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Indexed by:期刊论文

Date of Publication:2010-09-01

Journal:OPTICS AND LASERS IN ENGINEERING

Included Journals:SCIE、EI、Scopus

Volume:48

Issue:9

Page Number:882-887

ISSN No.:0143-8166

Key Words:Laser; Adhesive; Molten pool; Penetration

Abstract:Laser weld bonding (LWB) is a new hybrid technique that combines adhesive bonding with laser seam welding together, and can achieve higher joint strength than adhesive bonding or laser welding individually. Some new physical phenomena have been observed in this welding method, and the phenomena are different from the normal laser welding process, such as a remarkable deeper penetration in LWB than that in laser welding direct (LWD). The adhesive-induced gas can influence the molten pool structure in front of the keyhole, so that less energy is required for laser keyhole through the upper sheet; thus, higher laser power density can interact with the lower sheet, leading to deeper penetration. Simulation comparison experiments are set to indirectly verify these conclusions above. Crown Copyright (c) 2010 Published by Elsevier Ltd. All rights reserved.