The peel strength of fiberglass chopped strand composites is determined through a standardized testing method known as the ASTM D3167 test. This test involves applying a tensile force to separate the composite layers and measuring the force required to peel them apart. The result obtained from this test provides an indication of the adhesion strength between the fiberglass strands and the resin matrix, which is crucial for evaluating the overall performance and suitability of the composite material for specific applications.
