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らせん積層CFRP板の曲げ破壊挙動の検討
| Title: | らせん積層CFRP板の曲げ破壊挙動の検討 |
| Other Titles: | STUDY ON THE FLEXURAL FRACTURE BEHAVIORS OF HELICOIDALLY LAMINATED CFRP |
| Authors: | 松本, 高志1 Browse this author →KAKEN DB | | 石澤, 郁馬2 Browse this author | | 近藤, 健太3 Browse this author |
| Authors(alt): | Matsumoto, Takashi1 | | Ishizawa, Ikuma2 | | Kondo, Kenta3 |
| Keywords: | CFRP | | plate | | flexure | | fracture | | helicoidal laminate |
| Issue Date: | 2019 |
| Publisher: | 土木学会 |
| Journal Title: | 土木学会論文集A2（応用力学） |
| Journal Title(alt): | Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) |
| Volume: | 75 |
| Issue: | 2 |
| Start Page: | I_581 |
| End Page: | I_588 |
| Publisher DOI: | 10.2208/jscejam.75.2_I_581 |
| Abstract: | 生体構造を模倣したらせん積層 CFRP の板曲げ挙動を実験的に検討した。一方向炭素繊維プリプレグを積層する際に層間の配向角度差を設けることでらせん積層を構成した供試体を作製している。円周支持の平板を中央点集中荷重と中央部分布荷重の条件下で，直交積層の平板と荷重一変位挙動と破壊挙動を比較した。荷重一変位挙動においては，らせん積層は中央部分布荷重下では大きな荷重降下後にも増減を繰り返しながら最大荷重に迫るレベルまで荷重増加が見られた。破壊形態においては，直交積層が局所的であるのに対して，らせん積層の破壊は供試体全体に広がり，層間剝離はねじれるように発生することが確認された。 | | Helicoidally laminated CFRP specimens replicated after a biological body are examined in plate flexure. The specimens were fabricated by stacking unidirectional prepregs with constant fiber angle difference between adjacent laminas. Point loading and distributed loading experiment in plate flexure were conducted, and flexural and fracture behaviors were observed. Compared to cross-ply laminate specimens, helicoidally laminated specimens show widely spread cracks and unique twisted delaminations. Under distributed loading, helicoidally laminated specimens show post-peak load recovery up to the peak load level. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/80790 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 松本 高志
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