NDE OF ADHESIVE BONDS

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$208,500.00
Award Year:
1987
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
4502
Agency Tracking Number:
4502
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 Institute:
n/a
Abstract
THE OVERALL GOAL OF THIS RESEARCH IS TO DEVELOP AN INNOVATIVE NONDESTRUCTIVE (NONINVASIVE) INSPECTION TECHNIQUE THAT CAN DETERMINE WHETHER OR NOT DURABLE ADHESIVE BONDS HAVE BEEN FORMED IN RUBBER-TOMETAL JOINTS AND WHETHER A BOND THAT HAS BEEN EXPOSED TO USE CONDITIONS CONTAINS ITS INTEGRITY. THE PHASE I EFFORT WILL IDENTIFY, DESCRIBE AND EVALUATE THE CONDITIONS FOR EXCITING BOND SENSITIVE ACOUSTIC WAVES, IN PARTICULAR LAMB WAVES, IN RUBBER/METAL LAMINATES RELEVANT TO NAVY APPLICATIONS AND ASSESS THE SENTITIVITY OF WAVE PARAMETERS TO VARIOUS DEGREES OF ADHESION BETWEEN THE MATERIALS. SPECIFIC TECHNICAL OBJECTIVES ARE: 1) TO DETERMINE THE THICKNESS-TOWAVELENGTH LIMIT FOR EXCITATION OF LEAKY LAMB (PLATE) WAVES (THE THICKNESS OF THE ADHERENDS AS WELL AS THE ADHESIVE LAYER WILL BE EXAMINED); 2) TO APPLY EXISTING THEORIES OF WAVE EXCITATION AND PROPAGATION IN LAYERED MEDIA TO BONDED RUBBER-TO-METAL STRUCTURES; 3) TO IMPLEMENT A QUANTIFIABLE METHOD FOR PRODUCING DIFFERENT DEGREES OF BOND ADHESION IN RUBBER/METAL LAMINATES; AND 4) TO DETERMINE THE SENSITIVITY LIMITS OF LEAKY LAMB WAVE METHODOLOGY TO INITIAL BOND QUALITY AND TO CHANGES IN BOND QUALITY, WHERE QUALITY IS DEFINED BY A MEASURE OF ADHESION. ACCELERATED AGING WILL BE EMPLOYED TO EVALUATE ENVIRONMENTAL EXPOSURE EFFECTS.

* information listed above is at the time of submission.

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