6) EXPERIMENTAL STUDY ON THE STRENGTH OF FILLET MELDED JOINTS

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  • すみ肉溶接継手の耐力に関する研究
  • スミニク ヨウセツ ツギテ ノ タイリョク ニ カンスル ケンキュウ

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Abstract

There are many problems to be solued on the strength and load carrying mechanism of fillet melded joints. International test series are schemed by I.I.W since 1960, and we have conducted the part of that test as the national members of I.I.W. This paper concerns to the description and some observation of that test results. Of course we can not draw any definite conclusion from such a limited number of results. It may be interesting, however, to have some impressions on the Japanese test results, and the following is the tentative conclusion of our test results. 1) We have considered 4 factors which would influence the strength of welded joints, that is, type of electrode, length of weld, size of weld, and stress level of the strip. We have found that the type of electrode and the stress level of the strip are the more important factors among them. 2) Weld metal had shown enough ductility, and the experimental formula which predict the strength of joints would be written as follows. For electrode D4320 P_A=(1.35 A_1'+0.78 A_2')σ_W For electrode E6016, D4313 P_<B,W>=(1.0A_1'+0.626 A_2')σ_W where A_1' and A_2' are throat area of the end fillet and side fillet respectively, and σ_W is the tensile strength of weld metal.

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