OPTICAL DIFFERENTIAL STRAIN GAUGES FOR THE MEASUREMENTS OF DYNAMIC STRAINS

Award Information
Agency:
Department of Defense
Amount:
$486,000.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
Army
Award Year:
1989
Phase:
Phase II
Agency Tracking Number:
8675
Solicitation Topic Code:
N/A
Small Business Information
Geo-centers Inc.
7 Wells Ave, Newton Centre, MA, 02159
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
Principal Investigator
 Bruce N Nelson
 (617) 964-7070
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THE GOAL OF THE PHASE I PROGRAM IS TO DEMONSTRATE THE UTILITY OF GEO-CENTERS FIBER OPTIC DIFFERENTIAL STRAIN GAUGE FOR MONITORING THE DYNAMIC STRAINS IN CONTAINERS OF PULSED CAPACITORS AND TRANSFORMERS. THE FAILURE OF PULSED CAPACITORS AND TRANSFORMERS UNDER ROUTING OPERATING CONDITIONS PRESENTS A SERIOUS PROBLEM TO PULSED POWER SYSTEM DEVELOPMENT. COMPONENT FAILURE IMPACTS BOTH THE COST AND SAFETY OF THE PROGRAMS IN WHICH THEY ARE UTILIZED. MECHANICAL STRAINS IN THE CASES OF THESE DEVICES ARE THE MOST LIKELY CAUSE OF COMPONENT FAILURE. STANDARD STRAIN MEASURING DEVICES ARE INCAPABLE OF OPERATING IN THE HIGH ELECTROMAGNETIC INTERFERENCE (EMI) ENVIRONMENT ASSOCIATED WITH PULSE CAPACITORS AND TRANSFORMERS. THE PROPOSED SENSORS ARE IMMUNE TO THE EFFECTS OF EMI. THEY ARE, THEREFORE, IDEALLY SUITED TO THIS MEASUREMENT ENVIRONMENT. ADVANTAGES OF THE PROPOSED SENSING APPROACH INCLUDE A TEMPERATURE INSENSITIVE SENSOR OUTPUT, OPTICAL ISOLATION, PERFORMANCE CAPABILITIES EQUIVALENT TO THOSE OF FOIL GAUGES, AND A SENSOR OUTPUT DETECTION SCHEME WHICH IS IMMUNE TO SOURCE LIGHT INTENSITY VARIATIONS, MICROBENDING LOSSES AND THE EFFECTS OF RADIATION FIBER DARKENING.

* information listed above is at the time of submission.

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