2017年9月
ボイドがCFRP積層板強度に及ぼす影響の負荷方向による差異についての微視的観点からの考察
日本複合材料学会誌
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- 巻
- 43
- 号
- 5
- 開始ページ
- 181
- 終了ページ
- 192
- 記述言語
- 日本語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.6089/jscm.43.181
- 出版者・発行元
- 日本複合材料学会
<p>This study investigates the effect of voids as manufacturing defects on the matrix-dominated strengths of carbon fiber reinforced plastic (CFRP) by coupon level testing. Specimens were cut from CFRP laminates prepared with different void volume fractions, Vv, by intentionally changing the curing conditions during their fabrication. The transverse tensile strength and the inter-laminar shear strength were evaluated by transverse-tensile testing and short-beam shear testing, respectively, using unidirectional flat specimens. The inter-laminar tensile strength was evaluated by performing four-point bending tests using unidirectional L-shaped curved specimens. The test results showed that these strengths decreased with increase in Vv and the ratio of decrease in strength to the increase in Vv varied according to the loading direction. The X-ray computed micro-tomography of the samples taken from the laminates used for the strength tests revealed the microscopic features of the shapes and the distributions of the voids in the CFRP laminates. The effect of voids on the strengths of CFRP laminates considering the stress concentrations around the voids is discussed based on the microscopic features of the voids and the internal loading directions in the critical regions.</p>
- リンク情報
- ID情報
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- DOI : 10.6089/jscm.43.181
- ISSN : 0385-2563
- CiNii Articles ID : 130007490523
- CiNii Books ID : AN00196748