Shape recovery force of TiNi fiber reinforced composite by electric heating

The shape-memory effect of shape-memory alloy (SMA) and the character of the super elasticity are common and effective in today's usage. This paper advances these characteristics by discussing the research of an intelligent composite which functions in a wide-ranging ambient conditions TiNi type SMA fiber was used in the experiment and the embedded test piece was used in a polymer matrix. The influence factor of the actuator function by the shape-memory effect was evaluated in real-time by measuring the length change of the test piece during electric resistance heating. Using composite materials with the electric heating method resulted in a quantitative understanding of the primary factor influencing the shape recovery force. It has been understood that the shape recovery force is greatly influenced by the ambient temperature to which the composite material is applied, and this paper describes detailed information for the best composite materials and their condition characteristic mechanical control by the electric heating.