processing method to enlarge the diameter of a short section of a metal shaft using a combination of a cyclic bending load and an axial compressive load that is lower than t...
Shingo Ueshiba, Keiji Ogi, Yutaka Shigematsu, Kei Saito
Key Engineering Materials   656-657 185-190   Jan 2015   [Refereed]
© (2015) Trans Tech Publications, Switzerland.This paper presents experimental examples of machining damages resulting from a piercing process in CFRP laminates. A circular perforation was formed in CFRP cross-ply specimen with a punch jig using d...
Satoshi Sugita, Hisamitsu Awaki, Daichi Kurihara, Kenya Yoshioka, Mizuki Nomura, Keiji Ogi, Yuuki Tomita, Tomoki Mita, Hideyo Kunieda, Hironori Matsumoto, Takuya Miyazawa, Ikuyuki Mitsuishi, Toshihiro Iwase, Masato Maejima, Naoki Shima, Takashi Ishikawa, Takayoshi Hamada, Naoki Ishida, Hiromichi Akiyama, Kazuaki Kishimoto, Shin Utsunomiya, Tomohiro Kamiya
Journal of Astronomical Telescopes, Instruments, and Systems   1(3)    Jan 2015   [Refereed]
© The Authors.We study a lightweight x-ray mirror with a carbon fiber reinforced plastic (CFRP) substrate for next-generation x-ray satellites. For tightly nested x-ray mirrors, such as those on the Suzaku and ASTRO-H telescopes, CFRP is the suita...
Hisamitsu Awaki, Hideyo Kunieda, Manabu Ishida, Hironori Matsumoto, Yasunori Babazaki, Tadatsugu Demoto, Akihiro Furuzawa, Yoshito Haba, Takayuki Hayashi, Ryo Iizuka, Kazunori Ishibashi, Naoki Ishida, Masayuki Itoh, Toshihiro Iwase, Tatsuro Kosaka, Daichi Kurihara, Yuuji Kuroda, Yoshitomo Maeda, Yoshifumi Meshino, Ikuyuki Mitsuishi, Yuusuke Miyata, Takuya Miyazawa, Hideyuki Mori, Housei Nagano, Yoshiharu Namba, Yasushi Ogasaka, Keiji Ogi, Takashi Okajima, Shigetaka Saji, Fumiya Shimasaki, Takuro Sato, Toshiki Sato, Satoshi Sugita, Yoshio Suzuki, Kenji Tachibana, Sasagu Tachibana, Shunya Takizawa, Keisuke Tamura, Yuzuru Tawara, Tatsuharu Torii, Kentato Uesugi, Koujun Yamashita, Shigeo Yamauchi
Applied optics   53(32) 7664-7676   Nov 2014   [Refereed]
The new Japanese x-ray astronomy satellite, ASTRO-H, will carry two identical hard x-ray telescopes (HXTs), which cover the energy range of 5 to 80 keV. The HXT mirrors employ tightly nested, conically approximated thin-foil Wolter-I optics, and t...
Keiji Ogi, Yoshihiro Takao
Composites Technologies For 2020   914-919   Aug 2014
This paper presents monitoring the strain in carbon fiber reinforced plastic (CFRP) laminates and CFRP/concrete structures by means of pizeoresistance properties of CFRP. First, the piezoresistance behavior in a CFRP unidirectional laminate under ...
Shigeki Yashiro, Keiji Ogi, Akinori Yoshimura, Yoshihisa Sakaida
Composites Part A: Applied Science and Manufacturing   56 308-318   Jan 2014   [Refereed]
High-velocity impact damage in CFRP laminates was studied experimentally and numerically. Part I of this study observed and evaluated near-perforation damage in the laminates and characterized the damage pattern experimentally. Part II predicts th...
Tadayuki Takahashi, Kazuhisa Mitsuda, Richard Kelley, Felix Aharonian, Hiroki Akamatsu, Fumie Akimoto, Steve Allen, Naohisa Anabuki, Lorella Angelini, Keith Arnaud, Makoto Asai, Marc Audard, Hisamitsu Awaki, Philipp Azzarello, Chris Baluta, Aya Bamba, Nobutaka Bando, Marshall Bautz, Thomas Bialas, Roger D. Blandford, Kevin Boyce, Laura Brenneman, Gregory Brown, Ed Cackett, Edgar Canavan, Maria Chernyakova, Meng Chiao, Paolo Coppi, Elisa Costantini, Jelle De Plaa, Jan Willem Den Herder, Michael Dipirro, Chris Done, Tadayasu Dotani, John Doty, Ken Ebisawa, Teruaki Enoto, Yuichiro Ezoe, Andrew Fabian, Carlo Ferrigno, Adam Foster, Ryuichi Fujimoto, Yasushi Fukazawa, Stefan Funk, Akihiro Furuzawa, Massimiliano Galeazzi, Luigi Gallo, Poshak Gandhi, Kirk Gilmore, Matteo Guainazzi, Daniel Haas, Yoshito Haba, Kenji Hamaguchi, Atsushi Harayama, Isamu Hatsukade, Katsuhiro Hayashi, Takayuki Hayashi, Kiyoshi Hayashida, Junko Hiraga, Kazuyuki Hirose, Ann Hornschemeier, Akio Hoshino, John Hughes, Una Hwang, Ryo Iizuka, Yoshiyuki Inoue, Kazunori Ishibashi, Manabu Ishida, Kumi Ishikawa, Kosei Ishimura, Yoshitaka Ishisaki, Masayuki Itoh, Naoko Iwata, Naoko Iyomoto, Chris Jewell, Jelle Kaastra, Timothy Kallman, Tuneyoshi Kamae, Jun Kataoka, Satoru Katsuda, Junichiro Katsuta, Madoka Kawaharada, Nobuyuki Kawai, Taro Kawano, Shigeo Kawasaki, Dmitry Khangaluyan, Caroline Kilbourne, Mark Kimball, Masashi Kimura, Shunji Kitamoto, Tetsu Kitayama, Takayoshi Kohmura, Motohide Kokubun, Saori Konami, Tatsuro Kosaka, Alexander Koujelev, Katsuji Koyama, Hans Krimm, Aya Kubota, Hideyo Kunieda
Proceedings of SPIE - The International Society for Optical Engineering   9144    Jan 2014   [Refereed]
© 2014 SPIE.The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions developed by the Institute of Space and Astronautical Science (ISAS), with a planned launch in 2015. The ASTRO-H mission is equipped with ...
