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dc.contributor.authorF. X. Li
dc.contributor.authorD. Mumford
dc.contributor.authorGadala, Mohamed S.
dc.identifier.citationSenousy, M. S., Li, F. X., Mumford, D., Gadala, M., & Rajapakse, R. K. N. D. (2007, April). Dynamic thermo-electro-mechanical performance of piezoelectric stack actuators. In Behavior and Mechanics of Multifunctional and Composite Materials 2007 (Vol. 6526, p. 652609). International Society for Optics and Photonics.en_US
dc.description.abstractPiezoelectric actuators are increasingly used in modern fuel injectors due to their quick response, high efficiency, and excellent repeatability. Current understanding of the thermo-electro-mechanical performance of piezoelectric actuators under dynamic driving fields is very limited. In this paper, the dynamic thermo-electro-mechanical performance of Lead Titanate Zirconate (PZT) stack actuators is experimentally studied over the temperature range of -30 °C to 80 °C, under a driving field of up to 2.4 kV/mm (with an AC drive method) and a constant preload of about 5MPa. Sinusoidal and trapezoidal driving fields with rise times varying from 0.1 ms to 2 ms are applied. It is found that dynamic stroke increases steadily with the temperature. Under driving frequencies lower than the resonance frequency of the testing system ( ≈ 500Hz), the electric field-strain behavior under different temperatures is very similar to the quasi-static results obtained previously. In the case of a trapezoidal pulse, decreasing the rise time is found to be equivalent to increasing the frequency.en_US
dc.publisherSociety of Photo-Optical Instrumentation Engineersen_US
dc.subjectThermo-electro-mechanical performanceen_US
dc.titleDynamic thermo-electro-mechanical performance of piezoelectric stack actuatorsen_US

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