NONDESTRUCTIVE EVALUATION OF CERAMIC USING SYSTEM IDENTIFICATION

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$475,077.00
Award Year:
1991
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
8259
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Advanced Technology Materials
14900 Sweitzer Ln, Laurel, MD, 20707
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr Nabih E Bedewi
(301) 498-8200
Business Contact:
() -
Research Institution:
n/a
Abstract
CERAMIC MATERIALS ARE UNDER CONSIDERATION FOR STRUCTURAL COMPONENTS IN ADVANCED HEAT ENGINES FOR SEVERAL REASONS. THE PRIMARY MOTIVATION IS THEIR HIGH STRENGTH UNDER SIGNIFICANTLY INCREASING OPERATING TEMPERATURES. THE USE OF THESE HIGH TEMPERATURE MATERIALS WILL PERMIT BETTER FUEL EFFICIENCY AND REDUCE COOLING SYSTEM REQUIREMENTS. DUE TO THEIR ATOMIC STRUCTURE, CERAMICS INTRINSICALLY EXHIBIT LOW STRAIN TOLERANCE AND LOW FRACTURE TOUGHNESS. LOW TOUGHNESS, WHEN COMBINED WITH DESIRED TENSILE STRESS STATES, USUALLY RESULTS IN VERY SMALL CRITICAL FLAW SIZE. THE PROGRAM CONSISTS OF TESTING STRUCTURAL ELEMENTS OF SIMPLE CONSTRUCTION. IT WILL BE DETERMINED WHETHER THE RANDOM DECREMENT (RANDOMDEC) TECHNIQUE CAN CORRECTLY ASSESS DAMAGE LEVELS, CONSISTENT SIGNATURES, AND DAMPING AS A FUNCTION OF FREQUENCY FOR THESE STRUCTURAL ELEMENTS.

* information listed above is at the time of submission.

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