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서영백,옥철호,김동호,박흥식,전태옥 동아대학교 공과대학부설 생산기술연구소 1998 生産技術硏究所硏究論文集 Vol.3 No.2
This paper was undertaken to do morphological analysis of wear debris on no additive and additive lubricating oil. The lubricating wear test was performed under different experimental conditions using the wear test device was made in our laboratory and wear specimens of the pin on disk type was rubbed in paraffine series base oil by materials, varying applied load, sliding distance, oil additives such as stearine acid, DBDS, TCP. Morphologic character of wear debris is easily distinguished by four shape parameter(50% volumetric diameter, aspect, roundness and reflectivity). As the applied load sliding distance increase, size and shape of wear debris was complexed, but reflectivity was decreased, a large wear debris was apt to be oxidezed.
서영백,박흥식,전태옥,Seo, Yeong-Baek,Park, Heung-Sik,Jeon, Tae-Ok 대한기계학회 1997 大韓機械學會論文集A Vol.21 No.5
Microscopic examination of the morphology of wear debris is an accepted method for machine condition and fault diagnosis. However wear particle analysis has not been widely accepted in industry because it is dependent on expert interpretation of particle morphology and subjective assessment criteria. This paper was undertaken to analyze the morphology of wear debris for machine condition diagnosis of the lubricated moving surfaces by image processing and analysis. The lubricating wear test was performed under different sliding conditions using a wear test device made in our laboratory and wear testing specimen of the pin-on-disk-type was rubbed in paraffine series base oil. In order to describe characteristics of debris of various shape and size, four shape parameters (50% volumetric diameter, aspect, roundness and reflectivity) have been developed and outlined in the paper. A system using such techniques promises to obviate the need for subjective, human interpretation of particle morphology in machine condition monitoring, thus to overcome many of the difficulties in current methods and to facilitate wider use of wear particle analysis in machine condition monitoring.
서영백,이충엽,박흥식,전태옥 동아대학교 공과대학부설 생산기술연구소 1998 生産技術硏究所硏究論文集 Vol.3 No.2
This paper was undertaken to do tribology characteristics on oiliness agent adn extreme pressure agent. The lubricating wear test was performed under different experimental conditions using the wear test device was made in our laboratory and wear specimens of the pin on disk type was rubbed on paraffine series base oil by materials, varying applied load, sliding distance, oil additives such as stearine acid, DBDS, TCP, DBDS and TCP have a role of extreme pressure agent but a role of absorbed film of stearic acid decrease in high load. As applied load increase, in no additive lubricating oil, friction coefficient of three test piece is decreased by decrease in oil film thickness and viscous damping. But friction coefficient in STS304 has bigger value than SM45C and STB2 for work hardening in austenite.
서영백,김동호,이광영,박흥식,전태옥 동아대학교 공과대학부설 생산기술연구소 1998 生産技術硏究所硏究論文集 Vol.3 No.1
Microscopic examination for the morphological estimation of wear debris on the oil-lubricated moving system is an accepted method for machine condition and fault diagnosis. However wear particle analysis has not been widely accepted industry because it is dependent on expert interpretation of particle morphology and relies on subjective assessment criteria. This paper was undertaken to estimate the morphology of wear debris on the oil-lubricated moving system by computer image analysis. The wear test was performed under different sliding conditions using a wear test device made in our laboratory and wear testing specimen of the pin-on-disk-type was rubbed in paraffine series base oil. In order to describe characteristics of debris of various shape and size, four shape parameters (50% volumetric diameter, aspect, roundness and reflectivity) have been developed and outlined in the paper. A system using such techniques promises to obviate the need for subjective, human interpretation of particle morphology in machine condition monitoring.