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피로하중에 의한 NITINOL의 기계적 성질의 변화
Change of mechanical properties in Nitinol by fatigue load

Korean Journal of Orthodontics 1993년 23권 4호 p.725 ~ 734

소속 상세정보

하국봉 손우성

KMID : 0361919930230040725

Abstract

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(1×10E4, 2×10E4, 3×10E4, 4×10E4, 5×10E4, 1×10E5 were applied to 0.0017×0.025 inch Nitinol.
@ES The results obtained were as follows;
@EN 1. Applied load increased as fatigue cycle increased in three point bending test.
2. Maximum tensile strengh and elongation decreased as fatigue cycle increased.
3. In SEM, brittle fracture pattern was increased when fatigue cycle increased.