ASTM D7078 - V-Notched Rail Shear Testing Method of CFRP
ASTM D7078 is a V-notched rail shear testing method that is widely used to determine the in-plane shear characteristics of composite materials. This method uses a sample without holes with a large gauge section and can accommodate CFRPs with discontinuous fibers.
Shear strain can be calculated using the AGX Series, TRAPEZIUM X Series software and an ASTM D7078 test jig. For this test, two strain gauges were attached at the midpoint between the V notches in order to measure strain in -45° and +45° directions. The equipment configuration is shown in Table 1. Table 2 shows that the test results are highly reproducible.