Advanced Finite Element Model Development for Characterization and Mitigation of Bone Conducted Sound Transmission in High Noise Environments

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9550-07-C-0088
Agency Tracking Number: F064-035-0277
Amount: $749,798.00
Phase: Phase II
Program: STTR
Awards Year: 2007
Solicitation Year: 2006
Solicitation Topic Code: AF06-T035
Solicitation Number: N/A
Small Business Information
2020 Kraft Drive, Suite 3040, Blacksburg, VA, 24060
DUNS: 364131011
HUBZone Owned: Y
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Kenji Homma
 Research Scientist
 (540) 951-1284
 kenji@adaptivetechinc.com
Business Contact
 Mike Vaudrey
Title: Vice President
Phone: (540) 951-1284
Email: mike@adaptivetechinc.com
Research Institution
 STANFORD UNIV.
 Catherine Boxwell
 Office of Sponsored Research
Stanford, CA, 94305 4125
 (650) 725-6864
 Nonprofit college or university
Abstract
Improved understanding of mechanisms controlling bone conduction (BC) sound transmission, especially with respect to acoustic excitation, is urgently needed in order to develop more effective hearing protection in extremely high noise fields. The Phase I research program made great progress toward this goal by yielding new insights into a mechanism believed to be a significant contributor to BC sound transmission. This has been achieved through FE simulation modeling in conjunction with bioacoustic experiments using human cadaver temporal bone specimens, as well as with a psychoacoustic experiment. Phase II research will continue to build upon and extend the Phase I research methodologies and tools in order to obtain a more complete understanding of vibro-acoustic mechanisms that affect BC sound transmission. Furthermore, based on the improved knowledge of BC sound transmission obtained during Phase I, several potential approaches for controlling a specific BC mechanism have been proposed. The performance characteristics of the BC sound mitigation approaches will be investigated using the developed research tools. One mitigation approach judged to be the most effective and practically feasible will be implemented into a prototype to be tested psycho-acoustically using actual subjects.

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

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