ASTM D5379 V-Notched Beam Testing (losipescu) of CFRP

The V-notched beam testing method (Iosipescu method, ASTM D5379) is used widely in the field of composite materials for testing in-plane shear. This test method applies an asymmetrical four-point compression load to a sample with V-notches, which enables the application of only shear stress on the evaluation area.
This method can be used with various CFRP laminate materials, including unidirectional materials, orthogonally laminated materials, and materials with discontinuous fibers.
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