MICROSCORPY

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$49,980.00
Award Year:
1986
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
4013
Agency Tracking Number:
4013
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
400 Hester St, San Leandro, CA, 94577
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
DR B W MAXFIELD
(415) 568-7720
Business Contact:
() -
Research Institution:
n/a
Abstract
IT IS CLEAR FROM RECENT PUBLISHED ARTICLES THAT THE GENERATION OF SURFACE WAVES MUST BE CONSIDERED WHEN INTERPRETING MEASURMENTS MADE USING A WIDE-ANGLE, FOCUSED-BEAM, REFLECTION-MODE ACOUSTIC MICROSCOPE. THERE EXISTS MUCH NEW AND USEFUL INFORMATION IN THESE SURFACE WAVES AND UNDERSTANDING THEM IN A MORE QUANTITATIVE MANNER WOULD OPEN NEW AVENUES IN THE NONDESTRUCTIVE EVALUATION OF SURFACE AND NEAR-SURFACE CHARACTERISTICS. IN PARTICULAR, THESE SURFACE WAVES WILL BE ABLE TO MEASURE THE THICKNESS OF THIN COATINGS, MAP CHANGES IN SURFACE RESIDUAL STRESSES AND DETECT AND QUANTIFY SMALL FATIGUE CRACKS. THIS PROPOSAL DESCRIBES HOW MEASUREMENTS ON SPECIMENS THAT REPRESENT FOUR DISTINCT CLASSES OF MATERIALS PROBLEMS SHOULD LEAD TO A ROTATIONAL PHASE II APPROACH TO UNDERSTANDING THE SURFACE WAVE ROLE IN ACOUSTIC MICROSCOPE MEASUREMENTS. THIS PROPOSAL ALSO SEEKS TO DEVELOP A HIGHLY QUANTITATIVE DESCRIPTION OF THE COMPLEX BUT HIGHLY REPRODUCIBLE ACOUSTIC MATERIALS SIGNATURE (AMS) SO THAT A MORE QUANTITATIVE DESCRIPTION OF MATERIALS PROPERTIES CAN BE OBTAINED.

* information listed above is at the time of submission.

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