J-GLOBAL         Last updated: Oct 8, 2019 at 11:37
Shizuoka University
Graduate School of Science and Technology,Research Division - Research of Energy System
Job title
Other affiliation
Shizuoka UniversityShizuoka University

Research Areas


Academic & Professional Experience

Feb 2014
Professor, Shizuoka University
Research Associate, Faculty of Engineering, Shizuoka University
- Associate Professor, Faculty of Engineering, Shizuoka University
Research Associate, School of Engineering, Nagoya University


Graduate School, Division of Engineering, Nagoya University
Faculty of Engineering, Nagoya University

Published Papers

Tetsu-to-Hagané   104(12) 728-734   Dec 2018   [Refereed]
Hideaki Aoki, Kunio Hayakawa, Naoyuki Suda
Procedia Manufacturing   15 496-503   Sep 2018   [Refereed]
Takashi Yamamoto, Kunio Hayakawa
Procedia Manufacturing   15 1708-1715   Sep 2018   [Refereed]
Tatsuya Fujii, Kunio Hayakawa, Takafumi Harada, Shinobu Narita
Procedia Manufacturing,   15 1785-1791   Sep 2018   [Refereed]
[責任著者]P. Groche, P. Kramer, N. Bay, P. Christiansen, L. Dubar, K. Hayakawa, C. Hu, K. Kitamura, P. Moreau
CIRP Annals   67(1) 261-264   May 2018   [Refereed]
[責任著者]K. Hayakawa [共著者]T. Nakamura
Key Engineering Materials   767 157-162   Apr 2018   [Refereed]
Hideaki Aoki, Kunio Hayakawa, Naoyuki Suda
Procedia Manufacturing   15 496-503   Jan 2018
© 2018 The Authors. Published by Elsevier B.V. Tooling marks usually remain as grooves on the surface of piston of internal combustion engine, due to the final finishing process by machining. In this paper, therefore, the influence of the grooves ...
Tatsuya Fujii, Kunio Hayakawa, Takafumi Harada, Shinobu Narita
Procedia Manufacturing   15 1785-1791   Jan 2018
© 2018 The Authors. Published by Elsevier B.V. Cyclic simple shear tests were conducted to investigate Bauschinger effect in the large strain region of the material for cold forging. A specimen for the test was prepared from stainless steel drawn ...
Takashi Yamamoto, Kunio Hayakawa
Procedia Manufacturing   15 1708-1715   Jan 2018
© 2018 The Authors. Published by Elsevier B.V. Carbon fiber reinforced thermoplastic has been expected in automobile industry because of the promising properties for higher production rate, lower manufacturing cost, as well as higher recyclability...
[責任著者]Hayakawa, K. [共著者]Yoshida, H.,Nakamura, T.
Procedia Engineering   207 944-949   Nov 2017   [Refereed]
[責任著者]Hayakawa, K. [共著者]Narita, S.,Harada, T.,Kubota, Y.,Uemori, T.
Procedia Engineering   207 167-172   Nov 2017   [Refereed]
[責任著者]早川 邦夫 [共著者]鈴木 正人,岡島 いづみ,佐古 猛
Journal of the Japan Society for Technology of Plasticity   58(682) 985-989   Nov 2017   [Refereed]
[責任著者]早川 邦夫 [共著者]成田 忍,上森 武,久保田 義弘
Journal of the Japan Society for Technology of Plasticity   57(670) 1074-1080   Nov 2016   [Refereed]
Evaluation of Environmentally Friendly Lubricant for Aluminum Alloy Cold Forging
[責任著者]鷺坂芳弘 [共著者]石橋格,中倉敏成,中村保,早川邦夫
Journal of the Japan Society for Technology of Plasticity   57(664) 473-478   May 2016   [Refereed]
[責任著者]Kunio Hayakawa [共著者]Yoshihiro Kubota,Takumi Okano,Shigekazu Tanaka,Tamotsu Nakamura
Procedia Engineering   81((num)) 2421-2426   Oct 2014   [Refereed]
[責任著者]K. Hayakawa,Y. Sagisaka [共著者]T. Nakamura,I. Ishibashi,T. Nakakura
Advanced Materials Research   966-967((num)) 301-310   Jun 2014   [Refereed]
[責任著者]吉田 始 [共著者]早川 邦夫,坂井田 喜久,中村 保,磯谷 章,矢代 茂樹
Journal of the Japan Society for Technology of Plasticity   54(626) 262-266   Mar 2013   [Refereed]
[責任著者]Sagisaka, Y. [共著者]Hayakawa, K.,Nakamura, T.,Ishibashi, I.
Journal of Manufacturing Processes   15(1) 96-101   Feb 2013   [Refereed]
Cold Extrusion of Spur Gear with Inner Spline
[責任著者]吉田 始 [共著者]早川 邦夫,坂井田 喜久,沢木 洋三,中村 保,磯谷 章
Journal of the Japan Society for Technology of Plasticity   54(624) 69-73   Jan 2013   [Refereed]
Shaping of Internal Helical Gear by Two-Step Cold Extrusion
[責任著者]吉田 始 [共著者]早川 邦夫,沢木 洋三,坂井田 喜久,中村 保,鈴木 正
Journal of the Japan Society for Technology of Plasticity   54(624) 64-68   Jan 2013   [Refereed]
Shaping of Gear by Cold Extrusion Using Double Cylindrically Layered Workpiece Consisting of Different Materials
