Abstract

The photoelastic model material with shape memory effect and the molding processes for the material are developed in this research. The matrix and fiber of the photoelastic model material developed in this research are epoxy resin (Araldite to hardner 10 to 3 (weight ratio)) and wire of $Ti_50-Ni_50$ shape memory alloy, respectively. It is called Ti50-Ni50 Shape Memory Alloy Fiber Epoxy Composite $(Ti_50-Ni_50SMA-FEC).$ Ti50-Ni50 SMA-FEC is satisfied with the requirements of the photoelastic model material and can be used as a photoelastic model material. The maximum recovering strain of $Ti_50-Ni_50$SMA-FEC is occurred at $80^{\circ}C$ in any prestrain of $Ti_50-Ni_50$ shape memory alloy fiber and in any fiber volume ratio. Recovering strain(force) is increased with the increment of the prestrain and the fiber volume ratio. The best prestrain of $Ti_50-Ni_50$SMA-FEC is 5% for the recovering force among 1%, 3%, 5%.

Keywords

• Photoelastic Model Material;
• Shape Memory Effect;
• Ti50-Ni50 Shape Memory Alloy;
• Ti50-Ni50 Shape Memory Alloy Fiber Epoxy Composite;
• Recovering Strain;
• Prestrain;
• Fiber Volume Ratio;
• Stress Fringe Value;
• Elastic Modulus of Fiber Direction

• 광탄성 모델재료;
• 형상기억효과;
• 회복변형률;
• 형상기억합금;
• 형상기억합금 에폭시 복합체;
• 초기변형률;
• 파이버 체적비율;
• 응력프린지치;
• 파이버방향의 탄성계수;