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A study on thermoelastic generation of narrowband ultrasonic lamb waves using a pattern source

Authors: Geo Davis (Indian Institute of Technology Madras) , Krishnan Balasubramaniam (Indian Institute of Technology Madras) , Prabhu Rajagopal (Indian Institute of Technology Madras) , Suresh Palanisamy (Swinburne University of Technology; Defence Materials Technology Centre) , Romesh Nagarajah (Swinburne University of Technology)

  • A study on thermoelastic generation of narrowband ultrasonic lamb waves using a pattern source

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    A study on thermoelastic generation of narrowband ultrasonic lamb waves using a pattern source

    Authors: , , , ,

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Abstract

Guided ultrasonic waves are attractive for inspection of plate-like components that are produced by additive manufacturing. Recently, research has been focused on techniques that can perform non-contact testing and carry out an online inspection layer by layer while the component is being fabricated. We demonstrate a non-contact technique for generation of narrowband ultrasonic waves in an additively manufactured component using a spatial array illumination source that can be integrated onto the component. The wavelength-matched method enables the generation of specific Lamb wave modes which are detected using a two-wave mixing based interferometric technique.

How to Cite:

Davis, G. ., Balasubramaniam, K. ., Rajagopal, P. ., Palanisamy, S. . & Nagarajah, R. ., (2019) “A study on thermoelastic generation of narrowband ultrasonic lamb waves using a pattern source”, Review of Progress in Quantitative Nondestructive Evaluation .

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Published on
2019-12-03

Peer Reviewed

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