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 contribution | Structural health monitoring using scanning laser vibrometry: I. Lamb wave sensing |
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Original language | English |
Pages (from-to) | 251 - 260 |
Number of pages | 10 |
Journal | Smart Materials and Structures |
Volume | 13 (2) |
DOIs | |
Publication status | Published - Apr 2004 |