Non-Destructive Inspection of Impact Damage in Composite Aircraft Panels by Ultrasonic Guided Waves and Statistical Processing

Materials

卷:10

Hyonny Kim¹  Hyungsuk E. Kim¹  Margherita Capriotti²  Francesco Lanza di Scalea² 

[1] Advanced Composites and Aerospace Structures Laboratory, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA;

[2] NDE&SHM Laboratory, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA;

关键词: aerospace structures;    ultrasonic guided waves;    impact detection;    NDE;   

DOI  :  10.3390/ma10060616

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown