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METHODOLOGY FOR DESIGN OF A VIBRATION
OPERATED VALVE
FOR ABRASIVE VISCOUS FLUIDS
by
Khashayar Behdinan
______________________________________________________________
A Dissertation Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(INDUSTRIAL AND SYSTEM ENGINEERING)
May 2009
Copyright 2009 Khashayar Behdinan
Object Description
| Title | Methodology for design of a vibration operated valve for abrasive viscous fluids |
| Author | Behdinan, Khashayar |
| Author email | behdinan@usc.edu; behdinan@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Industrial & Systems Engineering |
| School | Viterbi School of Engineering |
| Date defended/completed | 2009-03-18 |
| Date submitted | 2009 |
| Restricted until | Unrestricted |
| Date published | 2009-04-27 |
| Advisor (committee chair) | Khoshnevis, Behrokh |
| Advisor (committee member) |
Chen, Yong Rosenbloom, Paul |
| Abstract | In this research, a new ultrasonic operated valve was analyzed, prototyped, and tested for use in an abrasive viscous fluid application. The innovative valve concept is based on controlling the friction of material by employing several friction elements along the flow direction. Abrasive particles in the viscous fluid are stopped by the force of friction when coming into contact with the friction elements. Friction is neutralized by use of vibration to break away the abrasive particles from the friction element surfaces. Several factors were considered in designing the piezoelectric valve. Factor identification was done by conducting experiments and analyzing data. Some important factors that affect the valve design were recognized to be back pressure, size of friction blades along the direction of flow, density of material, viscosity, amplitude, frequency of vibration, and proportion of particles in the mix. First, a method was designed for measuring the friction coefficient of the given viscous materials. A design of experiment approach was pursued in order to identify the significant parameters. A piezoelectric transducer was used, which vibrated at the resonance frequency of 20 kHz. FEM modeling was used at that stage to ensure that the resonance frequency of the designed valve matched the resonance frequency of the transducer and booster that provided vibration. In order to perform proportional flow control, pulse width modulation was used to control the duty cycle of ultrasonic power transferred to the valve. A study was performed to find the best vibration performance for the parameters in the range of operation. |
| Keyword | vibration; valve; flow; piezo; piezo electric; methodology; design; experiment; abrasive; viscous; fluid; concrete; DOE; ultrasonic; friction |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m2128 |
| Rights | Behdinan, Khashayar |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Behdinan-2709 |
| Archival file | uscthesesreloadpub_Volume26/etd-Behdinan-2709.pdf |
Description
| Title | Page 1 |
| Full text | METHODOLOGY FOR DESIGN OF A VIBRATION OPERATED VALVE FOR ABRASIVE VISCOUS FLUIDS by Khashayar Behdinan ______________________________________________________________ A Dissertation Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (INDUSTRIAL AND SYSTEM ENGINEERING) May 2009 Copyright 2009 Khashayar Behdinan |
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