Residual Stress Measurement in Spot Welds and the Effect of Fatigue Loading on Redistribution of Stresses Using High Sensitivity Moire´ Interferometry-Reference-Cited by-同舟云学术

Residual Stress Measurement in Spot Welds and the Effect of Fatigue Loading on Redistribution of Stresses Using High Sensitivity Moire´ Interferometry

Published:2000-01-21 Issue:1 Volume:123 Page:132-138
ISSN:0094-4289
Container-title:Journal of Engineering Materials and Technology
language:en
Short-container-title:

Author:

Khanna Sanjeev K.¹,He Canlong²,Agrawal Hari N.³

Affiliation:

1. Dept. of Mechanical Engineering, South Dakota School of Mines & Technology, Rapid City, SD 57701-3995

2. Dept. of Mechanical Engineering, University of Missouri—Rolla, Rolla, MO 65409

3. Durability, CAE Development, Ford Motor Co., Dearborn, MI 48124

Abstract

Residual stress distribution has been determined in spot welds, which are generally used to join mild steel sheets. Various spot weld configurations were investigated using the full-field, experimental, optical technique of high sensitivity moire´ interferometry. These stresses were found to be in the range 250–300 MPa (tensile) in the center and decreased to 40–100 MPa (tensile) at the edge of the weld nugget. Low cycle fatigue loading of the spot weld caused the residual stress to drop in the weld center by about 30 percent and increase at the edges by as much as 100 percent.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/materialstechnology/article-pdf/123/1/132/5799587/132_1.pdf

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