2014 Fiscal Year Final Research Report
Probabilistic Evauation of compression strength of composite laminated stiffened plates
| Project/Area Number |
24560111
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Sophia University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
長嶋 利夫 上智大学, 理工学部, 教授 (10338436)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 複合材料 / 補強板 / 層間剥離 / 確率特性 |
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| Outline of Final Research Achievements |
Probabilistic evaluation of compressive strength of composite stiffened plate is studied by focusing the debonding of the interface between the skin and frange. The failure of the skin/frange interface was discussed fracture mechanically first and the toughness of the skin/frange interface can be used to predict the debonding of skin/frange interface. Then, the interlaminar tensile strength of the laminate was measured and the interfacial strength was probabilistically evaluated. Finally, a finite element analysis was performed for a composite stiffened panel. The failure load and the expected position of failure mechanically assessed agreed well with the experiment done at JAXA before.
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| Free Research Field |
航空機構造材料
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