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정협재(Hyup Jae chung),이경엽(Kyong Yop Rhee) 한국생산제조학회 2008 한국생산제조시스템학회 학술발표대회 논문집 Vol.2008 No.10
The heat acupuncture therapy is widely applied as it has useful efficacies. It influences the body system by affecting the autonomic nerve and internal secretion system. However, the heat-acupuncture therapy often has harmful side effects in which a patient gets a burned skin because the needle temperature istoo high. In this research, heat-acupuncture needle was coated with Al2O3 by applying a plasma spray coating method to prevent a skin bum. The heat conduction experiment results showed that the surface temperature of needle decreased as the needle was coated with Al2O3. The surface temperature of uncoated needle was about 48℃, while that of needles coated with Al2O3 was about 39℃.
양훈철(Hoon-chul Yang),최홍석(Hong-seok Choi),정협재(Hyup-jae Chung) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
An articulated robot is being increasingly used in the industrial and service fields in order to improve human life as well as to increase operating efficiency. In this type of robot, operating mechanism is so complicated that the components suffered severe loading conditions. In particular, a variety of operating modes such as torsion, bending and tension, which results in the breakage of a conductor, is applied to the cable that supplies the robot with electric power. Therefore, proper design for this cable has been one of the important issues for improving the durability with respect to the various operating modes. In this study, the effect of the filler material and the cabling pitch on the durability under torsion loading condition will be discussed. For this, numerical simulation using a CableCAD software was conducted to evaluate the tension load which affects on durability under torsion loading condition. The durability of designed cables is also evaluated by a torsion tester. As a result of the simulation and experiment, durability based on the torsion can be improved by employing softened filler material and reduced cabling pitch.
정협재,이경엽 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-
The heat acupuncture therapy is widely applied as it has useful efficacies. It influences the body system by affecting the autonomic nerve and internal secretion system. However, the heat-acupuncture therapy often has harmful side effects in which a patient gets a burned skin because the needle temperature istoo high. In this research, heat-acupuncture needle was coated with Al2O3 by applying a plasma spray coating method to prevent a skin bum. The heat conduction experiment results showed that the surface temperature of needle decreased as the needle was coated with Al2O3. The surface temperature of uncoated needle was about 48℃, while that of needles coated with Al2O3 was about 39℃.