Satoshi Sugita, Hisamitsu Awaki, Daichi Kurihara, Kenya Yoshioka, Yuuki Tomita, Keiji Ogi, Hideyo Kunieda, Hironori Matsumoto, Takuya Miyazawa, Toshihiro Iwase, Tatsuya Hibino, Takashi Ishikawa, Takayoshi Hamada, Naoki Ishida, Hiromichi Akiyama, Kazuaki Kishimoto, Shin Utsunomiya, Tomohiro Kamiya
Proceedings of SPIE - The International Society for Optical Engineering   9144    Jan 2014   [Refereed]
© 2014 SPIE.We study lightweight X-ray mirror with Carbon Fiber Reinforced Plastic (CFRP) substrate for next generation X-ray satellites. CFRP is suitable material as substrate for tightly nested X-ray mirrors like telescope of Suzaku, ASTRO-H bec...
Shigeki Yashiro, Ryuji Ono, Keiji Ogi, Yoshihisa Sakaida
Proceedings of the American Society for Composites - 29th Technical Conference, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting      Jan 2014
This study experimentally and numerically investigates mechanism of shear-cutting for CFRP cross-ply laminates. Cross-ply laminates were cut in a wide range of clearance, which was the distance between the upper tool and the lower tool. Shearing z...
Hisamitsu Awaki, Hideyo Kunieda, Akihiro Furuzawa, Yoshito Haba, Takayuki Hayashi, Ryo Iizuka, Kazunori Ishibashi, Manabu Ishida, Masayuki Itoh, Tatsuro Kosaka, Yoshitomo Maeda, Hironori Matsumoto, Takuya Miyazawa, Hideyuki Mori, Hosei Nagano, Yoshiharu Namba, Yasushi Ogasaka, Keiji Ogi, Takashi Okajima, Satoshi Sugita, Yoshio Suzuki, Keisuke Tamura, Yuzuru Tawara, Kentaro Uesugi, Koujun Yamashita, Shigeo Yamauchi
Proceedings of SPIE - The International Society for Optical Engineering   9144    Jan 2014   [Refereed]
© 2014 SPIE.The new Japanese X-ray Astronomy satellite, ASTRO-H will carry two identical hard X-ray telescopes (HXTs), which cover 5 to 80 keV, in order to provide new insights into frontier of X-ray astronomy. The HXT mirror surfaces are coated w...
Hisamitsu Awaki, Hideyo Kunieda, Manabu Ishida, Hironori Matsumoto, Yasunori Babazaki, Tadatsugu Demoto, Akihiro Furuzawa, Yoshito Haba, Takayuki Hayashi, Ryo Iizuka, Kazunori Ishibashi, Naoki Ishida, Masayuki Itoh, Toshihiro Iwase, Tatsuro Kosaka, Daichi Kurihara, Yuuji Kuroda, Yoshitomo Maeda, Yoshifumi Meshino, Ikuyuki Mitsuishi, Yuusuke Miyata, Takuya Miyazawa, Hideyuki Mori, Housei Nagano, Yoshiharu Namba, Yasushi Ogasaka, Keiji Ogi, Takashi Okajima, Shigetaka Saji, Fumiya Shimasaki, Takuro Sato, Takuro Sato, Toshiki Sato, Toshiki Sato, Satoshi Sugita, Yoshio Suzuki, Kenji Tachibana, Sasagu Tachibana, Shunya Takizawa, Keisuke Tamura, Yuzuru Tawara, Tatsuharu Torii, Kentato Uesugi, Koujun Yamashita, Shigeo Yamauchi
Applied Optics   53 7664-7676   Jan 2014
© 2014 Optical Society of America. The new Japanese x-ray astronomy satellite, ASTRO-H, will carry two identical hard x-ray telescopes (HXTs), which cover the energy range of 5 to 80 keV. The HXT mirrors employ tightly nested, conically approximat...
Fatigue damage in diameter-enlargement part formed by cyclic bending and axial compressive Loading
X. Zhu, K. Ogi, M. Takahashi, N. Okabe and H. Takahashi
Procedia Materials Science   3 1499-1504   2014   [Refereed]
X. Zhu, K. Ogi, M. Takahashi, N. Okabe and K. Mori
Applied Mechanics and Materials   473 35-38   2014   [Refereed]
X. Zhu, K. Ogi, M. Takahashi, K. Mori and N. Okabe
Applied Mechanics and Materials   473 30-34   2014   [Refereed]
Zhu Xia, Hosokawa Kenichiroh, Ogi Keiji, Takahashi Manabu, Okabe Nagatoshi
20TH EUROPEAN CONFERENCE ON FRACTURE   3 1499-1504   2014   [Refereed]
M. Takahashi, S. Yashiro, K. Ogi, N. Okabe
Procedia Materials Science   3 83-89   2014   [Refereed]
M. Okayasu, T. Yamazaki, K. Ohta, K. Ogi and T. Shiraishi
International Journal of Fatigue   55 257-267   Oct 2013   [Refereed]
Shinya Matsuda, Keiji Ogi
Polymer Engineering and Science   53(9) 1920-1926   Sep 2013   [Refereed]
This article presents a stochastic approach to predict fatigue crack propagation (FCP) diagrams of continuous crack growth (CCG) and discontinuous crack growth (DCG) in polycarbonate (PC) under cyclic loading. First, it is assumed that the macrosc...
