Paper Title:
Development of a Visual Monitoring System for Deformation Measuring of Welded Members and its Application
  Abstract

Recently, in the loading tests for steel members, the deformation value is measured by calculating a distance of both cross-heads. This measuring method encounters a test error due to various environmental factors, such as initial slip, etc.. Especially, in the case of welded members, the non-uniform deformation behavior in welded joints is observed because of the effect of welding residual stress and weld metal. This is mainly responsible for a test error and a loss of the reliability for used test instruments. Therefore, to improve the accuracy and the applicability of measuring system, it is necessary to employ a visual monitoring system which can accurately measure the local and overall deformation of welded members. In this paper, to accurately measure a deformation of welded members, a visual monitoring system (VMS) was developed by using three-dimensional digital photogrammetry. The VMS was applied to the loading tests of a welded member. The accuracy and the applicability of VMS was verified by comparing to the deformation value measured by a test instrument (MTS-810). The characteristics of the behavior near a welded joint were investigated by using VMS.

  Info
Periodical
Materials Science Forum (Volumes 580-582)
Edited by
Changhee Lee, Jong-Bong Lee, Dong-Hwan Park and Suck-Joo Na
Pages
557-560
DOI
10.4028/www.scientific.net/MSF.580-582.557
Citation
J.G. Han, K. H. Chang, G. C. Jang, K.K. Hong, S. D. Cho, Y. S. Kim, J.M. Kim, Y.E. Shin, "Development of a Visual Monitoring System for Deformation Measuring of Welded Members and its Application", Materials Science Forum, Vols. 580-582, pp. 557-560, 2008
Online since
June 2008
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Price
$32.00
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