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Title: In situ strain and temperature measurement and modelling during arc welding

Abstract

In this study, experiments and numerical models were applied to investigate the thermal and mechanical behaviours of materials adjacent to the weld pool during arc welding. In the experiment, a new high temperature strain measurement technique based on digital image correlation (DIC) was developed and applied to measure the in situ strain evolution. In contrast to the conventional DIC method that is vulnerable to the high temperature and intense arc light involved in fusion welding processes, the new technique utilised a special surface preparation method to produce high temperature sustaining speckle patterns required by the DIC algorithm as well as a unique optical illumination and filtering system to suppress the influence of the intense arc light. These efforts made it possible for the first time to measure in situ the strain field 1 mm away from the fusion line. The temperature evolution in the weld and the adjacent regions was simultaneously monitored by an infrared camera. Finally and additionally, a thermal–mechanical finite element model was applied to substantiate the experimental measurement.

Authors:
 [1];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1185830
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Science and Technology of Welding and Joining
Additional Journal Information:
Journal Volume: 20; Journal Issue: 3; Journal ID: ISSN 1362-1718
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; in situ strain; temperature; arc welding; digital image correlation; FEM

Citation Formats

Chen, Jian, Yu, Xinghua, Miller, Roger G., and Feng, Zhili. In situ strain and temperature measurement and modelling during arc welding. United States: N. p., 2014. Web. doi:10.1179/1362171814Y.0000000270.
Chen, Jian, Yu, Xinghua, Miller, Roger G., & Feng, Zhili. In situ strain and temperature measurement and modelling during arc welding. United States. doi:10.1179/1362171814Y.0000000270.
Chen, Jian, Yu, Xinghua, Miller, Roger G., and Feng, Zhili. Fri . "In situ strain and temperature measurement and modelling during arc welding". United States. doi:10.1179/1362171814Y.0000000270. https://www.osti.gov/servlets/purl/1185830.
@article{osti_1185830,
title = {In situ strain and temperature measurement and modelling during arc welding},
author = {Chen, Jian and Yu, Xinghua and Miller, Roger G. and Feng, Zhili},
abstractNote = {In this study, experiments and numerical models were applied to investigate the thermal and mechanical behaviours of materials adjacent to the weld pool during arc welding. In the experiment, a new high temperature strain measurement technique based on digital image correlation (DIC) was developed and applied to measure the in situ strain evolution. In contrast to the conventional DIC method that is vulnerable to the high temperature and intense arc light involved in fusion welding processes, the new technique utilised a special surface preparation method to produce high temperature sustaining speckle patterns required by the DIC algorithm as well as a unique optical illumination and filtering system to suppress the influence of the intense arc light. These efforts made it possible for the first time to measure in situ the strain field 1 mm away from the fusion line. The temperature evolution in the weld and the adjacent regions was simultaneously monitored by an infrared camera. Finally and additionally, a thermal–mechanical finite element model was applied to substantiate the experimental measurement.},
doi = {10.1179/1362171814Y.0000000270},
journal = {Science and Technology of Welding and Joining},
number = 3,
volume = 20,
place = {United States},
year = {2014},
month = {12}
}

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Cited by: 7 works
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Works referenced in this record:

Current Issues and Problems in Welding Science
journal, July 1992


The Effect of Residual Stresses on the Strain Evolution during Welding of Thin-Walled Tubes
journal, March 2011


In situ neutron diffraction measurements of temperature and stresses during friction stir welding of 6061-T6 aluminium alloy
journal, May 2007

  • Woo, W.; Feng, Z.; Wang, X. -L.
  • Science and Technology of Welding and Joining, Vol. 12, Issue 4
  • DOI: 10.1179/174329307X197548

Studies on in - situ full-field measurement for in-plane welding deformation using digital camera
journal, August 2012


High-temperature digital image correlation method for full-field deformation measurement at 1200 °C
journal, November 2010


A new finite element model for welding heat sources
journal, June 1984

  • Goldak, John; Chakravarti, Aditya; Bibby, Malcolm
  • Metallurgical Transactions B, Vol. 15, Issue 2
  • DOI: 10.1007/BF02667333