Shinya Matsuda, Keiji Ogi
Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   79 749-753   Jul 2013
This paper presents residual strength properties of monolithic ceramics after static loading. First, a residual strength prediction model is proposed on the basis of the slow crack growth (SCG) concept. Second, the residual strengths in soda glass...
YASHIRO S, OGI K
Composites Part A   48 93-100   May 2013   [Refereed]
黄木景二, 岡英志
材料システム   311 25-29   Mar 2013   [Refereed]
K. Ogi, J.-W. Kim,K. Ono and N. Uda
Advanced Composite Materials   22(1) 29-47   Feb 2013   [Refereed]
MATSUDA Shinya, OGI Keiji
journal of the Japan Society for Testing Materials   62(9) 569-574   2013
This paper presents time-temperature parameter (TTP) methods for predicting the slow crack growth (SCG)-type creep rupture life in ceramics. First, a probabilistic delayed-fracture (PDF) model was proposed on the basis of the Arrhenius-type SCG co...
Tadayuki Takahashi, Kazuhisa Mitsuda, Richard Kelley, Henri Aarts, Felix Aharonian, Hiroki Akamatsu, Fumie Akimotoe, Steve Allen, Naohisa Anabuki, Lorella Angelini, Keith Arnaud, Makoto Asai, Marc Audard, Hisamitsu Awaki, Philipp Azzarello, Chris Baluta, Aya Bamba, Nobutaka Bando, Mark Bautz, Roger Blandford, Kevin Boyce, Greg Brown, Ed Cackett, Maria Chernyakova, Paolo Coppi, Elisa Costantini, Jelle De Plaa, Jan Willem Den Herder, Michael DiPirro, Chris Done, Tadayasu Dotani, John Doty, Ken Ebisawa, Megan Eckart, Teruaki Enoto, Yuichiro Ezoe, Andrew Fabian, Carlo Ferrigno, Adam Foster, Ryuichi Fujimoto, Yasushi Fukazawa, Stefan Funk, Akihiro Furuzawa, Massimiliano Galeazzi, Luigi Gallo, Poshak Gandhi, Keith Gendreau, Kirk Gilmore, Daniel Haas, Yoshito Haba, Kenji Hamaguchi, Isamu Hatsukade, Takayuki Hayashi, Kiyoshi Hayashida, Junko Hiraga, Kazuyuki Hirose, Ann Hornschemeier, Akio Hoshino, John Hughes, Una Hwang, Ryo Iizuka, Yoshiyuki Inoue, Kazunori Ishibashi, Manabu Ishida, Kosei Ishimura, Yoshitaka Ishisaki, Masayuki Ito, Naoko Iwat, Naoko Iyomoto, Jelle Kaastr, Timothy Kallman, Tuneyoshi Kamae, Jun Kataoka, Satoru Katsuda, Hajime Kawahara, Madoka Kawaharada, Nobuyuki Kawai, Shigeo Kawasaki, Dmitry Khangaluyan, Caroline Kilbourne, Masashi Kimura, Kenzo Kinugasaa, Shunji Kitamoto, Tetsu Kitayama, Takayoshi Kohmura, Motohide Kokubun, Tatsuro Kosaka, Alex Koujelev, Katsuji Koyama, Hans Krimm, Aya Kubota, Hideyo Kunieda, Stephanie LaMass, Philippe Laurent, Francois Lebrun, Maurice Leutenegger, Olivier Limousin, Michael Loewenstein, Knox Long, David Lumb
Proceedings of SPIE - The International Society for Optical Engineering   8443    Dec 2012
The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions initiated by the Institute of Space and Astronautical Science (ISAS). ASTRO-H will investigate the physics of the highenergy universe via a suite of f...
Takahiro Yoshimura, Tatsuro Kosaka, Hisamitsu Awaki, Keiji Ogi, Manabu Ishid, Yoshitomo Maeda, Akihiro Furuzawa, Takuya Miyazawa, Nobuyuki Yamane, Hiroyoshi Kato, Hideyo Kunieda
Proceedings of SPIE - The International Society for Optical Engineering   8443    Dec 2012   [Refereed]
ASTRO-H is a next version of Japanese X-ray astronomy satellite for lunch in 2014. The hard X-ray telescope (HXT) on board the satellite has a cylindrical mirror housing which contains reflection circular mirror foils. In the present paper, vibrat...
Hisamitsu Awaka, Hideyo Kunieda, Akihiro Furuzawa, Yoshito Haba, Takayuki Hayashi, Ryo Iizuka, Kazunori Ishibashi, Manabu Ishida, Masayuki Itoh, Tatsuro Kosaka, Yoshitomo Maeda, Hironori Matsumoto, Takuya Miyazawa, Hideyuki Mori, Hosei Nagano, Yoshiharu Namba, Yasushi Ogasaka, Keiji Ogi, Takashi Okajima, Satoshi Sugita, Yoshio Suzuki, Keisuke Tamura, Yuzuru Tawara, Kentato Uesugi, Koujun Yamashita, Shigeo Yamauchi
Proceedings of SPIE - The International Society for Optical Engineering   8443    Dec 2012   [Refereed]
ASTRO-H is an international X-ray mission of ISAS/JAXA, which will be launched in 2014. One of the main characteristics of ASTRO-H is imaging spectroscopy in the hard X-ray band above 10 keV. ASTRO-H will carry two identical Hard X-ray telescopes ...
