Experimental measurement of biaxial thermal stress fields caused by arc welding

被引：21

作者：

Coules, H. E. ^{[1
]}

Colegrove, P. ^{[1
]}

Cozzolino, L. D. ^{[1
]}

Wen, S. W. ^{[2
]}

机构：

[1] Cranfield Univ, Welding Engn Res Ctr, Cranfield MK43 0AL, Beds, England

[2] Tata Steel R, D&T, Swinden Technol Ctr, Rotherham S60 3AR, S Yorkshire, England

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2012年 / 212卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

Welding; Thermal stress; Residual stress; In-process measurement; GMAW; MIG; Strain gauge; Digital image correlation; RESIDUAL-STRESSES; DISTORTION; TRANSIENT; STEEL; THIN;

D O I：

10.1016/j.jmatprotec.2011.12.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The strain field within thin steel plates during gas metal arc welding has been studied using resistance strain gauges and digital image correlation, allowing the initial formation of stresses around the weld seam to be observed. Major features of the transient stress field have been identified, and are explained with reference to the underlying thermal and mechanical processes. A comparison of stresses occurring during bead-on-plate and butt welding shows they are very similar. The assumptions and limitations associated with determination of the stress state are addressed, and the application of such methods to the problem of reducing welding residual stresses is discussed. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：962 / 968

页数：7

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