하중 트레이닝을 통한 형상기억합금의 특성 실험과 거동 전산 모사

다국어 초록 (Multilingual Abstract)

In this study, we observe the application of shape memory alloy(SMA) into smart structures for repeatable actuation, because SMA changes its material properties and characteristics progressively under cyclic loading conditions and finally reaches stable path(state) after a certain number of stress/temperature loadingunloading cycles, so called 'training'. In this paper, SMA wires that have been in a stable state through the training are used. Stress-strain curve of the SMA wire at different temperature levels are measured. In addition, we observe other important effects such as the rate effect according to strain rates for rapid actuation response. The current work presents the experimental test using SMA wire after training completion by mechanical cycling. Through these tests, we measure the characteristics of SMA. With the estimated SMA properties and effects, we compare the experimental results with the simulation results based on the SMA constitutive equations.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 형상기억합금 인장 특성실험
• 3. 거동 전산 모사
• 4. 결론
• 후기
• 참고문헌