ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Recently, in the loading tests for steel members, the deformation value is measured bycalculating a distance of both cross-heads. This measuring method encounters a test error due tovarious 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 weldingresidual stress and weld metal. This is mainly responsible for a test error and a loss of the reliabilityfor used test instruments. Therefore, to improve the accuracy and the applicability of measuringsystem, it is necessary to employ a visual monitoring system which can accurately measure the localand 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 appliedto the loading tests of a welded member. The accuracy and the applicability of VMS was verified bycomparing to the deformation value measured by a test instrument (MTS-810). The characteristicsof the behavior near a welded joint were investigated by using VMS
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.580-582.557.pdf
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