Keiji Ogi, Tetsuro Shiraishi
Zairyo/Journal of the Society of Materials Science, Japan   61 719-723   Aug 2012
This paper presents the Paris law for discontinuous crack growth (DCG) and continuous crack growth (CCG) in polycarbonate under cyclic loading. First, the length and height of the craze zone near the crack tip were expressed on the basis of fractu...
Shinya Matsuda, Keiji Ogi
Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   78(790) 912-922   Jul 2012
This paper presents a probabilistic model for predicting the constant fatigue life (CFL) diagrams for ceramics. First, a unified probabilistic delayed-fracture (PDF) model was proposed on the basis of the slow crack growth (SCG) concept in conjunc...
Shigeki Yashiro, Keiji Ogi, Masashi Oshita
Composites Part B: Engineering   43(3) 1353-1362   Apr 2012   [Refereed]
This study investigates characteristics of foreign-object damage in plain-woven SiC/SiC composites after thermal loading. High-speed impact tests were conducted on virgin specimens, thermally exposed specimens, and thermally shocked specimens, in ...
Nobuhiro Settsu, Manabu Takahashi, Masafumi Matsushita, Keiji Ogi, Mitsuyoshi Tsutsumi
Zairyo/Journal of the Society of Materials Science, Japan   61 292-298   Mar 2012
The effects of thermal loading conditions on the mechanical properties of S45C/Cu/Si 3N 4 composites with brazing filler metals of AgCu and AgCuTi are described. Thermal loading tests were conducted on test samples under various heat conditions, a...
SETTSU Nobuhiro, TAKAHASHI Manabu, MATSUSHITA Masafumi, OGI Keiji, TSUTSUMI Mitsuyoshi
journal of the Japan Society for Testing Materials   61(3) 292-298   2012
The effects of thermal loading conditions on the mechanical properties of S45C/Cu/Si<font size="-1">3</font>N<font size="-1">4</font> composites with brazing filler metals of AgCu and AgCuTi are described. Thermal loading te...
X. Zhu, N. Okabe, K. Ogi, and M. Takahashi
Applied Mechanics and Materials   217-219 2346-2350   2012   [Refereed]
Shinya Matsuda, Keiji Ogi, Manabu Takahashi, Takushi Onoue
Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   77 126-133   Dec 2011
This paper aims at quantitative evaluation of residual strength after thermal shock in ceramics. First, a model predicting the residual strength from Young's modulus or crack density after thermal shock was established using a fracture mechanics a...
E. Oka, K. Ogi, A. Yoshimura, T. Okabe
ICCM International Conferences on Composite Materials      Dec 2011
OGI Keiji, TANAKA Takaaki
Journal of the Japan Society for Composite Materials   37(6) 226-233   Nov 2011
This paper presents electrical resistance change due to moisture in a CFRP cross-ply laminate with and without matrix cracking. First, the electrical resistance change was measured for wet unidirectional and cross-ply laminates at room temperature...
OGI K, YAMANOUCHI M
SpringerApplied Composite Materials   18(10) 397-408   Oct 2011   [Refereed]
OGI K, TAKAHASHI M, YASHIRO S
Polymer Composites   32(10) 1652-1660   Oct 2011   [Refereed]
Probabilistic fatigue limit diagram for ceramics
MATSUDA S, OGI K
Proc. International Conference on Advanced Technology in Experimental Mechanics 2011      Sep 2011
John Wiley & Sons, Inc.Fatigue & Fracture of Engineering Materials & Structures   34(9) 643-653   2011   [Refereed]
OGI K
Japan Society for Mechanical EngineersJournal of Solid Mechanics and Materials Engineering   5(2) 64-74   2011   [Refereed]
Influences of Fluid Properties on Stress Relaxation Behaviors of a Liver
Materials system   29 47-52   2011
OGI Keiji, TANAKA Takaaki, YASHIRO Shigeki, YOSHIMURA Akinori
journal of the Japan Society for Testing Materials   60(5) 418-424   2011
This paper aims at characterizing the high-velocity impact damage behavior in carbon fiber reinforced plastic (CFRP) unidirectional (UD) and cross-ply (CP) laminates. First, the surface and internal damages of CFRP plates impacted at a velocity of...
MATSUDA Shinya, OGI Keiji, WATANABE Ryosuke
journal of the Japan Society for Testing Materials   60(5) 477-481   2011
This paper presents a theoretical approach for estimating the fracture strength of brittle materials under variable loads. First, a model was established on the basis of the slow crack growth concept in conjunction with two-parameter Weibull distr...
X. Zhu, Y. Kuwahara, N. Okabe, K. Ogi, F. Ikuta
Proceedings of SPIE - The International Society for Optical Engineering   7522    Dec 2010
This paper investigates fatigue strength and existence of mechanical damage experimentally and analytically. In particular, first, we carry out rotary bending fatigue tests and investigate fatigue strength for smooth specimens and specimen process...
K. Ogi, S. Yashiro, A. Yoshimura
25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010   2 1388-1400   Dec 2010
This paper aims at characterizing the effect of impact velocity on high-speed impact damage behavior in carbon fiber reinforced plastic (CFRP) unidirectional (UD) and cross-ply (CP) laminates. First, The surface and internal damages of CFRP plates...
Keitaro Ito, Keiji Ogi, Hisamitsu Awaki, Tatsuro Kosaka, Yasufumi Yamamoto
Proceedings of SPIE - The International Society for Optical Engineering   7732    Oct 2010   [Refereed]
The thin film technology called "depth-graded multi-layer" is used to manufacture reflector foils, which are inserted in a hard X-ray telescope. When the temperature of the foil changes from the temperature at which the foil was produced; thermal ...
