Flexure Test
Method for measuring behaviour of materials subjected to simple beam loading. Specimen is supported on two knife edges as a simple beam and load is applied at its midpoint. Maximum fibre stress and maximum strain are calculated for increments of load. Results are plotted in a stress-strain diagram, and maximum fibre stress at failure is flexural strength. Flexural yield strength is reported for materials that do not crack. Standard test procedures are given in ASTM D-790 (plastics) and ASTM C-674 (fired whiteware). ASTM D-797 (elastomers), ASTM A-438 (cast iron) and ASTM D-86 (glass)
Flexural Modulus of Elasticity
Alternate term for modulus in bending.
Flexural Strength
Maximum fibre stress developed in a specimen just before it cracks or breaks in a flexure test.