피로하중에 의한 NITINOL의 기계적 성질의 변화

• 영문명: Change of mechanical properties in Nitinol by fatigue load
• 발행기관: 대한치과교정학회
• 저자명: 하국봉(Kook-Bong Ha) 손우성(Woo-Sung Shon)
• 간행물 정보: 『The Korean Journal of Orthodontics』제23권 제4호, 725~734쪽, 전체 10쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1993.12.31

영문 초록

Nitinol wires are now widely used in the orthodontic field because of their unique shape memory effect and superelasticity. But sometimes Nitinol wires are deformed in clinical use. Fatigue load is possible cause of Nitinol deformation. To determine the effect of fatigue load to the mechanical properties of Nitinol, various fatigue cycle(1X10⁴, 2X10⁴, 3X10⁴, 4X10⁴, 5X10⁴, 1X10⁵) were applied to 0.017 X 0.025 inch Nitinol. The results obtained were as follows; 1. Applied load increased as fatigue cycle increased in three point bending test. 2. Maximum tensile strength and elongation decreased as fatigue cycle increased. 3. In SEM, brittle fracture pattern was increased when fatigue cycle increased.

키워드

Nitinol fatigue load