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논문 기본 정보

자료유형
학술대회자료
저자정보
양영규 (트리플씨메디칼) 원성연 (트리플씨메디칼) 김철웅 (고려대학교)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2010년도 추계학술대회 강연 및 논문 초록집
발행연도
2010.11
수록면
4,116 - 4,121 (6page)

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The Electrosurgical Knee Wand (EKW) offers a radio frequency ablation method using plasma for coagulation or removal of targeted tissues inside of knees. However, it is necessary to develop an actuator which is controllable in human body in order to improve accessability and accuracy for ablation of tissues and simultaneously prevent any excess costs using the actuators with rigid heads. Therefore, in this study, we established a Tensile SMA Spring model, which would maximize shape memory effect of the actuator from Shape Memory Alloy wires, and performed a dynamic characteristic test for practical application. In addition, the test was elaborated by considering variations in design factors of the model for observing its design control and effect. Specifically, the variations were diameters of SMA wire and internal and external diameters of SMA springs. They were rapidly cooled off after 30-minute heat treatment at 500℃. The experiment was also conducted to evaluate displacement of the SMA springs with their free length of 4~5 ㎜ and extended length when it was fixed on an acrylic plate parallel to the force gauge. For temperature control, the current with a pre-established programmable DC power supply was injected. We measured temperature, force and displacement as the shape of the SMA spring was restored with the current injection. The temperature data, 1Hz, was measured with a thermometer, restoring force, 10㎐, with a force gauge and actuator's stroke, 10㎐, with a digital displacement sensor.

목차

Abstract
1. 서론
2. SMA Tensile Spring 제작 및 실험방법
3. SMA tensile spring의 회복력 및 행정거리의 평가
4. 결론
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UCI(KEPA) : I410-ECN-0101-2012-550-003944405