20 April 2012 On optimized placement of multidirectional piezoelectric layers for multimodal energy scavenging: a theoretical study
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Abstract
The piezoelectric transduction mechanism has received a great attention in the energy harvesting field. Although there are many energy harvesting possibilities where piezoelectric transduction can be suitably employed, design of piezoelectric energy harvesters are typically restricted within the cantilever beams. As an example the energy scavenging from the wings of a Micro Air Vehicles (MAV) will certainly beneficial for its sustainable missions and which is predominantly a plate type harvester of arbitrary shape. In this paper a generalized multi directional and multimodal placement of piezoelectric layers on the substrate is discussed in order to maximize the power output. A theoretical study has been conducted using a mathematical model for the plate type harvesters and an optimization problem is solved to maximize the power output from the harvesters. This will provide harvesting of the energy from wide band of frequency and thus it is called energy scavenging. It is quite well known that the cantilever plate with straight edge has one directional bending whereas the wings of arbitrary shapes will have two directional bending in association with torsion. Thus potentially all these possible modes of bending can generate energy. A preliminary mathematical study is conducted in this paper.
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Sourav Banerjee, Sourav Banerjee, } "On optimized placement of multidirectional piezoelectric layers for multimodal energy scavenging: a theoretical study", Proc. SPIE 8348, Health Monitoring of Structural and Biological Systems 2012, 83481E (20 April 2012); doi: 10.1117/12.917834; https://doi.org/10.1117/12.917834
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