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Some aspects of ultrasonic testing of composites

机译:复合材料超声测试的某些方面

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Nondestructive testing (NDT) methods play an important role in physical characterization of new composite materials and in assessment of their quality and serviceability in structures. Ultrasonic NDT methods are an effective instrument for evalaution of elastic modules, strength, stiffness, and other essential parameters which are vital for analysis and design of structures. Unfortunately, it seems impossible to compilate directly achievements of ultrasonic techniques for other materials to composites. Elastic modules are very important for characterization of materials, but ultrasonic testing of composites gives a considerable dispersion of data. An attempt is made to approach composites as stochastic materials and to develop a new concept of ultrasonic data analysis. It is proposed t used effective dynamic elastic modules for ultrasonic characterization of composites. Some experimental results based on this concept are presented in this work.
机译:无损检测(NDT)方法在新型复合材料的物理表征以及评估其质量和结构适用性中起着重要作用。超声NDT方法是一种有效的工具,可用于回弹弹性模块,强度,刚度和其他对于结构分析和设计至关重要的基本参数。不幸的是,似乎不可能直接将其他材料的超声技术成果转化为复合材料。弹性模块对于材料的表征非常重要,但是复合材料的超声测试可以使数据分散。尝试将复合材料作为随机材料,并开发超声数据分析的新概念。提出了用于复合材料超声表征的有效动态弹性模块。在这项工作中提出了一些基于该概念的实验结果。

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