复合材料结构敲击法无损检测的灵敏度研究

SENSITIVITY OF THE COIN-TAP METHOD OF NONDESTRUCTIVE TESTING FOR COMPOSITE STRUCTURES

本文研究了应用敲击法（ｃｏｉｎ－ｔａｐｍｅｔｈｏｄ）对复合材料结构进行无损检测的基本原理，并建立了典型的损伤检测判据，同时对含不同大小损伤ＧＦＲＰ复合材料的最小可检测损伤进行了详细分析。

The physical basis of nondestructive testing for composite structures using thecoin-tap n1ethod has been investigated.A typical criterion of inspecting defects isestablished.Meantime,the minimum detectable defect for GFRP composite laminatesincluding different defects has been analyzed in detail.A defect of 10mm diameter under a2mm thick laminate is at the margin of detectability. Therefore,the method is particularlyattractive for use in the field and on laminate structures that may be porous.