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PVDF Wire Sensor for External Monitoring of Piping Sound Pressure Level

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-10-M-0367
Agency Tracking Number: N10A-016-0077
Amount: $99,329.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: N10A-T016
Solicitation Number: 2010.A
Solicitation Year: 2010
Award Year: 2010
Award Start Date (Proposal Award Date): 2010-06-28
Award End Date (Contract End Date): 2011-07-31
Small Business Information
4821 Shippen Court
Virginia Beach, VA 23455
United States
DUNS: 173649976
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Curtis Mitchell
 (407) 448-0744
Business Contact
 Curtis Mitchell
Title: CEO
Phone: (407) 448-0744
Research Institution
 Virginia Polytechnic Institute
 Lisa D Cotting
Office of Sponsored Programs 460 Turner Street, Suite 306
Blacksburg, VA 24060
United States

 (540) 231-9373
 Nonprofit College or University

In this project we propose to demonstrate the feasibility of an external pipe sensor for measuring sound pressure levels in submarine piping systems. The sensor consists of flexible PVDF wire wrapped a number of integral turns around the pipe exterior. The charge/voltage output of the sensor can be shown to be directly proportional and highly sensitive to the amplitude of the contained fluid pulsation wave. Previous work by one of key team members of the proposal has both analytically and experimentally demonstrated the potential of PVDF wire sensors for measuring low level interior sound pressures in piping systems. These low level sound pressure induced motions are undetectable to the desired sensitivity and accuracy with traditional accelerometers. In Phase I, analytical simulation tools will be developed to model the fluid filled piping system and externally attached PVDF wire sensor. The model will be used to determine the optimum sensor arrangement, design sensitivity, accuracy and SNR. Finite Element models will investigate the influence of realistic piping characteristics on sensor performance. Optional tasks for constructing a basic piping test rig and preliminary testing of a PVDF wire sensor are also included.

* Information listed above is at the time of submission. *

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