G030053 ディスクグラインダーによる表面機械加工を施したSUS316Lステンレス鋼に対するキャビテーションピーニング層の渦電流法による評価([G03005]材料力学部門一般セッション(5):ステンレス鋼の疲労)

概要

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For the use of structural components, most of the surface of austenitic stainless steel, JIS SUS316L, was ground to make a flat surface. When the grinding is conducted, tensile residual stress is induced at the surface. Introduction of the tensile residual stress is one of cause of stress corrosion cracking. To prevent the stress corrosion cracking, peening is conducted to introduce compressive residual stress. However, the surface roughness of the ground stainless steel treated after peening is seldom varied. Thus, the peening intensity treated after peening should be evaluated in case of the ground stainless steel. In the present report, to establish the non-destructive and relatively short-time evaluating method of the peening intensity, ground austenitic stainless steel using a disk grinder peened by cavitation peening is evaluated using an eddy current method with coil scanning. In results, the proper coil for the evaluation of ground stainless steel is existed, and the peened material can be evaluated by the eddy current method.
一般社団法人日本機械学会の論文
2011-09-11