Abstract Soft composite actuators can be fabricated by embedding shape memory alloy (SMA) wires into soft polymer matrices. Shape retention and recovery of these are typically achieved incorporating segments the actuator structure. However, this requires complex manufacturing processes. This work uses multimaterial 3D printing to fabricate with variable stiffness capable recovery. The hinges be...

The purpose of current investigation is to engage two efficient evolvable neuro-evolutionary machines to identify a nonlinear dynamic model for a shape memory alloy (SMA) actuator. SMA materials are kind of smart materials capable of compensating any undergo plastic deformations and return to their memorized shape. This fascinating trait gives them versatility to be applied on different enginee...

Shape memory alloys (SMAs) exhibit unique functionalities due to their superelastic and shape properties. The ability program alter shapes following a thermomechanical stimulus makes them highly important materials for vast number of applications in the aerospace, automotive, biomedical, robotic sectors. Research on SMAs has largely focused metallurgical, mechanical, structural, or phase transf...

A multifunctional panel concept is presented in which a lightweight, structural sandwich panel is able to undergo a reversible change in shape upon application of a localized thermal stimulus. The shape change is effected by metallic (or polymeric) shape memory (SM) face sheet elements, which exploit a “one-way” SM effect only. Unlike other designs, no external or bias forces are required to co...

Alternatives to traditional actuators such as electromagnetic motors are needed in applications where space and weight are limited, for example, laparoscopic medical probes, miniature robotics, and micro-lens positioning systems. We present a family of small light-weight actuators that can be composed out of a basic unit-cell to yield linear, rotational, and surface actuation. The unit-cell act...