Seale M D, Smith B T, Prosser W H, Zalameda J N
Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA.
J Acoust Soc Am. 1998 Sep;104(3 Pt 1):1399-403. doi: 10.1121/1.424349.
Among the various techniques available, ultrasonic Lamb waves offer a convenient method of examining composite materials. Since the Lamb wave velocity depends on the elastic properties of a material, an effective tool exists to evaluate composites by measuring the velocity of these waves. Lamb waves can propagate over long distances and are sensitive to the desired in-plane elastic properties of the material. This paper discusses a study in which Lamb waves were used to examine fiber volume fraction variations of approximately 0.40-0.70 in composites. The Lamb wave measurements were compared to fiber volume fractions obtained from acid digestion tests. Additionally, a model to predict the fiber volume fraction from Lamb wave velocity values was evaluated.
在现有的各种技术中，超声兰姆波提供了一种检测复合材料的便捷方法。由于兰姆波速度取决于材料的弹性特性，因此存在一种通过测量这些波的速度来评估复合材料的有效工具。兰姆波可以远距离传播，并且对材料所需的面内弹性特性敏感。本文讨论了一项研究，其中使用兰姆波检测复合材料中纤维体积分数约为0.40 - 0.70的变化情况。将兰姆波测量结果与通过酸消化试验获得的纤维体积分数进行了比较。此外，还评估了一个根据兰姆波速度值预测纤维体积分数的模型。
