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Sizing of subsurface defects in thin walls using laser ultrasonics
University West, Department of Engineering Science, Division of Automation Systems. (PTW)ORCID iD: 0000-0001-7748-0565
TWI.
2014 (English)Article in journal (Refereed) Submitted
Abstract [en]

Laser ultrasonics is a non-destructive testing technique where a focused laser is used for generating an ultrasound pulse and a second laser is used for detection. This ultrasound pulse is used for detecting surface or near surface defects. A defect will not only reflect the incoming surface wave, but also alter the frequency contents of the transmitted wave. When the detection laser was scanned along the surface, changes in frequency contents of the sound pulse were detected and could be analysed to give information about the diameter of the defect.

Place, publisher, year, edition, pages
2014.
Keywords [en]
Laser ultrasonics, Rayleigh waves, additive manufacturing, defect sizing
National Category
Mechanical Engineering
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-6695OAI: oai:DiVA.org:hv-6695DiVA, id: diva2:747553
Available from: 2014-09-17 Created: 2014-09-17 Last updated: 2023-04-05Bibliographically approved

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Broberg, Patrik

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