板の残留応力測定における一改良について

概要

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The residual stresses in a plate have been measured in general by removing thin layers successively from the surface of one side and measuring the change in the curvature of the specimen caused by this removing. With this method, the distribution of the residual stresses from the upper surface to the layer near the bottom surface can be measured, but the stresses near the bottom surface can only be measured very obscurely, and the stresses at the bottom surface can not be obtained at all. The authors proposed a new method of obtaining stresses at both sides exactly using only one specimen. By the new method one surface of the specimen is to be removed layer by layer as usual almost to the middle surface. Then, the other surface is to be removed layer by layer, but in the latter case, the stresses should be corrected, because while thin layers are removed from one side, a part of the stresses escape from the remaining part. The residual stresses were measured actually by this new method, and the superiority of this new method was verified. The accuracy of this method is also discussed.
社団法人日本材料学会の論文
1956-08-15