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Thickness Effects on the Fatigue Strength of Butt Welded Specimens using SM520C-TMC Steel  

Kim, Kyoung Nam (충북대학교 대학원)
Jung, In Su (충북대학교 대학원)
Hwang, Nak Yeon (충북대학교 대학원)
Jung, Kyoung Sup (충북대학교 구조시스템공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.16, no.6, 2004 , pp. 847-855 More about this Journal
Abstract
The criterion or specification on fatigue design has been generally based on fatigue strength curve derived by tests on specimens with varying thickness (10-30mm). Making the plate thicker, however, also decreases fatigue strength. It has been noted from the test results and the results of the analysis by fracture mechanics that the effect of thickness cannot be bypassed. From the several fatigue strength curves of specimen tests, modification of fatigue strength on plate thickness has been proposed. In this study, fatigue tests on SM520C-TMC were carried out, and the effects of thickness were evaluated. Finally, in consideration of the thickness, the modification of fatigue strength was derived. Comparing the results of this paper with those of previous studies, an outline of the behavior obtained is similar to previous ones, but the rate of decrease is smaller.
Keywords
SM520C-TMC; Fatigue test; Fatigue strength curve; Thickness effect; Modification;
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