2016 Fiscal Year Final Research Report
Effects of Kink Band on Tensile and Fatigue Strength of Poly-p- Phenylene Benzobisoxazole (PBO) Fibers
| Project/Area Number |
26420023
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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 | Toyama Prefectural University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | キンクバンド / 高分子繊維 / 紫外線劣化 / 強度特性 |
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| Outline of Final Research Achievements |
In this study, effects of kink band on tensile and fatigue strength of Poly-p- Phenylene Benzobisoxazole (PBO) fibers were investigated. As a result of Weibull analysis, it was found that kink bands act as defects that degrade the tensile strength. A Weibull analysis demonstrated that the concept of effective volume explains the tensile strength of PBO fiber. When the PBO fiber with kink band was subjected to ultraviolet light, the residual strength is greatly reduced due to the auto-oxidation generated in the kink damaged region. The maximum stress was most suitable parameter to describe the fatigue strength of PBO fiber with kink band.
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| Free Research Field |
材料強度、破壊力学、信頼性工学
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