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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)
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.
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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.(0).