[責任著者]吉田 始 [共著者]早川 邦夫,沢木 洋三,坂井田 喜久,中村 保,矢代 茂樹
Journal of the Japan Society for Technology of Plasticity   53(621) 929-933   Oct 2012   [Refereed]
Kunio Hayakawa
Toraibarojisuto/Journal of Japanese Society of Tribologists   57 252-254   Apr 2012
Yoshihiro Kubota, Tamotsu Nakamura, Kunio Hayakawa, Shigekazu Tanaka
Steel Research International   SPL. ISSUE 1347-1350   Jan 2012
The present authors have developed a net shape forming process for sintering a thin-walled cylindrical can made of pure titanium powder by SPS process, a kind of pressure sintering process, with appropriate property and geometrical accuracy. In th...
Kunio Hayakawa, Hiroyuki Mori, Keita Koyabu, Tamotsu Nakamura, Shigekazu Tanaka
Steel Research International   SPL. ISSUE 1027-1030   Jan 2012
The interfacial stress state of the scratch test was evaluated using finite element analyses. DLC-Si was employed as a film material. As substrate materials, SUS440, SUS304, A2024 and WC-Co were used. The calculated result in case of SUS440 was co...
Rapid laser bending with line-shaped beam spot
[責任著者]Shigekazu Tanaka [共著者]Mohd Azri,Kunio Hayakawa,Tamotsu Nakamura,Yasushi Yamaya,Asami Morino,Hitoshi Omata
STEEL RESEARCH INTERNATIONAL   81(9) 962-965   Sep 2010   [Refereed]
Influence of anisotropic property of plastic-deformation-dependent Young's modulus of stainless steel sheet on analytical accuracy of spring back
[責任著者]Kunio Hayakawa [共著者]Kentaro Sawano,Tamotsu Nakamura,Yasuyuki Imai,Yoshihiro Kubota,Yasuo Namba,Yusuke Tabuchi
steel research international   81(9) 1380-1383   Sep 2010   [Refereed]
Net shape forming of thin walled cylindrical can by DC pulse resistance sintering process of titanium powder metal
[責任著者]Yoshihiro Kubota [共著者]Tamotsu Nakamura,Shigekazu Tanaka,Kunio Hayakawa
steel research international   81(9) 1336-1339   Sep 2010   [Refereed]
Detection of tribological condition during sheet metal forming using fractal property of acoustic emission
[責任著者]Kunio Hayakawa [共著者]Kazumi Saito,Tamotsu Nakamura,Shigekazu Tanaka
steel research international   81(9) 702-705   Sep 2010   [Refereed]
Kunio Hayakawa, Tamotsu Nakamura, Shigekazu Tanaka
International Journal of Damage Mechanics   19 421-439   May 2010
Elastic-plastic constitutive equation of hard metal for cold forging tools such as WC-Co cemented carbide with anisotropic damage is proposed to predict a precise service life of cold forging tools. A second rank symmetric damage tensor is introdu...
Elastic-Plastic Constitutive Equation of WC-Co Cemented Carbides for Forging Tool with Anisotropic Damage
[責任著者]K. Hayakawa [共著者]T. Nakamura,S. Tanaka
International Journal of Damage Mechanics   19(4) 421-440   May 2010   [Refereed]
T. Nakamura, S. Tanaka, K. Hayakawa
Toraibarojisuto/Journal of Japanese Society of Tribologists   54 831   Dec 2009
Kunio Hayakawa
Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan   95 773-779   Dec 2009
Three-dimensional finite element analysis of a roller straightening of an equal leg angle was performed in the present paper in order to validate the usefulness of the employment of FEM to the determination of the intermeshes of rolls in actual ro...
Experimental and Numerical Investigation on Negative Springback in Incremental Sheet Metal Forming
[責任著者]S. Tanaka [共著者]T. Nakamura,K. Hayakawa,H. Nakamura,K. Motomura
STEEL RESEARCH INTERNATIONAL   79(1) 55-62   Sep 2008   [Refereed]
[責任著者]早川 邦夫,Kunio Hayakawa [共著者]Tamotsu Nakamura,Shigekazu Tanaka
STEEL RESEARCH INTERNATIONAL   79(1) 506-512   Sep 2008   [Refereed]
Finite Element Analysis of V-Bending of Polypropylene Using Hydrostatic-Pressure-Dependent Plastic Constitutive Equation
[責任著者]早川 邦夫,K.Hayakawa [共著者]Y.Sanomura,M.Mizuno,Y.Kasuga,T.Nakamura
MATERIALS TRANSACTIONS JIM   48(10) 2659-2664   Oct 2007   [Refereed]
[責任著者]久保田義弘 [共著者]中村保,田中繁一,早川邦夫,中村英雄,本村一朗,宮崎哲平
Journal of the Japan Society for Technology of Plasticity   48(557) 563-567   Jun 2007   [Refereed]
Kunio Hayakawa, Yukio Sanomura, Mamoru Mizuno, Yukio Kasuga, Tamotsu Nakamura
Key Engineering Materials   340-341 II 1103-1108   Apr 2007
