SBIR-STTR Award

Integrated Optical-and-Digital Data Acquisition System for Dynamic Surface Displacements and Stress Analysis of Aircraft Tires
Award last edited on: 10/4/2002

Sponsored Program
SBIR
Awarding Agency
DOD : AF
Total Award Amount
$600,143
Award Phase
2
Solicitation Topic Code
AF93-126
Principal Investigator
Alex S Redner

Company Information

Strainoptic Technologies Inc

108 West Montgomery Avenue
North Wales, PA 19454
   (215) 661-0100
   stress@strainoptic.com
   www.strainoptic.com
Location: Single
Congr. District: 01
County: Montgomery

Phase I

Contract Number: F33615-93-C-3408
Start Date: 4/27/1993    Completed: 10/27/1993
Phase I year
1993
Phase I Amount
$52,177
The objective of the proposed research is to develop an integrated system for dynamic stress analysis of aircraft tires. The system will use the Projection-Moire concept, whereby a high-density line-set of Master Grating is projected on the investigated surface. The projected lines, deformed by the displacements and bending of the investigated surface is then optically recombined with a reference set, producing the Moire Fringe pattern. As operational system will be assembled and testing will be conducted to prove the feasibility of the proposed approach. The designed system will include a projection master and a PC-controlled CCD camera to receive the image, and produce the Moire fringes, using software generated reference grating. Software will be developed to analyze the fringe pattern, retrieving the displacement and stress information.

Keywords:
MOIRE FRINGES DYNAMIC DISPLACEMENT MAPPING OPTICAL INSTRUMENTS PROJECTION MOIRE STRESS ANALYSIS

Phase II

Contract Number: F33615-94-C-3405
Start Date: 6/30/1994    Completed: 11/6/1996
Phase II year
1994
Phase II Amount
$547,966
The objective of the proposed research is to develop an instrument for Dynamic Stress Analysis of Aircraft Tires. The system will integrate non-contacting optical Projection Moire and Digital, PC Based Analysis of fringe patterns. Software will be developed to interpret the patterns, yielding surface strain/stress information. As a result of the research, a working system will be tested to acquire stress information on tires running at high speeds on a test drum.