In this paper, the non-linear dynamics of a new Shape Memory Alloy (SMA) actuator that possesses impressive payload lifting capabilities are presented. This actuator consists of 48 SMA wires mechanically bundled in parallel forming one powerful muscle. It was designed to lift up to 45.4 kg (100 lbs.), which is approximately 300 times its weight. This SMA actuator was tested in open loop experim...

As a rst step towards the design of a high frequency, high force, large strain shape memory alloy(SMA) actuator, we model in this work a thermoelectrically cooled thin SMA layer linear actuator. The SMA is subjected to cyclic phase transition between the martensitic and austenitic phases by alternate heating/cooling, achieved with the thermoelectric Peltier e ect of a pair of P/N semiconductors...

A series of thermoelectric responsive shape memory hydro-epoxy (H-EP) composites filled with different contents of graphene were developed and characterized. Compared with traditional actuation materials, these novel shape memory composites exhibit attractive properties, such as light weight, large deformation, good processability and high response speed, making them good candidates for actuato...

Shape memory alloys are well recognized functional and smart materials, which have been exploited to develop intelligent structures and devices in many fields. Of particular importance is its exciting application in the field of biomechanical engineering. In addition, further potential applications of shape memory alloys are being investigated, such as shape memory alloys-based functional compo...

This present paper will study the requirements for development of a new Automatic Rotor Blades Folding (ARBF) system that could possibly solve the availability, compatibility and complexity issue of upgrading a manual to a fully automatic rotor blades folding system of a helicopter. As a subject matter, the Royal Malaysian Navy Super Lynx Mk 100 was chosen as the baseline model. The aim of the ...

Acknowledgements There are many who have made contributions, both directly and indirectly to the completion of this thesis. I would like to name a few. First of all, I would like to sincerely thank my supervisor, Dr. Roy Featherstone, whose help has been enormous and whose enthusiasm has sparked my own in this wonderful work. His ideas and suggestions had frequently created jigsaw puzzles with ...