Underwater Structural Health Monitoring of Composite Navy Propellers

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-11-M-0218
Agency Tracking Number: N111-067-1556
Amount: $79,951.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2011
Solicitation Topic Code: N111-067
Solicitation Number: 2011.1
Small Business Information
3340 West College Ave., State College, PA, -
DUNS: 168596554
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Roger Royer
 Dir. Tech.&Bus. Develop
 (814) 234-3437
Business Contact
 Roger Royer
Title: Dir. Tech.&Bus. Develop
Phone: (814) 234-3437
Email: rroyer@fbsworldwide.com
Research Institution
Advanced composite materials are currently being considered for use in propellers on Navy ships. However, limited in-service data exists on the performance of these materials which leads to excessive pre-service testing and a tendency to overdesign components. Therefore, to reduce the excessive testing, overdesign tendencies and implementation time while not compromising safety, there is currently a need for a permanently installed SHM system capable of detecting and characterizing early stages of in-service damage to composite propellers. FBS, Inc. proposes the development of an ultrasonic guided wave approach. The system consists of an array of flexible guided wave sensors which can be surface mounted or embedded inside the composite component. The guided wave sensors can function either as ultrasonic transmitters or receivers in order to send and receive guided wave energy between them. Changes occurring to the received signals due to the introduction of damage can be monitored over time, in real time or periodically, to alert personnel if and when damage occurs. A key advantage of the proposed approach is the fact that guided waves can travel long distances in the structure making it possible to monitor the entire component with only a few sensors mounted at fixed locations.

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

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government