Tatsuro Kosaka, Takeyuki Igarashi, Hisamitsu Awaki, Keiji Ogi, Keitaro Itoh, Yoshitomo Maeda, Manabu Ichida, Akihiro Furuzawa, Takuya Miyazawa, Hideyo Kunieda
Proceedings of SPIE - The International Society for Optical Engineering   7732    Oct 2010   [Refereed]
ASTRO-H is the new Japanese X-ray astronomy satellite for launch in 2013. HXT on board the satellite has a mirror housing which is a cylindrical case and contains reflection mirror foils, which are constrained by alignment bars. In order to invest...
Hideyo Kunieda, Hisamitsu Awaki, Akihiro Furuzawa, Yoshito Haba, Ryo Iizuka, Kazunori Ishibashi, Manabu Ishida, Masayuki Itoh, Tatsuro Kosaka, Yoshitomo Maeda, Hironori Matsumoto, Takuya Miyazawa, Hideyuki Mori, Yoshiharu Namba, Yasushi Ogasaka, Yasushi Ogasaka, Keiji Ogi, Takashi Okajima, Takashi Okajima, Yoshio Suzuki, Keisuke Tamura, Yuzuru Tawara, Kentato Uesugi, Koujun Yamashita, Koujun Yamashita, Shigeo Yamauchi
Proceedings of SPIE - The International Society for Optical Engineering   7732    Oct 2010   [Refereed]
The new Japanese X-ray Astronomy satellite, ASTRO-H will carry two identical hard X-ray telescopes (HXTs), which cover 5 to 80 keV. The HXT mirrors employ tightly-nested, conically-approximated thin-foil Wolter-I optics, and the mirror surfaces ar...
Manabu Takahashi, Keiji Ogi, Daisuke Tanaka
Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   76 625-630   May 2010
Effects of loading rate on damage behavior in a pig liver loaded in compression were experimentally investigated. First, we developed a macroscopic damage model of liver cells or hepatocytes. Next, microscopic damage mechanism at the cell level wa...
KUWAHARA Yoshitaka, OKABE Nagatoshi, ZHU Xia, OGI Keiji, IKUTA Fumiaki, MURAKAMI Soshi
Journal of the JSTP   51(591) 331-335   Apr 2010
We have recently developed a novel processing method for enlarging the diameter of a hollow shaft locally through the combination of cyclic torsional load with axial compressive load. First, experiments were conducted under various processing cond...
OGI Keiji, OKABE Tomonaga, TAKAHASHI Manabu, YASHIRO Shigeki, YOSHIMURA Akinori, OGASAWARA Toshio
ElsevierComposites A   41(4) 489-498   Apr 2010   [Refereed]
OGI Keiji, YASHIRO Shigeki, NIIMI Koji
ElsevierComposites A   41(3) 383-390   Mar 2010   [Refereed]
K. Ogi, S. Yashiro, M. Takahashi, A. Yoshimura
7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010   1 261-264   Jan 2010
This paper aims at characterizing the high-speed impact damage behavior in CFRP unidirectional (UD) and cross-ply (CP) laminates. First, high-speed (~ 400 m/s) impact damage was introduced by collision of a flying steel sphere (projectile) to CFRP...
YASHIRO S., OGI K., YAMAMOTO T., WATANABE T.
BrillAdvanced Composite Materials   19(3) 243-259   2010   [Refereed]
OGI Keiji, OGIHARA Shinji, SHIGEKI Yashiro
Japan Society for Composite Materials/Korean Society for Composite MaterialsAdvanced Composite Materials   19(1) 1-17   2010   [Refereed]
Takahashi Tadayuki, Mitsuda Kazuhisa, Kelley Richard, Aharonian Felix, Akimoto Fumie, Allen Steve, Anabuki Naohisa, Angelini Lorella, Arnaud Keith, Awaki Hisamitsu, Bamba Aya, Bando Nobutaka, Bautz Mark, Blandford Roger, Boyce Kevin, Brown Greg, Chernyakova Maria, Coppi Paolo, Costantini Elisa, Cottam Jean, Crow John, de Plaa Jelle, de Vries Cor, den Herder Jan-Willem, DiPirro Michael, Done Chris, Dotani Tadayasu, Ebisawa Ken, Enoto Teruaki, Ezoe Yuichiro, Fabian Andrew, Fujimoto Ryuichi, Fukazawa Yasushi, Funk Stefan, Furuzawa Akihiro, Galeazzi Massimiliano, Gandhi Poshak, Gendreau Keith, Gilmore Kirk, Haba Yoshito, Hamaguchi Kenji, Hatsukade Isamu, Hayashida Kiyoshi, Hiraga J., Hirose Kazuyuki, Hornschemeier Ann, Hughes John, Hwang Una, Iizuka Ryo, Ishibashi Kazunori, Ishida Manabu, Ishimura Kosei, Ishisaki Yoshitaka, Isobe Naoki, Ito Masayuki, Iwata Naoko, Kaastra Jelle, Kallman Timothy, Kamae Tuneyoshi, Katagiri Hideaki, Kataoka Jun, Katsuda Satoru, Kawaharada Madoka, Kawai Nobuyuki, Kawasaki Shigeo, Khangaluyan Dmitry, Kilbourne Caroline, Kinugasa Kenzo, Kitamoto Shunji, Kitayama Tetsu, Kohmura Takayoshi, Kokubun Motohide, Kosaka Tatsuro, Kotani Taro, Koyama Katsuji, Kubota Aya, Kunieda Hideyo, Laurent Philippe, Lebrun Francois, Limousin Olivier, Loewenstein