Elastic constants of B-A1 composites by ultrasonic velocity measurements
Elastic constants of B-A1 composites by ultrasonic velocity measurements
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通过超声波速度测量 B-A1 复合材料的弹性常数
DOI：
10.1007/bf02322839
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发表时间：
1974
影响因子：
2.4
通讯作者：
R. Allred
中科院分区：
文献类型：
--
作者：
J. Gieske;R. Allred
采用超声测速方法，对三种不同体积分数下单向硼硅长丝增强铝复合材料的正交各向异性弹性刚度矩阵进行了实验研究。纵向和剪切速度测量在适当的对称方向上进行了直接接触或液体浸泡技术。利用脉冲穿透法测定的弹性常数与基于组成材料性质的微力学理论一致。力学试验确定的工程常数与超声数据计算的工程常数也吻合。最后，超声波波速的测量也被证明是一种快速的无损检测方法，用于确定长丝体积分数的制造零件。
The complete orthotropic elastic-stiffness matrix of unidirectional, Borsic-filament-reinforced aluminum composites was experimentally evaluated for three different volume fractions by ultrasonic velocity measurements on thin plates. Longitudinal- and shear-velocity measurements were made in appropriate symmetry directions by direct contact or liquid-immersion techniques. The elastic constants determined by this pulsed through-transmission method were in agreement with micromechanical theories based on the properties of the constituent materials. Agreement was also found between engineering constants determined by mechanical testing and those calculated from the ultrasonic data. Finally, measurement of the ultrasonic-wave velocity has also been shown to be a rapid nondestructive-test method for determining filament-volume fraction in a fabricated part.