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首页> 外文期刊>Journal of Composites Technology & Research >Refinements to the Mixed-Mode Bending Test for Delamination Toughness
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Refinements to the Mixed-Mode Bending Test for Delamination Toughness

机译：改进了混合模式弯曲测试的分层韧性

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摘要

The mixed-mode bending (MMB) test for delamination toughness was first introduced in 1988. This simple test is a combination of the standard Mode I (opening) test and a Mode II (sliding) test. This MMB test has become widely used in the United States and around the world for mixed-mode toughness measurements. Because of the widespread use of this test method, it has been standardized by ASTM Committee D30 as ASTM Standard Test Method D6671. During the standardization process a round robin test activity was conducted that led to several modifications to the test protocol. These modifications included a new method for calculating toughness from the measured test quantities, a more accurate way of setting the mixed-mode ratio to be tested, and the inclusion of a new alignment criterion for improved consistency in measured values. The rational for these modifications, which were included in the test protocol before standardization, are discussed in this paper.
机译：1988年首次引入了用于分层韧性的混合模式弯曲（MMB）测试。该简单测试是标准模式I（开口）测试和模式II（滑动）测试的组合。这种MMB测试已在美国和世界各地广泛用于混合模式韧性测量。由于该测试方法的广泛使用，已被ASTM委员会D30标准化为ASTM标准测试方法D6671。在标准化过程中，进行了循环测试活动，导致对测试协议进行了多次修改。这些修改包括从测量的测试量计算韧性的​​新方法，设置要测试的混合模式比的更准确的方法以及包括新的对齐标准以提高测量值的一致性。本文讨论了这些修改的合理性，这些修改已包含在标准化之前的测试协议中。

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