各種試驗片の歪模様

概要

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After Dr.Fry's process, strain figures for various specimens under various loads are shown. A few special points of interest are : 1. Of the specimens under torsion, there are two kinds of strain, one being parallel to the axis of the specimen and the other perpendicular to it. These two kinds of strain are clearly obtained 2. With regard to the strain produced by punching a hole, the material is found to have been strained much farther than generally anticipated, while in the case of drilling a hole the straining condition is quite different from the former case and less extensive. 3. In preparing the etching agent, it is found to m dify the chemical composition according to the condition and amount of strain in order to make more vivid the display of strain figures which are otherwise faint or invisible. A few examples of etching solutions with which satisfactory results obtained are given.
一般社団法人日本機械学会の論文
1928-07-20