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ファイル | 記述 | サイズ | フォーマット | |
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jscm.44.205.pdf | 3.09 MB | Adobe PDF | 見る/開く |
タイトル: | X線CTを利用したボイド形状の特徴観察とCFRP樹脂支配型強度へのボイドの影響の評価 |
その他のタイトル: | Evaluation of the Effect of Voids on Matrix-Dominated Strength of CFRP Based on Void Shape Characterization Using X-ray CT |
著者: | 新玉, 重貴 橋爪, 良輔 古賀, 貢史 西川, 雅章 https://orcid.org/0000-0003-1017-6344 (unconfirmed) 北條, 正樹 松田, 直樹 https://orcid.org/0000-0001-8387-5993 (unconfirmed) |
著者名の別形: | ARATAMA, Shigeki HASHIZUME, Ryosuke KOGA, Koshi NISHIKAWA, Masaaki HOJO, Masaki MATSUDA, Naoki |
キーワード: | Polymer-matrix composites (PMCs) Void Matrix-dominated strength X-raycomputed tomography (CT) Weibull model |
発行日: | Nov-2018 |
出版者: | 日本複合材料学会 |
誌名: | 日本複合材料学会誌 |
巻: | 44 |
号: | 6 |
開始ページ: | 205 |
終了ページ: | 218 |
抄録: | In this study, void distributions in unidirectional carbon fiber-reinforced plastic (CFRP) laminates were measured using X-ray computed tomography (CT), and the stress concentrating effects of the voids on the reduction of the CFRP matrix-dominated strength were modeled. We first investigated the statistical features of the void sizes, geometrical shapes, and locations by analysis of the X-ray CT three-dimensional images. The natural logarithms of the void sizes showed a three-dimensional normal distribution; consequently, the void shapes and aspect ratios were correlated. Next, using the measured results regarding the voids, the stress concentration effect on the reduction of transverse tensile strength was modeled based on the Weibull model considering the volume dependence of strength. From the results, we attributed the decrease in the matrix-dominated strength with increases in void volume fraction to the increase in stress concentration volumes accompanying the increased number of voids. |
著作権等: | © 2019 日本複合材料学会 |
URI: | http://hdl.handle.net/2433/265047 |
DOI(出版社版): | 10.6089/jscm.44.205 |
出現コレクション: | 学術雑誌掲載論文等 |
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