W J Staszewski et al 2004 Smart Mater. Struct. 13 251 doi:10.1088/0964-1726/13/2/002
Structural health monitoring using scanning laser vibrometry: I. Lamb wave sensing
W J Staszewski1, B C Lee, L Mallet and F Scarpa
Show affiliationsStructural 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.
- PACS
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42.79.Qx Range finders, remote sensing devices; laser Doppler velocimeters, SAR, and LIDAR
02.60.Cb Numerical simulation; solution of equations
77.84.Dy Niobates, titanates, tantalates, PZT ceramics, etc.
- Subjects
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Condensed matter: electrical, magnetic and optical
- Dates
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Issue 2 (April 2004)
Received 20 October 2003, in final form 16 December 2003
Published 4 February 2004
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Structural health monitoring using scanning laser vibrometry: I. Lamb wave sensing
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