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Proceedings Paper

Thin stainless steel sandwich structural panels all welded by laser technology
Author(s): Giuseppe Daurelio; Antonio Domenico Ludovico; Fabio Nenci; Albino Chiasera; Maurizio Guadio
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Paper Abstract

This paper reports the results obtained by employing materials such as austenitic stainless steel (AISI 304) sheets, with different face thicknesses and core geometry's, usually some trapezoidal ones. A ROFIN SINAR C.W.CO2 laser has been used as a fast axial flow source and a 1500 W max power level to weld the many bases of the corrugated cores to the external faces has been utilized. Four different constructional solutions, for the preparation of some new modular structural elements, with one or two beads for each welded base, have been experimented. Each modular structure has sizes 300 mm wide, 700 mm length and 60 mm height. After studying many different mechanical clampings, the best one has been realized. So, eight different constructional solutions and different operative sequences of the welds have been made. All this for evaluating the effect of the weld sequence on the distortion of the panel and for obtaining different localization of the residual stresses on the structural element.

Paper Details

Date Published: 18 August 1997
PDF: 28 pages
Proc. SPIE 3097, Lasers in Material Processing, (18 August 1997); doi: 10.1117/12.281078
Show Author Affiliations
Giuseppe Daurelio, Centro Laser Societa Consortile a.r.l. (Italy)
Antonio Domenico Ludovico, Politecnico di Bari (Italy)
Fabio Nenci, ENEA Casaccia (Italy)
Albino Chiasera, ENEA CRE Clementel (Italy)
Maurizio Guadio, Centro Laser Societa Consortile a.r.l. (Italy)

Published in SPIE Proceedings Vol. 3097:
Lasers in Material Processing
Leo H. J. F. Beckmann, Editor(s)

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