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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Computational and experimental characterization of a low-cost piezoelectric valveless diaphragm pump

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Choi, Andres [1] ; Vatanabe, Sandro L. [1] ; de Lima, Cicero R. [2] ; Silva, Emilio C. N. [1]
Total Authors: 4
[1] Univ Sao Paulo, Dept Mechatron & Mech Syst Engn, Sao Paulo - Brazil
[2] Univ Fed Abc, Sch Engn Modeling & Appl Sci, BR-09210580 Santo Andre - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Intelligent Material Systems and Structures; v. 23, n. 1, p. 53-63, JAN 2012.
Web of Science Citations: 3

Flow pumps act as important devices in areas such as Bioengineering, Medicine, and Pharmacy, among other areas of Engineering, mainly for delivering liquids or gases at small-scale and precision flow rate quantities. Principles for pumping fluids based on piezoelectric actuators have been widely studied, since they allow the construction of pump systems for displacement of small fluid volumes with low power consumption. This work studies valveless piezoelectric diaphragm pumps for flow generation, which uses a piezoelectric ceramic (PZT) as actuator to move a membrane (diaphragm) up and down as a piston. The direction of the flow is guaranteed by valveless configuration based on a nozzle-diffuser system that privileges the flow in just one pumping direction. Most research efforts on development of valveless flow pump deal either with computational simulations based on simplified models or with simplified physical approaches based on analytical models. The main objective of this work is the study of a methodology to develop a low-cost valveless piezoelectric diaphragm flow pump using computational simulations, parametric study, prototype manufacturing, and experimental characterization. The parametric study has shown that the eccentricity of PZT layer and metal layer plays a key role in the performance of the pump. (AU)

FAPESP's process: 11/02387-4 - Innovative piezocomposite devices for nanopositioning and energy harvesting
Grantee:Emílio Carlos Nelli Silva
Support Opportunities: Regular Research Grants
FAPESP's process: 04/14675-0 - Study of the technical viability of a piezoelectric flow pump
Grantee:Rogério Felipe Pires
Support Opportunities: Research Grants - Innovative Research in Small Business - PIPE