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A study on the fatigue strength characteristics of ship structural steel with gusset welds

机译:角撑板焊接的船舶结构钢疲劳强度特性研究

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ABSTRACT This study aims to assess fatigue property by the static overload and average load in the fillet welded joints which is on the ship structural steel having gusset welds. To this end, a small specimen was made, to which the same welding condition for the actual ship structure was applied, to perform fatigue tests. In this study, a method to simply assess changes in welding residual stress according to different static overload was suggested. By measuring actual strain at the weld toe, the weld stress concentration factor and property which is determined by recrystallization in the process of welding were estimated to investigate the relation between overload and fatigue strength.
机译:摘要本研究旨在通过带有角撑板焊缝的船用结构钢上的角焊缝的静态过载和平均载荷来评估疲劳性能。为此,制作了一个小试样,并对其施加了与实际船体结构相同的焊接条件,以进行疲劳测试。在这项研究中,提出了一种根据不同的静态过载简单评估焊接残余应力变化的方法。通过测量焊趾处的实际应变,估算出焊接应力集中系数和焊接过程中再结晶所确定的性能,以研究过载与疲劳强度之间的关系。

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