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限定らせん積層 CFRP の四点曲げ変形・耐荷挙動の実験的検討
| Title: | 限定らせん積層 CFRP の四点曲げ変形・耐荷挙動の実験的検討 |
| Other Titles: | EXPERIMENTAL INVESTIGATION ON DEFORMATION AND LOAD BEARING BEHAVIORS OF PARTIAL HELICOIDALLY LAMINATED CFRP UNDER FOUR-POINT FLEXURE |
| Authors: | 松本, 高志1 Browse this author →KAKEN DB | | 浜山, 千佳2 Browse this author | | 近藤, 健太3 Browse this author |
| Authors(alt): | Matsumoto, Takashi1 | | Hamayama, Chika2 | | Kondo, Kenta3 |
| Keywords: | CFRP | | plate | | flexure | | fracture | | helicoidal laminate |
| Issue Date: | 2021 |
| 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: | 77 |
| Issue: | 2 |
| Start Page: | I_275 |
| End Page: | I_283 |
| Publisher DOI: | 10.2208/jscejam.77.2_I_275 |
| Abstract: | 既往研究の全方向全厚のらせん積層に対して，らせん積層を部分方向または部分厚で成した限定らせん積層 CFRP の四点曲げ変形・耐荷挙動を実験的に検討した．部分方向らせん積層は，最大荷重後に脆性的な挙動を示したが，その後荷重増加と降下を経て最大荷重の半分弱にまで緩やかに回復した．回復中の小さな荷重降下時にはらせん積層の階段状ひび割れが発生した．部分厚らせん積層は，2つの荷重ピークを示して荷重も半分以下に降下したが，らせん積層部分から広範囲に損傷が始まり，直交積層部分の脆性的な破壊挙動が抑制される損傷・破壊挙動が観察された． | | This paper investigates on the four-point flexural deformation and load bearing behaviors of partial helicoidally laminated CFRPs. Two partial helicoidal laminates are examined. The helicoidal laminate with limited fiber direction shows a brittle behavior. On the other hand, although the helicoidal laminate skin with cross ply core also shows a brittle behavior, the preceding wide skin damage leads to the mitigation of the brittle core fracture. In comparison with helicoidally laminated CFRP of full thickness and all fiber direction, the two partial helicoidal laminates show higher load capacity and initial stiffness. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/86186 |
| 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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