ASTM D790未增强和增强塑料及电绝缘材料的挠曲性的标准试验方法
日期:2012-02-08 11:29
ystem applied to a simply supported beam. A four-point loading system method can be found in Test Method D6272.
1.1.1 Procedure A, designed principally for materials that break at comparatively small deflections.
1.1.2 Procedure B, designed particularly for those materials that undergo large deflections during testing.
1.1.3 Procedure A shall be used for measurement of flexural properties, particularly flexural modulus, unless the material specification states otherwise. Procedure B may be used
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