IMPROVED TRANSDUCER PRODUCTION TESTING FOR RUBBER-TO-METAL BONDED JOINTS

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$631,000.00
Award Year:
1988
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
6573
Agency Tracking Number:
6573
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
9063 Bee Caves Rd, Austin, TX, 78733
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr Cecil M Teller
(512) 263-2101
Business Contact:
() -
Research Institution:
n/a
Abstract
THE OVERALL GOAL OF THIS RESEARCH IS TO DEVELOP AN INNOVATIVE NONDESTRUCTIVE (NONINVASIVE) INSPECTION TECHNIQUE FOR THE DETERMINATION OF THE INTEGRITY OF RUBBER-TO-METAL BONDS OF THE TYPE USED IN PRODUCTION SONAR TRANSDUCERS. THE PHASE I EFFORT WILL DEVELOP THE IMPEDANCE ANALYSIS TECHNIQUE THAT RELATES THE ELECTRICAL IMPEDANCE CHARACTERISTICS OF AN ULTRASONIC TRANSDUCER TO THE PROPERTIES OF A BONDED SAMPLE WITH WHICH IT IS IN CONTACT. PERFORMANCE OF THE TECHNIQUE WILL BE EVALUATED BY IT'S CAPABILITY TO DETECT AN UNBOND CONDITION IN WHICH THE RUBBER AND METAL ARE IN INTIMATE CONTACT. THEORETICAL WORK WILL CONSIDER THE ELECTRICAL EQUIVALENT CIRCUIT MODEL OF TRANSDUCER INCLUDING THE ACOUSTIC LOADING PRESENTED BY THE SAMPLE WITH WHICH IT IS IN CONTACT. EXPERIMENTAL WORK WILL INCLUDE DEVELOPMENT OF SUITABLE TRANSDUCERS AND ANALYSIS OF IMPEDANCE DATA USING INVERSE ACOUSTIC MODELING TECHNIQUES TO INFER MATERIAL CHARACTERISTICS RELATING TO THE BONDED AND UNBONDED CONDITION. A NUMBER OF CONTROLLED RUBBER-TO-METAL BONDED SAMPLES WILL BE MANUFACTURED AND INSPECTED TO DETERMINE THE SUITABILITY AND LIMITS OF PERFORMANCE OF THE PROPOSED METHOD.

* information listed above is at the time of submission.

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