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Arakawa, S.
Transportation Equipment and Infrastructure Division, Nippon Sharyo, Ltd., 1-1 Sanbonmatsu-cho, Atsuta-ku, Nagoya 456-8691
Civil Engineering, Building, Construction & Architecture

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Evaluation of Crack Initiation Points of Load-Carrying Cruciform Welded Joints Based on Effective Notch Stress Approach Kinoshita, K.; Arakawa, S.
Civil Engineering Dimension Vol. 16 No. 2 (2014): SEPTEMBER 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (501.802 KB) | DOI: 10.9744/ced.16.2.68-74

Abstract

For fatigue assessment, recently effective notch stress (ENS) approach is  accepted as a valid alternative to fracture mechanics approaches in Japan. However, at least one study showed that the fatigue assessment at weld root of load-carrying cruciform welded joints based on ENS approach does not capture the influence of plate thickness, weld size and weld penetration. Consequently, there are still uncertainties about the fatigue assessment. This paper discusses the evaluation method of the joints based on ENS approach. Effects of weld size, weld penetration, and plate thickness on ENS are determined by using fine-meshed FEM analyses. Validity of this method is determined by comparing the evaluation results with fracture mechanics approach. It is shown that results from this method are comparable to those of the previous study and the results seem to be conservative when ratio of weld penetration to plate thickness becomes smaller and plate thickness becomes larger.
Co-Authors Kinoshita, K.