ASTM D7264 Standard Test Method for Flexural Properties of Polymer Matrix Composite Materials

Scope:
This test is designed for testing of flexural properties of polymer matrix composites by using a coupon of a rectangular cross section supported by two parallel beams set to a specific support span and deflected at a constant rate from the center of the span.

Procedure:
This test contains two procedures.  Procedure A involves a three point loading system, while procedure B utilizes a four point loading system.  Each procedure requires different calculations for strain due to the different deflections per each system.

Data:
Flexural strength, maximum flexural stress, maximum strain, modulus of elasticity, failure mode, location of failure

Equipment Used:
Test frame, four point flexural fixture, three point flexural fixture

Test Fixture and Setup
Flexure setup

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