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NDE OF ADHESIVE BONDS

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 4502
Amount: $208,500.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1987
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
9063 Bee Caves Rd
Austin, TX 78733
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Dr Cecil M Teller
 (512) 263-2101
Business Contact
Phone: () -
Research Institution
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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