Flexural Testing
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.
Flexural testing involves the bending of a material, rather than pushing or pulling, to determine how much the material can bend before it breaks, as well as 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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| The photo shows a three point bend test of 3/8 inch diameter ferrite rods used in a Medical Electronics System. | Measuring residual runout after a bend test of a motor shaft. |
Some frequently used flexural testing standards are:
| ASTM Standards | |
| ASTM C393 | Flexural Properties of Sandwich Constructions |
| ASTM C1161 | Flexural Strength of Advanced Ceramics at Ambient Temperature |
| ASTM D623 | Rubber Property- Heat Generation and Flexing Fatigue in Compression |
| ASTM D648 | Deflection temperature of plastics under flexural load |
| ASTM D790 | Flexural Properties of Un-reinforced and Reinforced Plastics and Electrical Insulating Materials |
| ASTM D2990 | Tensile, Compressive and Flexural Creep and Creep-Rupture of Plastics |
For more information on any of DDL's material, product or package testing services, email us today or call 1-800-229-4235.
