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Laser hole drilling process studied using laser speckle correlation
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0003-4879-8261
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
Luleå tekniska universitet.
2006 (English)In: Speckle06: speckles, from grains to flowers ; 13 - 15 September 2006, Nimes, France ; [proceedings] / [ed] Pierre Slangen; Christine Cerruti, Bellingham, Wash.: SPIE - International Society for Optical Engineering, 2006, 63412M- p.Conference paper (Refereed)
Abstract [en]

This paper revisits defocused speckle correlation as a tool for measuring the response in metal sheets during percussion laser drilling processing. For the processing the 4th harmonic Nd:YAG wavelength (266 nm) was used in pulsed mode. It is shown that the method provides a cost efficient and robust alternative to speckle interferometry for the study of the small deformations that appear during laser processing. The accuracy was shown to be in the order of a few tens of μrads for the tilt component being measured which translates to a few nm in deflection when being spatially integrated. In the measurements deflections up to 50 nm was detected on the backside of silver and a copper sheet, respectively.

Place, publisher, year, edition, pages
Bellingham, Wash.: SPIE - International Society for Optical Engineering, 2006. 63412M- p.
Series
Proceedings of SPIE, the International Society for Optical Engineering, ISSN 0277-786X ; 6341
Research subject
Experimental Mechanics; Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-34895DOI: 10.1117/12.695845Local ID: 93396380-e785-11db-8a98-000ea68e967bISBN: 9780819464262 (print)OAI: oai:DiVA.org:ltu-34895DiVA: diva2:1008147
Conference
Speckle 06 : 13/09/2006 - 15/09/2006
Note
Validerad; 2006; 20070410 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-01-19Bibliographically approved

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CiteExportLink to record
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