欠陥を有する溶接部の耐力と変形能力に関する研究 : 実験計画法に基づく分散分析的考察

概要

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The strength and deformability of defective welded joints may be influenced by many factors such as size and location of defects, type of joints, temperature and so on. Factorial Experiment is, in that case, one of useful means to select what factors are influential or not. Test series I and II are carried out by means of Factorial Experiment, those factors are statistically analysed, and followings can be concluded from this research. (1) Following experimental factors must be considered in the assessment of the influence of weld defect of the quasi-static properties of cross joints. a) The dimensions, especially the width of the specimens. b) The defect location, i. e., whether a weld defect locates at the edge or at the center of the specimen. c) The geometric shape factors, such as rations of defect length to plate width, and of defect height to plate thickness. (2) Following experimental factors can be negligible when cross joints are fractured from weld defect in ductile manner. a) The welding procedure. b) The steel grade. (SM 50 or SM 58) c) The loading condition. (3) The adverse influence of weld defect on the quasi-static properties of welded joints is more pronounced for butt joints than for cross joints.
社団法人日本建築学会の論文
1985-04-30