X線による応力測定法に関する研究 : sin^2 ψ法, 求める応力値の照射面積・分解能などによる影響

概要

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Several basic problems concerning the stress measurement by X-ray remain to be further investigated for example, the correspondence of the stress measured by X-ray method to that obtained by mechanical means. The authors had found out the practical significance of appling sin^2 ψ method (Christenson and Rowland method) to stress measuring, and examined of the effect of radiation area on the stress value using both the film and counter method in plate specimens of 0.07% and 0.55% carbon steels. 1) Stresses measured by the film showed sufficiently exact values under the test condition employed by the authors. Measured stresses were in fairly good agreement with the mechanically obtained ones. 2) In the case of counter method applied to the heat-treated specimens of carbon steel, the value of cosec θ_ψ was found to be deviated from the theoretical one for the oblique incidence of 45° owing to the absorption of X-ray by materials, and asymmetricity of diffracted X-rays. This tendency becoms more conspicuous as the radiation area is increased. Therefore, sin^2ψ method should be used in this case.
一般社団法人日本機械学会の論文
1963-04-25