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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.
|A||For materials that break at relatively small deflections.||0.01 mm/mm/min|
|B||For materials that undergo large deflections during testing.||0.10 mm/mm/min|
Flexural Test Configuration
Location of Maximum Fiber Stress/Strain
|Flexural Modulus||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.|
|Flexural Strength||The maximum outer fiber stress sustained by a specimen during testing.|