Predefined peak shape

Peak Search vdth a Predefined Peak Shape... 

Tensile tests were performed (ASTM D 882) at room temperature and at 60°C using Instron 4204 machine equipped with a heating chamber. Shape memory properties were evaluated as follows Samples were stretched at 60°C and a strain rate of 50 mm/min to predefined stretching ratios of 30%, 60% and 100%. Upon completion of stretching, samples were cooled down quickly to room temperature with the aid of a fan. Shape fixity was calculated from the values of sample lengths before and after stretching. Shape recovery test was conducted using a smaller sample cut from the middle section of the stretched specimen. The recovery stress was obtained from the peak value of stress vs. time... 

---