Finite element analysis of V-bending process of polypropylene was performed using hydrostatic-dependent elastic-plastic constitutive equations proposed by the present authors. Kinematic and Isotropic hardening rule was employed for the plastic con...
Yukio Sanomura, K. Hayakawa, M. Mizuno, M. Kawamura
Polymer Composites   28 29-35   Feb 2007
We examined the effects of process conditions on Young's modulus and tensile strength of extruded short-fiber reinforced thermoplastics. With increasing extrusion ratio and decreasing extrusion temperature, the fiber alignment increases, the mean ...
Finite Element Analysis of V-Bending of Polypropylene Using Hydrostatic-Pressure Dependent Plastic Constitutive Equation
[責任著者]Kunio Hayakawa [共著者]Yukio Sanomura,Mamoru Mizuno,Yukio Kasuga,Tamotsu Nakamura
Key Engineering Materials   340-341 1103-1108   Jan 2007   [Refereed]
T. Nakamura, S. Tanaka, K. Hayakawa, M. Sugisawa, K. I. Aoyama, J. I. Shibata
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture   220 65-71   Dec 2006
The present authors have developed a tribo-simulator for the long-term iterative processes of sheet metal forming. A sheet metal blank wrapped around a mandrel with a rubber sheet can be deformed by the steel ball as a tool to make spiral grooves ...
Fratal property of Acoustic Emission of cold forward extrusion die in practical manufacturing-scale experiment using bolt part former
[責任著者]早川 邦夫 [共著者]齊藤和美,中村保,田中繁一,野末卓哉
47(546) 606-610   Jul 2006   [Refereed]
Tribo-Characteristics of Stainless Steel Sheets in Iterative Processes of Sheet Metal Forming
[責任著者]T Nakamura [共著者]S Tanaka,K Hayakawa,M Sugisawa,K-I Aoyama,J-I Shibata
Kunio Hayakawa, Tamotsu Nakamura
Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao   26 623-628   Dec 2005
A detection method of damage to and fracture of forging tools using a fractal property of acoustic emission (AE) technique was proposed. A magnitude of fractal dimension of AE calculated from the distribution of amplitude of AEs during a forging o...
Tamotsu Nakamura, Kunio Hayakawa, Shigekazu Tanaka, Haruki Imaizumi, Yuhta Nakagawa
Materials Transactions   46 292-297   Feb 2005
The characteristics of various metals bonded by DC pulse resistance heat pressure welding using spark plasma sintering (SPS) process are investigated. As the results of the experiments, the SPS process is found to complete heat pressure welding in...
[責任著者]T. Nakamura [共著者]K.Hayakawa,S. Tanaka,H. Imaizumi,Y. Nakagawa
MATERIALS TRANSACTIONS   46(2) 292-297   Jan 2005   [Refereed]
Kunio Hayakawa, Tamotsu Nakamura, Shigekazu Tanaka, Kuniaki Harada
Materials Transactions   45 2832-2837   Jan 2004
The behavior of the interface of a cold forging tool coated with a hard film is analyzed by the finite element method (FEM). The mechanical properties of the interface between a hard film and a tool material are modeled under the framework of the ...
Yukio Sanomura, Kunio Hayakawa
Zairyo/Journal of the Society of Materials Science, Japan   53 143-149   Jan 2004
Hydrostatic pressure dependence of the mechanical behavior of polymers is studied by three constitutive modeling, in which the yield surface is described by the first and the second invariant of stress and the nonassociated flow rule satisfies the...
Kunio Hayakawa, Tamotsu Nakamura, Shigekazu Tanaka
Materials Transactions   45 461-468   Jan 2004
The local approach of fracture based on continuum damage mechanics (CDM) combined with the finite element method (FEM) was applied to establish a more precise method of estimation of service life of cold forging tools by simulating the initiation ...
Kunio Hayakawa, Tamotsu Nakamura, Hideki Yonezawa, Shigekazu Tanaka
Materials Transactions   45 3136-3141   Jan 2004
The detection of damage to and fracture of cold forging tools during forming operation by fractal property of acoustic emission (AE) is performed. First, a tensile test on tool steel is conducted to elucidate the fractal dimensions of deformation-...
Analysis on Fatigue Crack Initiation and Propagation of Cold Forging Tools by Local Approach to Fracture
[責任著者]K. Hayakawa [共著者]T. Nakamura,S. Tanaka
Material Transaction   45(2) 461-468   Jan 2004   [Refereed]


