ASTM D7615 is the standard test method for open-hole fatigue response of polymer matrix composite laminates. ASTM D7615 provides for testing composite specimens in tension-tension, compression-compression, or tension-compression cyclic loading. A specimen support fixture, as defined in ASTM D6484, is required for any tests using compressive loading. If testing for changes in specimen stiffness, cyclic loading is halted after a predetermined number of cycles to make a stiffness measurement under quasi-static loading.
Ultimately the test is run until failure of the composite specimen occurs by fracture, rupture, or a predetermined loss of dynamic stiffness. ASTM D7615 is the fatigue testing supplement to the ASTM D5766 test of tensile open-hole strength and ASTM D6484 test of compressive open-hole strength of polymer matrix composite laminates.
By means of our fatigue testing expertise and modular product design, we will help find the solution that is right for you. Give our test engineers a call today for help configuring the best test machine and accessories according to ASTM D7615.
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