Laser hole drilling process studied using laser speckle correlation
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)
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.
Proceedings of SPIE, the International Society for Optical Engineering, ISSN 0277-786X ; 6341
Research subject Experimental Mechanics; Manufacturing Systems Engineering
IdentifiersURN: 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
Speckle 06 : 13/09/2006 - 15/09/2006
Validerad; 2006; 20070410 (ysko)2016-09-302016-09-302017-01-19Bibliographically approved