University of Oulu

Markku Keskitalo, Mikko Hietala, Kari Mäntyjärvi, The normal and shear strength properties of laser lap weld, Procedia Manufacturing, Volume 36, 2019, Pages 224-231, ISSN 2351-9789,

The normal and shear strength properties of laser lap weld

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Author: Keskitalo, Markku1; Hietala, Mikko1; Mäntyjärvi, Kari1
Organizations: 1University of Oulu, Kerttu Saalasti institute, Pajatie 5, 85500 Nivala
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1 MB)
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Language: English
Published: Elsevier, 2019
Publish Date: 2020-02-12


The study was aimed to clarify the shear strength and the normal strength properties of the lap joint. The welds were characterized with respect to hardness, tensile and fatigue properties. The test materials of this study were low strength carbon steel (LSS) and ultra high strength wear resistant steel (UHSS). The shear strength, perpendicular strength and fatigue resistance of the lap joint laser weld was determined by tensile and fatigue tests. The shear strength of the LSS weld was higher than the strength of the base material. The shear strength of UHSS weld was higher than the LSS weld. However, compared to strength of the base material of the UHSS the weld was weaker even though the weld was harder than the base material. The normal strength of the UHSS and LSS welds was over two times higher than the shear strength of the same welds.

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Series: Procedia manufacturing
ISSN: 2351-9789
ISSN-E: 2351-9789
ISSN-L: 2351-9789
Volume: 36
Pages: 224 - 231
DOI: 10.1016/j.promfg.2019.08.029
Host publication: 17th Nordic Laser Materials Processing Conference - NOLAMP17
Conference: Nordic Laser Materials Processing Conference
Type of Publication: A4 Article in conference proceedings
Field of Science: 216 Materials engineering
Funding: The authors would like to acknowledge the financial support received from the European Union (European regional development fund), City of Nivala, Nivala industrial park Ltd and NIHAK Nivala-Haapajarvi region registered association. The industrial companies Wärtsilä Finland Oyj, SSAB Europe Oyj, HT Laser Oy, Randax Oy, Konestar Oy, Filtra Group Oy and Miilux Oy have participated for this research work
Copyright information: © 2019 The Authors. Published by Elsevier B.V.