Index-matched Boundary Techniques for the Elimination of Acoustical Resonances

Author(s)

Jack H. Parker, Wright Laboratory
Bradley D. Duncan, University of DaytonFollow

Document Type

Article

Publication Date

2-2003

Publication Source

AIAA Journal

Abstract

We extend the principle of optical index of refraction to apply the concept of acoustical index for transverse acoustical wave propagation in strings. The relationship between acoustical index and mass density of the acoustic material is developed. With this theoretical link established, classic index-matching techniques are explored at acoustical boundaries. Proper selection of boundary interface segments leads to the elimination of resonant vibrationalmodes that occur in rigidly supported strings, while maintaining the nonresonant vibration response.

Inclusive pages

176-181

ISBN/ISSN

0001-1452

Document Version

Published Version

Comments

Paper is made available for download in compliance with publisher policy on self-archiving. Permission documentation is on file.

Copyright

Copyright © 2003, American Institute of Aeronautics and Astronautics

Publisher

American Institute of Aeronautics and Astronautics

Volume

41

Issue

2

Peer Reviewed

yes

eCommons Citation

Parker, Jack H. and Duncan, Bradley D., "Index-matched Boundary Techniques for the Elimination of Acoustical Resonances" (2003). Electro-Optics and Photonics Faculty Publications. 1.
https://ecommons.udayton.edu/eop_fac_pub/1