This mechanical testing method measures the behavior of materials subjected to simple bending loads. Like tensile modulus, flexural modulus (stiffness) is calculated from the slope of the bending load vs. deflection curve.
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Flexural testing involves the bending of a material, rather than pushing or pulling, to determine the relationship between bending stress and deflection.
Flexural testing is commonly used on brittle materials such as ceramics, stone, masonry and glasses. It can also be used to examine the behavior of materials which are intended to bend during their useful life, such as wire insulation and other elastomeric products.
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Shown below are a few of the standards that employ flexural testing:
| ASTM C393 |
Flexural Properties of Sandwich Constructions |
| ASTM C1161 |
Flexural Strength of Advanced Ceramics at Ambient Temperature |
| ASTM D648 |
Deflection temperature of plastics under flexural load |
| ASTM D790 |
Flexural Properties of Un-reinforced and Reinforced Plastics and Electrical Insulating Materials |
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