Ultrasonic guided wave annular array transducers for structural health monitoring

H. Gao, M. J. Guers, J. L. Rose, G. Zhao, C. Kwan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations


The work presented in this paper utilizes the physics of guided wave propagation for structural health monitoring (SHM) transducer designs. Both the theoretical and experimental studies illustrated the importance of guided wave mode selection for SHM applications. Guided wave mode control is realized with an annular array transducer design on a PVDF polymer piezoelectric film. A sample problem on a 1mm thick aluminum plate is presented. Numerical calculations of the wave structures and guided wave power flow distribution inside the plate provide quick guidelines for the wave mode selection in structural health monitoring. Experimental study illustrates the importance of mode control with the comparison of PVDF annular array transducers and PZT ceramic disc transducers. The characteristics of wave mode reflections to defect depth and the defect sizing effect are also discussed in this paper.

Original languageEnglish (US)
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
Subtitle of host publicationVolume 25B
Number of pages7
StatePublished - Mar 6 2006
EventReview of Progress in Quantitative Nondestructive - Brunswick, ME, United States
Duration: Jul 31 2005Aug 5 2005

Publication series

NameAIP Conference Proceedings
Volume820 II
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


OtherReview of Progress in Quantitative Nondestructive
Country/TerritoryUnited States
CityBrunswick, ME

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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