聚焦换能器在SiCp/Al复合材料超声无损检测中的应用

An Application of Focusing Probe in SiCp/Al Composites′ Nondestructive Testing

本文扼要分析了聚焦换能器的声场特性及焦柱的直径和长度,并应用到超声C扫描成像系统中,提供了一种定量研究缺陷的无损检测方法.将聚焦换能器运用到SiCp/Al复合材料的无损检测中,能够判定缺陷的尺寸和形状;并根据缺陷形状和分布判定其性质,同时也分析了缺陷对SiCp/Al复合材料力学性能的影响和缺陷形成的原因.

The sound field characteristic of focusing probe is briefly introduced, and the probe is applied to the Nondestructive Testing for SiCp/Al Composites by imaging device of UTCScanning. The sensitivity and accuracy of nondestructive testing are improved. By using the characteristic of focusing probe, the defect′s size and shape can be determined. Two workpieces of SiCp/Al Composites are tested.The experimental results are given.