Investigation of Deformation in Bimorph Piezoelectric Actuator: Analytical, Numerical and Experimental Approach

Abstract

Piezoelectric actuators are widely used in many fields such as medical instruments, optics, and aerospace due to their small size and high reliability. Piezoelectric cantilever actuators are used in different configurations such as unimorph and bimorph. In this paper, a 3-D lead zirconate titanate (PZT) bimorph was modeled in COMSOL Multiphysics software for investigation of series and parallel configuration. Theoretical analysis has been developed for the measurement of deformation of a piezoelectric cantilever in inverse piezoelectric effect. The experiment was also performed to examine the deformation of piezoelectric bimorph cantilever. It is found that under a constant applied electric field of 100 V bimorph piezoelectric actuator produces maximum deformation at 100 mm length, 30 mm width, and 20 mm thickness. It is also found that piezoelectric series benders have relatively less deformation than piezoelectric parallel benders. Experimental results show good agreement with theoretical and Numerical results.

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Application of Nanofluids for Machining Processes: A Comprehensive Review

“…Until recent research, scientists have carried out nearly all possible methods regarding the application of a single nanofluid as the cutting fluid, whereas they can actually extend their research to hybrid nanofluids [ 127 , 128 , 129 , 130 , 131 , 132 , 133 ], which are more efficient in this application when compared to the single type of nanofluid. This is because hybrid nanofluids [ 134 , 135 , 136 , 137 , 138 , 139 ] show the maximum efficiency in the particular machining process among the different nanofluids. In addition, comparison studies in the branch of lubricating agents are mostly carried out based on the difference in the applications of nanofluids and ordinary fluids.…”

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