Structural health monitoring using scanning laser vibrometry: I. Lamb wave sensing

WJ Staszewski, BC Lee, L Mallet, FL Scarpa

Research output: Contribution to journalArticle (Academic Journal)peer-review

280 Citations (Scopus)

Abstract

Structural health monitoring using Lamb waves is based on guided waves introduced to a structure at one point and sensed at a different location. Actuation and sensing can be accomplished using various types of transducer. The paper demonstrates a non-contact method for low-frequency Lamb wave sensing. The technique utilizes a laser Doppler velocimeter. Lamb wave responses are enhanced using data smoothing and filtering procedures. The results are validated using classical piezoceramic-based sensing and numerical simulations. The study shows the potential of laser vibrometry for Lamb wave sensing.
Translated title of the contributionStructural health monitoring using scanning laser vibrometry: I. Lamb wave sensing
Original languageEnglish
Pages (from-to)251 - 260
Number of pages10
JournalSmart Materials and Structures
Volume13 (2)
DOIs
Publication statusPublished - Apr 2004

Bibliographical note

Publisher: Institute of Physics

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