High-Speed Surface Measurement Device

Award Information
Agency: Department of Defense
Branch: Army
Contract: W31P4Q-09-C-0443
Agency Tracking Number: A091-003-0062
Amount: $69,941.00
Phase: Phase I
Program: SBIR
Awards Year: 2009
Solicitation Year: 2009
Solicitation Topic Code: A09-003
Solicitation Number: 2009.1
Small Business Information
2905 Westcorp Blvd., Suite # 220, Huntsville, AL, 35805
DUNS: 868299129
HUBZone Owned: Y
Woman Owned: Y
Socially and Economically Disadvantaged: Y
Principal Investigator
 Georges Nehmetallah
 Senior Engineer
 (256) 536-4346
Business Contact
 Sarat Praharaj
Title: Vice President
Phone: (256) 536-4346
Email: spraharaj@aol.com
Research Institution
Weather conditions that may affect the design of missile radomes, windows and leading edges include the presence of rain, snow/sleet in the atmosphere and sand during missile flight trajectory. The Tri-Service Agencies Weather Encounter Advisory Group led by AMRDEC is organizing tests to study the detailed fracture mechanics of brittle ceramics radome material in free flight. In this proposed work we will develop a dynamic holographic interferometry technique to measure dynamic surface deformations of a fast moving missile. Specifically, we will analyze and evaluate different optical methods, and design experimental holographic interferometry set-ups for measuring deformations of a missile radome moving in a rain field or in a sand cloud. We will be using combined approaches of digital holography and analog holography. Initially, we plan to use CW analog holographic schemes with a controlled shutter that will allow performing analog holographic interferometry using thermoplastic holocamera or photorefractive materials. Also, parallel methods using digital holography and digital holographic interferometry will be used. Finally, we will develop numerical models that analyze analog holographic interference patterns and digital holographic interferometry results to infer changes in surface map of the radome due to deformations.

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

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