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THE DOUBLE-NOTCH SHEAR TEST SPECIMEN FOR COMPOSITE MATERIALS

机译:复合材料双缺口剪切试验标本

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摘要

A shear test method for composite materials, typically termed Double-Notch Shear, has been in existence for many years and is still used, but not without controversy. It is defined by ASTM International's (West Conshohocken, Pa.) "Standard Test Method for In-Plane Shear Strength of Reinforced Plastics" (ASTM D 3846). Even its title is controversial because it is not an in-plane shear test, but rather an interiaminar shear test. That is, it measures the through-the-thickness shear strength of the composite, just as the Short Beam Shear test method (ASTM D 2344) does. Presumably, the two test methods should produce the same shear strength values. But they don't.
机译:复合材料的剪切测试方法(通常称为双缺口剪切)已经存在了很多年,并且仍在使用,但并非没有争议。它是由ASTM International(宾夕法尼亚州West Conshohocken)的“增强塑料的平面内剪切强度的标准测试方法”(ASTM D 3846)定义的。甚至其名称也引起争议,因为它不是平面内剪切测试,而是内部剪切测试。也就是说,它可以测量复合材料的整个厚度剪切强度,就像短梁剪切试验方法(ASTM D 2344)一样。据推测,两种测试方法应产生相同的剪切强度值。但是他们没有。

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