Journal of Welding and Joining
- Volume 9 Issue 1
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- Pages.40-47
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- 1991
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- 2466-2232(pISSN)
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- 2466-2100(eISSN)
A study of cumulative damage of carbon steel(SM45C) welded joint by block load with p-distribution
P 분포 블록하중에 의한 용접부의 누적피노 손상에관한 연구
Abstract
The most fatigue tests carried out under the either stress or strain control, but machines and structures had taken variable stress. This variable stress was treated as statistics based on p-type distributions. In this paper, the cumulative fatigue damage of SM45C round bar specimens having a center hole resulting from block loading with p-distributions in rotating bending conditions, is presented. The value of p was changed in the range from 0.25 to 1; 0.25, 0.5, 0.75, 1. The following conclusions were obtained through the constant stress amplitude experiments and the block loading experiments. (1) In constant loading test, fatigue life was affected by cyclic rate. From experimental data, N
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