Development of a Multi-Layer Guided Wave Inspection Technique

Quarry, M ; Chinn, D ; Hay, T

Lawrence Livermore National Laboratory

关键词: Plates;    36 Materials Science;    Thickness;    Ultrasonic Waves;    Energy Spectra;   

DOI  :  10.2172/15005388
RP-ID  :  UCRL-ID-142930
RP-ID  :  W-7405-ENG-48
RP-ID  :  15005388

美国|英语

来源: UNT Digital Library

【 摘 要 】

This study investigates the inspection of a particular layer of a multi-layer structure using ultrasonic guided waves. Techniques based on Lamb waves have been developed for the inspection of plate structures and are well understood. Guided waves also exist in multi-layered plates as well. Energy distributions vary across the thickness of a multi-layer structure depending on the mode and frequency. Hence, a potential way to inspect the bottom layer of a structure is to find modes with sufficient energy in the bottom layer.