New Test Method for Interlaminar Tensile Testing via Flexure on Ceramic Matrix Composite Materials at Ambient and Elevated Temperatures
1. Scope
This test method covers the determination of interlaminar tensile strength of continuous fiber-reinforced ceramic composites, including unidirectional (1D), woven (2D), and other continuous bidirectional (2D) fiber architectures, using a four-point loading system utilizing two force application points equally spaced from their adjacent support points, with a distance between force application points of one-half of the support span. Tests can be performed at ambient temperatures or at elevated temperatures.
Keywords
CMC; flexture; transthickness tensile testing
Rationale
Existing methods for evaluating interlaminar tension in continuous fiber-reinforced ceramic composites rely on adhesives and are therefore not useable for elevated temperature testing. This method provides an alternative method to evaluate interlaminar tensile strength that can be performed at both room and elevated temperatures.
