SPECTRAL CONTENTS READOUT OF BIREFRINGENT SENSORS

Award Information

Agency: National Aeronautics and Space Administration	Branch: N/A	Award ID: 2852	Program Year/Program: 1987 / SBIR
Agency Tracking Number: 2852	Solicitation Year: N/A	Solicitation Topic Code: N/A	Solicitation Number: N/A

Small Business Information: Strainoptic Technologies
108 West Montgomery Ave North Wales, PA 19454
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Woman-Owned: No

Minority-Owned: No

HUBZone-Owned: No

Phase 2: Fiscal Year: 1987

Title: SPECTRAL CONTENTS READOUT OF BIREFRINGENT SENSORS

Agency: NASA

Contract: N/A

Award Amount: $200,000.00

Abstract:
A TRANSPARENT MATERIAL SUBJECTED TO STRESSES BECOMES BIREFRIGENT, PRODUCING A RELATIVE RETARDATION BETWEEN ORTHOGONALLY POLARIZED RAYS THAT IS PROPORTIONAL TO THE STRAINS. IN PHOTOELASTICITY, THIS RETARDATION IS MEASURED VISUALLY, USING A VARIETY OF COMPENSATORS, OR AUTOMATICALLY,USING COMPLEX ANALYZER ROTATORS OR ELECTRO-OPTICAL MODULATORS, LIMITED TO SMALL RETARDATION LEVELS. IN THE SPECTRAL CONTENTS APPROACH PROPOSED BY THIS RESEARCH,THE TRANSMITTED LIGHT INTENSITY IS MEASURED AT SEVERAL DISCRETE WAVELENGTHS, AND THE RESULTING SPECTRAL SIGNATURE IS INTERPRETED BY A MICROPROCESSOR IN TERMS OF THE MEASURED RETARDATION AND STRESS. THE RESULTING BIREFRINGENT SENSOR - SPECTRAL ANALYZER SYSTEMPERMITS A NONCONTACTING METHOD OF STRAIN MEASUREMENTS, WITH THE ABILITY OF CARRYING THE SIGNAL TO A REMOTE LOCATION, USING FIBER-OPTIC CABLES. THE PROPOSED RESEARCH EXTENDS THERANGE OF STRAIN MEASURMENTS TO HIGH TEMPERATURES.

Principal Investigator:
Alex S Redner
Principal Investigator

Business Contact:

Small Business Information at Submission:

Strainoptic Technologies Inc.
21 Terrace Rd Norristown, PA 19401

EIN/Tax ID:

DUNS: N/A

Number of Employees: N/A

Woman-Owned: No

Minority-Owned: No

HUBZone-Owned: No