円筒鋼材の残留応力の測定について : Sach's法で求められた残留応力分布とX線応力測定法で求められた表面応力の値との比較

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Sachs' method is generally used as a means to explore the residual stress distribution of various cylindrical steel, but this method is practically inapplicable to the steel products, as it is a destructive method. This is a serious drawback from a practical viewpoint. It is generally said that some kind of residual stress affects the fatigue strength of machine parts. Therefore, it is particularly desirable to resort to a non-destructive method in order to explore the residual stress distribution inside the steel that forms machine parts. As one of the non-destructive methods, there is stress measurement by X-rays, and the surface stress of any product can be measured directly by this means. But the stress measurement by X-rays alone is not adequate yet to know the value of residual stress inside cylindrical steel with the phase transformations in consideration. If the value of the surface residual stress is obtained by the X-ray method and is used as a measure of quantitative check of such calculation results, such a calculation method will have practical utility. But it is sometimes necessary to use Sachs' method to ascertain experimentally the truth of the result reached by the X-ray method. What is the relation then between the surface stress value obtained by the X-ray method and the stress distribution obtained by Sachs' method? Is there good agreement between both the results obtained by X-rays and Sachs' method?
社団法人日本材料学会の論文
1963-12-15

円筒鋼材の残留応力の測定について : Sach's法で求められた残留応力分布とX線応力測定法で求められた表面応力の値との比較

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