Michael, Long Knox, Madejski Grzegorz, Maeda Yoshitomo, Makishima Kazuo, Markevitch Maxim, Matsumoto Hironori, Matsushita Kyoko, McCammon Dan, Miller Jon, Mineshige Shin, Minesugi Kenji, Miyazawa Takuya, Mizuno Tsunefumi, Mori Koji, Mori Hideyuki, Mukai Koji, Murakami Hiroshi, Murakami Toshio, Mushotzky Richard, Nakagawa Yujin, Nakagawa Takao, Nakajima Hiroshi, Nakamori Takeshi, Nakazawa Kazuhiro, Namba Yoshiharu, Nomachi Masaharu, Dell Steve O', Ogawa Hiroyuki, Ogawa Mina, Ogi Keiji, Ohashi Takaya, Ohno Masanori, Ohta Masayuki, Okajima Takashi, Ota Naomi, Ozaki Masanobu, Paerels Frits, Paltani Stephane, Parmer Arvind, Petre Robert, Pohl Martin, Porter Scott, Ramsey Brian, Reynolds Christopher, Sakai Shin-ichiro, Sambruna Rita, Sato Goro, Sato Yoichi, Serlemitsos Peter, Shida Maki, Shimada Takanobu, Shinozaki Keisuke, Shirron Peter, Smith Randall, Sneiderman Gary, Soong Yang, Stawarz Lukasz, Sugita Hiroyuki, Szymkowiak Andrew, Tajima Hiroyasu, Takahashi Hiromitsu, Takei Yoh, Tamagawa Toru, Tamura Takayuki, Tamura Keisuke, Tanaka Takaaki, Tanaka Yasuo, Tanaka Yasuyuki, Tashiro Makoto, Tawara Yuzuru, Terada Yukikatsu, Terashima Yuichi, Tombesi Francesco, Tomida Hiroshi, Tozuka Miyako, Tsuboi Yoko, Tsujimoto Masahiro, Tsunemi Hiroshi, Tsuru Takeshi, Uchida Hiroyuki, Uchiyama Yasunobu, Uchiyama Hideki, Ueda Yoshihiro, Uno Shinichiro, Urry Meg, Watanabe Shin, White Nicholas, Yamada Takahiro, Yamaguchi Hiroya, Yamaoka Kazutaka, Yamasaki Noriko, Yamauchi Makoto, Yamauchi Shigeo, Yatsu Yoichi, Yonetoku Daisuke, Yoshida Atsumasa
SPACE TELESCOPES AND INSTRUMENTATION 2010: ULTRAVIOLET TO GAMMA RAY   7732    2010   [Refereed]
N. Settsu, M. Takahashi, N. Okabe, K. Ogi, X. Zhu
12th International Conference on Fracture 2009, ICF-12   8 6069-6078   Dec 2009
The strength reliability of the ceramics/metal joints in the vacuum interrupters was studied focusing on the thermal stress around the ceramics/metal joints due to mismatch of thermal expansion coefficients between ceramics and metal. It was found...
A. Yoshimura, K. Ogi, T. Ogasawara, H. Sasaki, K. Miyoshi
ICCM International Conferences on Composite Materials      Dec 2009
This paper proposes a numerical model that simulates the high velocity impact damage in the CFRP. Fiber failure, ply cracks, and delamination are modelled by stress criterion, continuum damage mechanics, and cohesive zone model. Experimental and s...
K. Ogi, S. Yashiro, T. Okabe, A. Yoshimura, T. Ogasawara
ICCM International Conferences on Composite Materials      Dec 2009
The high speed impact damage in CFRP laminates was experimentally and numerically investigated. The impact damages were observed using optical and X-Ray CT microscopy. The dynamic finite element analysis was performed to simulate the damage proces...
Hisamitsu Awaki, Yasushi Ogasaka, Hideyo Kunieda, Akihiro Furuzawa, Hideyuki Mori, Takuya Miyazawa, Yoshito Haba, Yuzuru Tawara, Koujyun Yamashita, Peter Serlemitsos, Yang Soong, Takashi Okajima, Manabu Ishida, Yoshitomo Maeda, Keisuke Tamura, Yoshiharu Namba, Kentaro Uesugi, Yoshio Suzuki, Keiji Ogi, Masayuki Itoh, Tatsuro Kosaka, Hiroshi Tsunemi
Proceedings of SPIE - The International Society for Optical Engineering   7437    Nov 2009   [Refereed]
Astro-H mission is the new Japanese X-ray mission following Suzaku. One of the unique features of the mission is an imaging spectroscopy in a unprecedentedly wide energy region from 0.3 to 60 keV. The X-Ray Telescope (XRT) system covers the energy...
OGI Keiji, YASHIRO Shigeki, TAKAHASHI Manabu, OGIHARA Shinji
ElsevierComposites Science and Technology   69(3-4) 469-476   Mar 2009   [Refereed]
堤三佳, 黄木景二, 岡部永年, 生宗健治
材料システム   27 35-41   Feb 2009   [Refereed]
YASHIRO S, OGI K
ElsevierComposites A   40(6-7) 938-947   2009   [Refereed]
Fracture properties model analysis of porus ceramics
27 35-41   2009
西崎泰典, 桑原義孝, ZHU Xia, 岡部永年, 黄木景二, 生田文明
破壊力学シンポジウム講演論文集   14th 161-162   2009
Keiji Ogi, Shigeki Yashiro, Shinji Ogihara
Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008   164-167   Dec 2008
This paper describes a delayed fracture model for transverse cracking in CFRP cross-ply laminates under creep loading on the basis of the slow crack growth (SCG) concept. First, an SCG-based fracture model for a crack in a brittle material was est...
