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Proceedings Paper

Synthetic jets with piezoelectric diaphragms
Author(s): Poorna Mane; Karla Mossi; Robert Bryant
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Paper Abstract

Piezoelectric diaphragms are used as synthetic jets because of their size, rapid time response, and relatively low power consumption. Among the piezoelectric diaphragms used are unimorphs and Bimorphs. In this study, a bimorph diaphragm, a thin Unimorph pre-stressed device and a Radial Field Diaphragm (RFD) are compared. A bimorph consists of two bonded PZT discs, a thin Unimorph pre-stressed device consists of copper, PZT, and stainless steel and a Radial Field Diaphragm consist of a layer of PZT with inter-digitized electrodes encapsulated in Kapton film. The effects of driving waveform on jet velocity are studied for each of these actuators. The actuators are driven at varying frequencies and the differential pressure in the cavity is monitored.

Paper Details

Date Published: 16 May 2005
PDF: 11 pages
Proc. SPIE 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics, (16 May 2005); doi: 10.1117/12.599584
Show Author Affiliations
Poorna Mane, Virginia Commonwealth Univ. (United States)
Karla Mossi, Virginia Commonwealth Univ. (United States)
Robert Bryant, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 5761:
Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics
William D. Armstrong, Editor(s)

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