An investigation on wedge waves and the interaction with a defect using aquantitative laser ultrasound visualization system

I. H. Liu*, C. H. Yang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Scopus citations

Abstract

Wedge waves (WW) are guided acoustic waves propagating along wedge tipswith their energy tightly confined near the wedge tip. Antisymmetric flexural(ASF) modes are WWs with their particle motion antisymmetric about the mid-planebi-sectioning the apex angle. Machine tool blades exhibit typical wedge-shapedtips where defects are very likely to exist and call for nondestructivecharacterization. Due to the exhibited wedge shape, ASF modes are good candidatefor probing the defects along the wedge tip. A quantitative laser ultrasoundvisualization system (QLUVS) is employed to investigate the interactionbehaviors of ASF mode propagating along a damaged wedge tip. The QLUVS uses apulsed laser generate acoustic waves which are then detected with apiezoelectric transducer. By scanning the generating laser together with the aidof reciprocal theorem, dynamic behaviors of ASF modes encountering the defectcan be reconstructed.

Original languageEnglish
Title of host publication2010 IEEE International Ultrasonics Symposium, IUS 2010
Pages817-820
Number of pages4
DOIs
StatePublished - 2010
Externally publishedYes
Event2010 IEEE International Ultrasonics Symposium, IUS 2010 - San Diego, CA, United States
Duration: 11 10 201014 10 2010

Publication series

NameProceedings - IEEE Ultrasonics Symposium
ISSN (Print)1051-0117

Conference

Conference2010 IEEE International Ultrasonics Symposium, IUS 2010
Country/TerritoryUnited States
CitySan Diego, CA
Period11/10/1014/10/10

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