Title

Weld geometry and tensile strength in laser welded thin sheet metals

Authors

Authors

J. Du; J. Longobardi; W. P. Latham;A. Kar

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Sci. Technol. Weld. Join.

Keywords

TEMPERATURE PROFILES; SCANNING LASER; BEAM; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering

Abstract

Weld geometries and their effects on the ultimate tensile strength (UTS) of welded specimens were studied experimentally for type 316 stainless steel sheets. Bead on plate welding with 0.1 and 0.2 mm thick workpieces and lap welding with 0.1 mm thick workpieces were carried out. The results showed that the strength of lap welds is influenced by the weld geometry to a large extent. A three-dimensional quasi-steady state heat conduction model was developed to understand the heat flow mechanism during laser welding of sheet metals of finite thickness. The temperature distribution and weld geometry were calculated using the mathematical model and the theoretical results were found to compare well with experimental data. More energy is used to produce melt pools in thinner workpieces than in thicker ones. The model can be used to select suitable process parameters to achieve a predetermined UTS by controlling the weld geometry.

Journal Title

Science and Technology of Welding and Joining

Volume

5

Issue/Number

5

Publication Date

1-1-2000

Document Type

Article

Language

English

First Page

304

Last Page

309

WOS Identifier

WOS:000165478000005

ISSN

1362-1718

Share

COinS