φ角変化に基づいたX線応力測定による応力こう配の測定(<小特集>X線材料強度小特集)

概要

論文の詳細を見る
A new principle of X-ray stress evaluation for a sample with steep stress gradient has been prosed. The feature of this method is that the stress is determined by using so-called φ-method based on the change of φ-angle and thus has no effect on the penetration depth of X-rays. The procedure is as follows; firstly, and average stress within the penetration depth of X-rays is determined by changing only φ angle under a fixedφangle, and then a distribution of the average stress us. the penetration depth of X-rays is detected by repeating the similar procedure at different φ angles. The following conclusions were found out as the result of residual stress measurements on a carbon steel of type S 55 C polished by emery paper. This method is practical enough to use for a plane stress problem And the assumption of a linear stress gradient adopted in the authors' previous investigations is valid. In case of a triaxial stress analysis, this method is effective for the solution of three shearing stresses. However, three normal stresses can not be solved perfectly except particular φ angles.
社団法人日本材料学会の論文
1985-06-15