Damage Localization in Plate Structures Based on Baseline-Free Method of Lamb Wave Using Mobile Transducer Set
Journal
Key Engineering Materials
Journal Volume
970
Start Page
119
End Page
123
ISSN
1662-9795
Date Issued
2023-12-15
Author(s)
Chun Kun Chiang
DOI
10.4028/p-KVttX1
Abstract
Ultrasonic Lamb waves have gained popularity in non-destructive testing of plate-like structures due to their advantages such as low attenuation, high sensitivity, and wide detection range. This paper presents a novel baseline-free method for inspecting curved plate-like structures based on reciprocity loss. The method combines a modified damage imaging algorithm, a baseline-free detection method based on time reciprocity, and a calculation method for damage index values using the analysis of the focus position of time reciprocity signals. Experimental results demonstrate favorable effectiveness of the baseline-free method in detecting and locating multiple defects in the curved plate made of composite laminate.
Subjects
Baseline-free method
Damage localization
Lamb wave
mobile transducer set
Time reciprocity
Publisher
Trans Tech Publications, Ltd.
Type
journal article