Capriotti Margherita, Kim Hyungsuk E, Scalea Francesco Lanza di, Kim Hyonny
NDE&SHM Laboratory, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.
Advanced Composites and Aerospace Structures Laboratory, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.
Materials (Basel). 2017 Jun 4;10(6):616. doi: 10.3390/ma10060616.
This paper discusses a non-destructive evaluation (NDE) technique for the detection of damage in composite aircraft structures following high energy wide area blunt impact (HEWABI) from ground service equipment (GSE), such as heavy cargo loaders and other heavy equipment. The test structures typically include skin, co-cured stringers, and C-frames that are bolt-connected onto the skin with shear ties. The inspection exploits the waveguide geometry of these structures by utilizing ultrasonic guided waves and a line scan approach. Both a contact prototype and a non-contact prototype were developed and tested on realistic test panels subjected to impact in the laboratory. The results are presented in terms of receiver operating characteristic curves that show excellent probability of detection with low false alarm rates for defects located in the panel skin and stringers.
本文讨论了一种无损评估（NDE）技术，用于检测复合飞机结构在受到地面服务设备（GSE）如重型货物装载机和其他重型设备的高能大面积钝击（HEWABI）后的损伤情况。测试结构通常包括蒙皮、共固化桁条以及通过抗剪连接件螺栓连接到蒙皮上的C型框架。该检测方法利用超声导波和线扫描方法，借助这些结构的波导几何形状进行检测。在实验室中，针对遭受冲击的实际测试面板，开发并测试了接触式原型和非接触式原型。结果以接收器操作特性曲线的形式呈现，这些曲线表明对于位于面板蒙皮和桁条中的缺陷，具有出色的检测概率且误报率较低。