The Study of Bonding and Complex Material Concerning with Practical Accident -2nd Report-
[責任著者]白井秀明 [共著者]吉田一也,佐野村幸夫,早川邦夫,桜井冨美夫
Journal of JSTP   44(512) 922-927   Sep 2003
Annual Review- Plastic Materials-
[責任著者]長谷部忠司 [共著者]後藤學,早川邦夫,沢田孚夫
Journal of JSTP   44(511) 775-792   Aug 2003

Books etc

Damage Mechanics in Engineering Materials
K. Hayakawa,S. Murakami (Part:Joint Work)
Elsevier   Jan 1998   

Conference Activities & Talks

Sicong Wang, Akihiro Goto, Atsushi Nakata, Kunio Hayakawa, Katsuhiko Sakai
Lecture Notes in Networks and Systems   1 Jan 2019   
© 2019, Springer Nature Switzerland AG. The authors have been developing the method to recover the material of sintered carbide in electrochemical machining (ECM). The ECM performance is affected by the change in the electrolyte ingredient when th...
Takaya Kondo, Hirohito Nakata, Junya Sekikawa, Yoshihiro Kubota, Kunio Hayakawa, Tamotsu Nakamura
Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts   1 Jan 2015   
© 2014 IEEE. In automotive connectors, electrical current through the tin-plating flows as a result of fracture of the oxide film due to the expansion on the terminal surface area by contact load, and following metal to metal contact. It has been ...
Yoshihiro Sagisaka, Tamotsu Nakamura, Kunio Hayakawa, Itaru Ishibashi
Transactions of the North American Manufacturing Research Institution of SME   28 Nov 2012   
It is required to replace the aluminum fluoride coating, which is a popular lubricant for aluminum alloy cold forging in Japan, with environmentally friendly lubricants, because the aluminum fluoride coating has high environmental risks and needs ...
K. Hayakawa, H. Mori, K. Koyabu, T. Nakamura
Proceedings of the 10th International Conference on Technology of Plasticity, ICTP 2011   1 Dec 2011   
The interfacial stress state was evaluated using three dimensional finite element analysis. DLC-Si and TIN were employed as film materials. As a substrate material, heat treated martensitic SUS440 was used. The indenter made of diamond was suppose...
S. Tanaka, K. Hayakawa, T. Nakamura
Special Edition: 10th International Conference on Technology of Plasticity, ICTP 2011   1 Dec 2011   
In this paper, a new strategy for the single point Incremental forming (SPIF) Is presented. This process Involves the use of non-horizontal path planes of a tool tip and Is oriented to produce steep wall portions. In the most SPIF operations, a se...