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Holographic measurement of distortion during laser melting: Additive distortion from overlapping pulses
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling. Westinghouse Electric Sweden AB, Västerås.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling.ORCID-id: 0000-0003-4265-1541
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling.
Dalco Elteknik AB, Östersund.
Vise andre og tillknytning
2018 (engelsk)Inngår i: Optics and Laser Technology, ISSN 0030-3992, E-ISSN 1879-2545, Vol. 100, s. 1-6Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Laser - material interactions such as welding, heat treatment and thermal bending generate thermal gradients which give rise to thermal stresses and strains which often result in a permanent distortion of the heated object. This paper investigates the thermal distortion response which results from pulsed laser surface melting of a stainless steel sheet. Pulsed holography has been used to accurately monitor, in real time, the out-of-plane distortion of stainless steel samples melted on one face by with both single and multiple laser pulses. It has been shown that surface melting by additional laser pulses increases the out of plane distortion of the sample without significantly increasing the melt depth. The distortion differences between the primary pulse and subsequent pulses has also been analysed for fully and partially overlapping laser pulses.

sted, utgiver, år, opplag, sider
Elsevier, 2018. Vol. 100, s. 1-6
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URN: urn:nbn:se:ltu:diva-66009DOI: 10.1016/j.optlastec.2017.09.053ISI: 000417669700001Scopus ID: 2-s2.0-85030758159OAI: oai:DiVA.org:ltu-66009DiVA, id: diva2:1147967
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Validerad;2017;Nivå 2;2017-10 -09 (andbra)

Tilgjengelig fra: 2017-10-09 Laget: 2017-10-09 Sist oppdatert: 2017-12-28bibliografisk kontrollert

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Haglund, PeterFrostevarg, JanPowell, JohnKaplan, Alexander

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