Application of the V-Notch Shear Testing for Unidirectional Hybrid Composities

Published

December 1, 2002

Author(s)

J He, Martin Y. Chiang, Donald L. Hunston, Charles C. Han

Abstract

The v-notch (losipescu) shear test was investigated as a mean for determining the in-plane shear modulus and strength of unidirectional hybrid composites. Two types of hybrid systems having different fiber tow volume fractions composed of carbon and glass fiber tows with epoxy matrix were used for this study. A fiber ow-based finite element analysis was also used to simulate the v-notch shear test for characterizing stress-strain distributions of the specimen. Our experimental and numerical evaluation shows that although the local inhomogeneity inherent in the hybrid composites affects the composite mechanics at a small scale in the v-notch specimen, the test still exhibits a limited region possessing a reasonably pure and uniform stress-strain state between the notches to meet the requirement for a desired shear test. Thus, the study indicates that the v-notch test can be used for the shear testing of the hybrid composites studied when it is correctly used.

Citation

Journal of Composite Materials

Volume

36

Issue

No. 23

Pub Type

Journals

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Keywords

finite element analysis, fracture, hybrid composites, Iosipescu V-notch shear test

Citation

He, J. , Chiang, M. , Hunston, D. and Han, C. (2002), Application of the V-Notch Shear Testing for Unidirectional Hybrid Composities, Journal of Composite Materials, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852047 (Accessed October 11, 2025)