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- 저자 : 김경연(G.N.Kim) (검색결과 1 건)
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김경연(G.N.Kim),정재천(J.C.Cheong),김기선(K.S.Kim) 한국자동차공학회 1991 오토저널 Vol.13 No.6
In this study, it is intended to investigate the effect of the grinding conditions such as table feed, down feed, cross feed of residual stress distribution. And this distribution is investigated upon the grinding direction and the its orthogonal direction at ground layers. The material is used carbon steel (SM20C) which usually used to motor axis. And in order to be considered as Bernoulli-Euler beam, the dimension of the specimen is appropriately designed. According as corroiding the ground surface, the residual stress layers are removed and strain which occured on account of unbalance of internal stress is detected by rosette-gate. Through A/D converter and computer, these values are saved and evaluated residual stress by stress-strain relation formula.<br/> Finally, these results are diagrammatized with Auto Cad.<br/> The results obtained are as follows.<br/> As the depth from the ground surface increases in grinding direction and its orthogonal direction, tensile residual stress exists in the surface, and subsequently it becomes compressive residual stress as it goes downward. As the table feed, the cross feed and the down feed increase, maximum residual stress is transformed from the tensile to the compressive.
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