BIAXIAL INTERFACE STRESS TRANSDUCER FOR HIGH OVERPRESSURES - DEVELOPMENT

Award Information
Agency: Department of Defense
Branch: Defense Threat Reduction Agency
Contract: N/A
Agency Tracking Number: 2446
Amount: $88,839.00
Phase: Phase II
Program: SBIR
Awards Year: 1987
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Applied Research Associates In
4300 San Mateo Blvd Ne A220, Albuquerque, NM, 87110
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Robert A Frank
 (919) 876-0018
Business Contact
Phone: () -
Research Institution
N/A
Abstract
DEFINITION OF THE STRUCTURE-MEDIA INTERACTION (SMI) LOADS ON A BURIED STRUCTURE IS ONE OF THE LARGEST SOURCES OF UNCERTAINTY IN ANALYZING THE SURVIVABILITY OF STRATEGIC STRUCTURES. ADVANCEMENT OF THE STATEOF-THE-ART IN THE MODELING OF SMI BEHAVIOR IS HAMPERED BY A LIMITED DATA BASE WHICH IS CONFINED TO OVERPRESSURES MUCH SMALLER THAN THOSE CURRENTLY OF INTEREST. THIS EFFORT PROPOSES TO DEVELOP AND TEST A BIAXIAL INTERFACE STRESS TRANSDUCER (BIST) CAPABLE OF MEASURING INTER-FACE NORMAL AND SHEAR STRESSES AT VERY HIGH PRESSURES. THE PROPOSED GAGE WOULD BE A MODIFICATION OF THE TRIAXIAL INTERFACE STRESS GAGE (TIST) THAT IS CURRENTLY USED FOR LOW OVERPRESSURE ENVIRONMENTS. AS PART OF THE PROPOSED EFFORT, TECHNICAL ISSUES THAT HAVE ARISEN FROM APPLICATION OF THE TIST WILL BE INVESTIGATED. THESE ISSUES INCLUDE: (1) CROSS-AXIS ACCELERATION, (2) SUSCEPTIBILITY TO MOISTURE PENETRATION, (3) GAGE CALIBRATION, (4) GAGE OFFSETS, (5) DOWNSIZING THE GAGE, AND (6) DATA ANALYSIS AND INTERPRETATION. THE EFFORT WILL ALSO INVESTIGATE THE FEASIBILITY OF DEVELOPING A TEST FIXTURE TO MEASURE INTERFACE SHEAR IN SIMULATION DEVELOPMENT AND MATERIAL PROPERTY TESTS.

* information listed above is at the time of submission.

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