ABSTRACT
This chapter discusses the most commonly used test methods in laminated composites: tension tests, compression tests and shear tests. It does not cover all the existing test methods in any one of these three types of tests. Some test methods use thick laminates to avoid global buckling. Other test methods generally have high stress concentrations and steep stress gradient in the specimens. The existing compression test methods can generally be classified into four main categories: end-loaded straight coupon such as ASTM D 695; face-loaded straight coupon such as ASTM D 3410, IITRI test; point-loaded sandwich beam such as ASTM D 3410, sandwich beam; and radial-loaded ring specimen. A stress analysis or a careful experimental evaluation is always needed to determine the magnitude of this stress concentration factor. If this is taken into consideration, accurate elastic properties of a material can generally be acquired.
