Strain and distortion monitoring during arc welding by 3D digital image correlation

Chen, Jian; Feng, Zhili

doi:10.1080/13621718.2017.1422634

Title: Strain and distortion monitoring during arc welding by 3D digital image correlation

Journal Article · Wed Aug 01 00:00:00 EDT 2018 · Science and Technology of Welding and Joining

DOI:https://doi.org/10.1080/13621718.2017.1422634· OSTI ID:2281405

Chen, Jian ^[1]; Feng, Zhili ^[1]

Oak Ridge National Laboratory, Oak Ridge, TN, USA

A novel three-dimensional (3D) digital image correlation (DIC) approach using a stereovision system was developed to measure the evolution of strain and distortion near the fusion zone during the gas tungsten arc welding process. Unlike the previously reported two-dimensional (2D) DIC approach using a single camera, the 3D DIC method was immune to the out-of-plane displacement and was capable of measuring 3D deformation. Both 2D and 3D DIC approaches in welding applications were based on the utilisation of the novel high-temperature speckle and the pulsed laser illumination plus bandpass filters. However, the speckle pattern was partially specular reflective causing issues in subset matching in the 3D approach. In conclusion, a new algorithm and experimental procedure was incorporated to solve this problem.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 2281405

Alternate ID(s):: OSTI ID: 1468267

Journal Information:: Science and Technology of Welding and Joining, Journal Name: Science and Technology of Welding and Joining Vol. 23 Journal Issue: 6; ISSN 1362-1718

Publisher:: SAGE PublicationsCopyright Statement

Country of Publication:: United Kingdom

Language:: English

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Cited by: 14 works

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Web of Science

References (7)

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