차량용 피스톤로드의 열처리경도에 따른 초음파특성 평가 (Evaluation of Ultrasonic Characterization of Hardness after Heat Treatment of Piston Rods for Use of Vehicles)

서지정보

· 발행기관 : 한국생산제조학회
· 수록지 정보 : 한국생산제조학회지 / 23권 / 1호 / 48 ~ 55페이지
· 저자명 : 임광희, 백충걸, 정옥수, 황용훈, 권상혁, 김현구, 이형호, 우용득, 장계림, 정종안

초록

Many techniques are available for destructive and nondestructive measurementof mechanical hardness. The ultrasonic method could be widely applicable as a nondestructive technique. Many studies have examined how changes in the mechanical hardness affect the longitudinal velocity of ultrasonic waves. This approach aimsto estimate the overall velocity variations in specimens. However, proper nondestructive examination techniques are neededas effective tools for analyzing the effects of heat treatment on the surface of the specimens. Therefore, in this study, the effect on the hardness of piston rods was nondestructively measuredusing surface ultrasonic waves. The hardness after heat treatment was investigated at various depthsin the specimens, and the velocity of the surface ultrasonic waves was measuredwith respect to the hardness of the piston rods. In addition, finite element method simulations were performed to confirm the behavior of the waves.

영어초록

Many techniques are available for destructive and nondestructive measurementof mechanical hardness. The ultrasonic method could be widely applicable as a nondestructive technique. Many studies have examined how changes in the mechanical hardness affect the longitudinal velocity of ultrasonic waves. This approach aimsto estimate the overall velocity variations in specimens. However, proper nondestructive examination techniques are neededas effective tools for analyzing the effects of heat treatment on the surface of the specimens. Therefore, in this study, the effect on the hardness of piston rods was nondestructively measuredusing surface ultrasonic waves. The hardness after heat treatment was investigated at various depthsin the specimens, and the velocity of the surface ultrasonic waves was measuredwith respect to the hardness of the piston rods. In addition, finite element method simulations were performed to confirm the behavior of the waves.

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