Piezoelectric generators for biomedical and dental applications: Effects of cyclic loading |
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| Authors: | S M Allameh O Akogwu M Collinson J Thomas W O Soboyejo |
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| Affiliation: | (1) Department of Mechanical and Aerospace Engineering, The Princeton Institute of Science and Technology of Materials, Princeton University, Princeton, NJ, 08544 |
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| Abstract: | This paper presents the results of a study of the effect of cyclic loading parameters on the performance of piezo crystals.
The output power of the crystals was observed to increase with parameters such as the cyclic frequency and the dynamic load
range. However, the output power also decreased with increasing mean load. The efficiency of the crystal was calculated based
on the mechanical energy applied to the piezo crystal. The ratio of the electrical output to mechanical energy input was taken
as the efficiency of the crystal. This ratio was seen to increase with the cycling frequency, and also with the dynamic load
range. However, increasing mean load caused the efficiency to drop significantly. The implications of the results are discussed
for possible applications implanted bioMEMS and microelectronics systems. |
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