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Poly(3-Methylthiophene) Electrochemical Actuators Showing Increased Strain And Work Per Cycle At Higher Operating Stresses, Van-Tan Truong, Philip G. Whitten, Jie Ding, Binbin Xi, Geoffrey M. Spinks, G G. Wallace
Poly(3-Methylthiophene) Electrochemical Actuators Showing Increased Strain And Work Per Cycle At Higher Operating Stresses, Van-Tan Truong, Philip G. Whitten, Jie Ding, Binbin Xi, Geoffrey M. Spinks, G G. Wallace
Faculty of Engineering - Papers (Archive)
Conducting polymers, such as polythiophenes, are promising low voltage actuator materials. The performance of these materials has improved significantly in recent years. A remaining problem, however, is the significant decline in the actuation strain produced when the external stress is increased. Using a poly(3-methylthiophene) actuator in an ionic liquid electrolyte it is shown that the isotonic actuation actually increases with increasing applied stress. The work output per cycle consequently increases at higher stresses, which is very desirable for practical devices. Although theoretically predicted, these results are the first demonstration of the increased actuator performance at higher operating stresses. The actuation …
The Application Of Linear Elastic Fracture Mechanics To Optimize The Vacuum Heat Treatment And Nitriding Of Hot-Work Tool Steels, V. Leskovsek, Borivoj Sustarsic, David J. Nolan
The Application Of Linear Elastic Fracture Mechanics To Optimize The Vacuum Heat Treatment And Nitriding Of Hot-Work Tool Steels, V. Leskovsek, Borivoj Sustarsic, David J. Nolan
Faculty of Engineering - Papers (Archive)
Linear elastic fracture mechanics was used to optimise the vacuum-heat-treatment procedures for conventional hot-work AISIHII tool steel. The fracture toughness was determined with non-standard, circumferetially notched and fatigue-precracked tensile-test specimens.