Abstract
Keywords:
Lightweight Piezoelectric Ceramic Composite Actuator (LIPCA), PZT, Carbon/epoxy, Glass/epoxy, Total Effective Moment, Bernoulli-Euler Lamination Beam Theory, Classical Lamination Theory (CLT), Residual Stress
Abstract
Our research group developed the PZT/FRP actuator to improve the fatigue characteristic of THUNDER and carried out various performance evaluations. The advanced piezoelectric ceramic composite actuator, which is called LIPCA (Lightweight Piezoelectric Composite Actuator), replaced the aluminum foil and stainless steel in THUNDER with the fiber reinforcement composites and the optimization of the laminate configuration was performed to maximize the stress transfer from the PZT layer to the fiber layer and the fiber bridging effect. The relationship between the performance displacement and the applying load of LIPCA whose displacement was controlled by the change of the actuating frequency, was evaluated first for the fatigue performance test. Therefore, this study proposed the calculation method of the applying a total effective moment (ME) when the actuating height of LIPCA was increased from 1 mm to 20 mm. To estimate the relationship between the total effective moment (ME) and the Laminate Beam Theory (M) by Bernoulli-Euler was reviewed. And the residual stress distribution of LIPCA using the CLT, was evaluated.