Measurement of interfacial debonding and sliding resistance in fiber reinforced intermetallics |
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| Affiliation: | 1. Department of Mechanical Engineering, College of Engineering, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk 54896, Republic of Korea;2. Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak‐ro, Yuseong‐gu, Daejeon 34141, Republic of Korea;3. Satellite Mechanical Department, Korea Aerospace Research Institute, 169-84 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea;4. Division of Mechanical Engineering, College of Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan 49112, Republic of Korea |
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| Abstract: | A technique is described for measuring fiber debonding and sliding characteristics in intermetallic matrix composites. The method involves pulling a single fiber that protrudes from the composite, while measuring the applied force and relative displacements of the fiber and matrix. High resolution displacement mapping methods are used to obtain data during initial loading, where sliding progresses only partly along the fiber. Measurements from a Ti3Al/SiC composite are interpreted using the analysis of the companion paper. The results indicate a strong effect of constraint on the sliding response and provide quantitative measurements of sliding resistance, residual stresses, and debond energy. Preliminary measurements of changes in sliding resistance with cyclic loading are presented. |
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