Flexural Properties - ASTM D790
A test specimen is held as a simply supported beam and is subjected to three-point bending. The specimen is deflected until it either breaks or the outer fiber strain reaches 5%.
Two procedures are used for flexural testing.
||For materials that break at relatively small deflections.
||For materials that undergo large deflections during testing.
Flexural Test Configuration
Location of Maximum Fiber Stress/Strain
||The ratio of outer fiber stress to outer fiber strain.
|Flexural Stress at Yield
||The outer fiber stress corresponding to test specimen yield.
|Flexural Stress at Break
||The outer fiber stress corresponding to test specimen failure.
||The maximum outer fiber stress sustained by a specimen during testing.
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