Hisamitsu Awaki, Keiji Ogi, Takashi Okajima, Peter J. Serlemitsos, Yang Soong, Kai Wing Chan, Yasushi Ogasaka, Takuya Miyazawa, Akihiro Furuzawa, Hideyo Kunieda, Yuzuru Tawara, Manabu Ishida, Yoshitomo Maeda, Hideyuki Mori, Kensuke Tamura
Proceedings of SPIE - The International Society for Optical Engineering   7011    Dec 2008   [Refereed]
We present a study on housing design for the X-ray telescopes (XRT) onboard the New Exploration X-ray Telescope (NeXT). The NeXT XRTs are larger than previous thin-foil XRTs. The XRT is required to have a sufficient stiffness in order to keep the ...

Misc

 
宇田暢秀, 石川隆司, 西やぶ和明, 青木義男, NI Q‐Q, 河井昌道, 黄木景二, 中田政之, 荻原慎二
日本複合材料学会誌   30(2) 79-88   Mar 2004   [Invited]

Books etc

 
4. Dynamic Deformation, Damage and Fracture in Composite Materials and Structures
edited by V. Silbershmidt (Part:Contributor, Chap. 7)
Woodhead Publishing   Jan 2016   

Conference Activities & Talks

 
In-situ monitoring of internal strain of CFRP laminate from processing to machining
OGI Keiji
The 11th Asian-Australasian Conference on Composite Materials   31 Jul 2018   
MICROSCOPIC IMPACT DAMAGE MECHANISMS OF CFRP LAMINATES WITH TOUGHENED INTERLAYERS SUBJECTED TO HIGH-VELOCITY IMPACT
OGI Keiji
The 11th Asian-Australasian Conference on Composite Materials   31 Jul 2018   
Fatigue Behavior of Non-Holed CFRP Laminates with Initially Cut Fibers
OGI Keiji
The 11th Asian-Australasian Conference on Composite Materials   31 Jul 2018   
ELECTRO-CONDUCTIVITY IN THE THICKNESS DIRECTION OF A UNIDIRECTIONAL CFRP LAMINATE WITH INTERLAYERS
OGI Keiji
The 11th Asian-Australasian Conference on Composite Materials   30 Jul 2018   
MONITORING OF CURE AND THERMAL SHRINKAGE IN INTERLAYER-TOUGHENED CFRP LAMINATES
OGI Keiji
18th European Conference on Composite Materials   25 Jun 2018   
Modeling unidirectionally arrayed chopped strands with angled slits using extended finite element method
YASHIRO Shigeki, OGI Keiji, NISHIKAWA Masaaki
5 Mar 2018   
In-situ monitoring of strain due to temperature change and damage around a drilled hole
Nasrullah Baso, OGI Keiji
JCCM-9   28 Feb 2018   
Open-Hole Compressive Strength and Fracture Morphology of a CFRP laminate after Piercing Process by Punch Press
OGI Keiji
15 Dec 2017   
Vacuum molding with local heating based on optimization of deformation and time
H. Matsutani, N. Sato, K. Ogi, R. Matsuzaki
15TH JAPAN INTERNATIONAL SAMPE SYMPOSIUM AND EXHIBITION   27 Nov 2017   
NUMERICAL SIMULATION OF PROCESS-INDUCED DEFORMATION OF CARBON/EPOXY COMPOSITE LAMINATES WITH INTERLAYERS
OGI Keiji, Mitsuyoshi Tsutsumi, Koichi Mizukami, Hiraoki Matsutani, Narumichi Sato
15TH JAPAN INTERNATIONAL SAMPE SYMPOSIUM AND EXHIBITION   27 Nov 2017   
Photoacoustic Microscopic Imaging of Surface and Subsurface Damage in CFRP
K. Nakahata, K. Ogi, T. Namita, K. Ohira, M. Naruyama and T. Shiina
QNDE Conference 2017   15 Jun 2017   
Semi-viscoelastic FE analysis of process-induced deformation in a composite laminate
OGI Keiji
ICM&P 2017   6 Jun 2017   
矢代 茂樹, 黄木 景二
日本航空宇宙学会西部支部講演会講演集   2017   
ICHINOSE Kaori, YASHIRO Shigeki, OGI Keiji
The Proceedings of Conference of Tokai Branch   2017   
村松星彦, 松田伸也, 矢代茂樹, 黄木景二
日本材料学会東海支部学術講演会講演論文集   2017   
HAYASHI Takahiro, OGI Keiji, MATSUTANI Hiroaki, SATO Narumichi
The Proceedings of the Materials and processing conference   26 Nov 2016   
MITA Tomoki, OGI Keji, MATSUTANI Hiroaki, SATO Narumichi
The Proceedings of the Materials and processing conference   26 Nov 2016   
MURAKAMI Kensuke, OGI Keiji
The Proceedings of the Materials and processing conference   26 Nov 2016   
中川知哉, 黄木景二, 尾崎良太郎, 門脇一則
FRP CON-EX講演要旨集   21 Nov 2016   
Effect of Slit Pattern on The Fatigue Behavior of Open-holed UACS CFRP Laminates
Sudarsono and Keiji Ogi
The 10th Asina-Australasian Conference on Composite Materials (ACCM-10)   18 Oct 2016   
Viscoelastic Simulation of Processinduced Residual Stress in Carbon/Epoxy Composites
OGI Keiji, Matsutani Hiroaki, Taketa Ichiro
The 10th Asina-Australasian Conference on Composite Materials (ACCM-10)   18 Oct 2016   
Low-velocity Impact Damage Behaviour of a CFRP Laminate Toughened with Interleaf Layers
Rozaini Othman, Keiji Ogi, Shigeki Yashiro
The 10th Asina-Australasian Conference on Composite Materials (ACCM-10)   17 Oct 2016   
Compressive Strength and Fractography of CFRP Laminates after Piercing Process by Punch Press
Hoshihiko Muramatsu, Shinya Matsuda, Shigeki Yashiro and Keiji Ogi
Proceedings of APCFS 2016   20 Sep 2016   
Microscopic Evaluation of CFRP Laminates
FUJI Risa, OGI Keiji
