Comparison of Static and Dynamic Test Methods for Determining the Stiffness Properties of Graphite/Epoxy Laminates.

摘要

Various test methods for determining the in-plane stiffness properties of composite materials are considered. These tests include tensile coupon, sandwich beam, cantilever beam, and static and dynamic flexure tests. A series of tests are carried out to determine these properties for ASI/3501-6 Graphite/Epoxy laminates. The results indicate a significantly lower longitudinal modulus is found by static and dynamic flexure tests than by the other tests used. Computer software is developed to analyze the data quickly and accurately and also produce graphical output that can be easily interpreted to evaluate each test. Results from several test methods are compared and differences analyzed.