Static and fatigue strength of laser-welded lap joints in thin steel sheet

Offering the advantages of high welding speed and low heat distortion, laser welding is an attractive process for joining thin steel sheet. This paper describes an investigation of the static and fatigue strength of laser-welded lap joints in thin steel sheet with different sheet thicknesses and ten...

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Bibliographic Details
Published inWelding international Vol. 11; no. 6; pp. 462 - 467
Main Authors Ono, M, Kabasawa, M, Omura, M
Format Journal Article
LanguageEnglish
Published Cambridge Taylor & Francis Group 01.01.1997
Abington
Subjects
Applied sciences
Exact sciences and technology
Joining, thermal cutting: metallurgical aspects
Metals. Metallurgy
Welding
Welding speed
Welding
Mechanical properties
Steel
Welding conditions
Experimental study
Laser welding
Tensile strength
Fatigue crack
Crack propagation
Weld
Mechanical test
Fatigue strength
Thin sheet
Test method
Fractography
Strength
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Summary:Offering the advantages of high welding speed and low heat distortion, laser welding is an attractive process for joining thin steel sheet. This paper describes an investigation of the static and fatigue strength of laser-welded lap joints in thin steel sheet with different sheet thicknesses and tensile strengths and compares the results with those obtained for spot-welded joints. To evaluate the static strength of the joints, a method for estimation of the joint strength and fracture mode is established. To evaluate the fatigue strength of the joints, the mixed-mode fracture-mechanics criterion of Erdogan and Sih is used, giving good characterisation of the fatigue strength, including that of the spot-welded joints.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0950-7116
1754-2138
DOI:10.1080/09507119709451995