RSC Tokyo International Conference 2016   8 Sep 2016   
Numerical Simulation of Ultrasonic Wave Propagateion in FRP using Image-based Modeling
N. Mizokami, K. Nakahata, K. Ogi, H.Yamawaki and M.Shiwa
QNDE2016   19 Jul 2016   
松田伸也, 村松星彦, 矢代茂樹, 黄木景二
日本材料学会東海支部学術講演会講演論文集   9 Mar 2016   
黄木景二, 三田朋希, 松谷浩明, 武田一朗
日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)   26 Feb 2016   
黄木景二, 西本将士
日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)   26 Feb 2016   
内藤龍, 岡安光博, 福山大介, 黄木景二
日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)   26 Feb 2016   
川口拓海, 黄木景二, 堤三佳, 仙波浩雅
日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)   26 Feb 2016   
黄木景二, 村上健祐
日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)   26 Feb 2016   
黄木景二, 林昂広, 松谷浩明, 武田一朗
日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)   26 Feb 2016   
OGI Keiji, NISHIMOTO Masashi
The Proceedings of Conference of Chugoku-Shikoku Branch   2016   
NAITO Ryo, OKAYASU Mitsuhiro, FUKUYAMA Daisuke, OGI Keiji
The Proceedings of Conference of Chugoku-Shikoku Branch   2016   
OGI Keiji, MURAKAMI Kensuke
The Proceedings of Conference of Chugoku-Shikoku Branch   2016   
OGI Keji, MITA Tomoki, MATSUTANI Hiroaki, TAKETA Ichiro
The Proceedings of Conference of Chugoku-Shikoku Branch   2016   
OGI Keiji, HAYASHI Takahiro, MATSUTANI Hiroaki, TAKETA Ichiro
The Proceedings of Conference of Chugoku-Shikoku Branch   2016   
KAWAGUCHI Takumi, OGI Keiji, TSUTSUMI Mitsuyoshi, SENBA Hiromasa
The Proceedings of Conference of Chugoku-Shikoku Branch   2016   
山崎良介, 影山由幸, 尾崎良太郎, 黄木景二, 門脇一則
電気学会放電研究会資料   4 Dec 2015   
SAITO Kei, OGI Keiji, HAYASHI Takahiro
Materials and processing conference   14 Nov 2015   
黄木景二, 松谷浩明, 武田一朗
飛行機シンポジウム講演集(CD-ROM)   Nov 2015   
Characterization of low-velocity and high-velocity impact damage on CFRP toughened with interleave layers
R. Othman, K. Ogi and S. Yashiro
International Conference on Advanced Technology in Experimental Mechanics 2015   Oct 2015   
Fatigue behavior of open-holed unidirectionally arrayed chopped strand CFRP laminates with interleaf layers
Sudarsono and K. Ogi
International Conference on Advanced Technology in Experimental Mechanics 2015   Oct 2015   
山崎良介, 影山由幸, 黄木景二, 尾崎良太郎, 門脇一則
電気関係学会四国支部連合大会講演論文集(CD-ROM)   26 Sep 2015   
WATANABE Shinta, MATSUDA Shinya, YASHIRO Shigeki, OGI Keiji
Mechanical Engineering Congress, Japan   13 Sep 2015   
This paper presents machining quality of circular piercing hole produced by punch press in CFRP laminates under low-velocity impact load. A piercing hole was produced by using a punch with flat surface under low-velocity impact load and quasi-stat...
杉田聡司, 粟木久光, 吉岡賢哉, 横田翼, 黄木景二, 松本浩典, 宮澤拓也, 前島将人, 島直究, 國枝秀世, 石川隆司, 浜田高嘉, 石田直樹, 秋山浩庸, 岸本和昭, 宇都宮真, 神谷友祐
日本天文学会年会講演予稿集   20 Aug 2015   
Effect of temperature and clearance on shear cutting behaviors in CFRP laminates
K. Ogi, S.Yashiro, N. Nakamura, S. Nakata and K. Suma
Proceedings of ICCM-20   Jul 2015   
Experimental and Numerical Characterization of High-Velocity Impact Damage in CFRP Laminates
S. Yashiro, K. Ogi, A. Yoshimura and Y. Sakaida
Proceedings of ICCM-20   Jul 2015   
EXPERIMENTAL AND NUMERICAL MODELLING OF CFRP LAMINATES TOUGHENED WITH INTERLEAVE LAYERS SUBJECTED TO LOW-VELOCITY IMPACT
Apr 2015   
K. Ogi, S. Yashiro
ICCM International Conferences on Composite Materials   1 Jan 2015   
© 2015 International Committee on Composite Materials. All rights reserved. The purpose of the present study is to optimize the shear cutting conditions of CFRP laminates. First, specimens of thermosetting (epoxy) and thermoplastic (polyamide 6) C...

Works

 
Development of treatment device for the liver and heart
2003 - 2005

Research Grants & Projects

 
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(B))
Project Year: 2009 - 2011    Investigator(s): Keiji OGI
High-speed(around the sound velocity) impact damage in CFRP(carbon fiber reinforced plastic) laminates was characterized. First, foreign object impact tests were conducted to obtain high-speed impact damage data. Next, modeling of damage phenomena...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(B))
Project Year: 2006 - 2008    Investigator(s): Keiji OGI
Characterization of foreign object damage in CFRP
Funded Research
Project Year: 2007 - 2007
Investigation of cutting mechanisms in CFRP laminates for automotive parts and optimization of cutting parameters
Project Year: 2010 - 2012
Improvement of strength in discontinuous fiober reinforced plastics
The Other Research Programs
Project Year: 2003