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:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (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. https://doi.org/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. https://doi.org/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 = {Fri Dec 26 00:00:00 EST 2014},
month = {Fri Dec 26 00:00:00 EST 2014}
}
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Works referencing / citing this record:
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