INTEGRITY OF ADHESIVE JOINTS

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 4120
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1986
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Materials Modification Inc
10195 Main St - Ste K, Fairfax, VA, 22031
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 DR T S SRIVATSAN
 (703) 352-1225
Business Contact
Phone: () -
Research Institution
N/A
Abstract
INHOMOGENEITIES AND/OR DEGRADATION IN ENGINEERING MATERIALS, PARTICULARLY ADHESIVE JOINTS, PRESENTS AN AREA OF CONSTANT AGGRAVATION TO BOTH DESIGNERS AND MANUFACTURERS. PREVIOUS RESEARCH HAS SHOWN THAT THE RESPONSE OF STRUCTURAL COMPONENTS TO IMPOSE VIBRATIONS CAN BE USED TO CHARACTERIZE THEIR INTEGRITY. THIS PROPOSAL OUTLINES A RESEARCH PROGRAM TO EXPLORE THE POSSIBILITY OF USING THE PREVIOUSLY DEVELOPED IMPULSE FREQUENCY RESPONSE VIBRATION TECHNIQUE AS A MECHANISTIC TOOL FOR EVALUATION OF THE STRUCTURAL INTEGRITY OF ADHESIVE BONDED JOINTS. PHASE I OF THE PROGRAM WOULD BE A FEASIBILITY STUDY TO VALIDATE THE VIBRATION INDUCED RESPONSE IN A MATERIAL WILL PROVIDE A PRACTICAL MEANS OF APPLYING MECHANICAL STRESSES THROUGH SMALL AMPLITUDE VIBRATION AND EVALUATING THEIR EFFECTS ON ADHESIVE BOND INTERFACES. THE TECHNIQUE HAS THE POTENTIAL FOR USING DURING MANUFACTURE (BY SETTING "ACCEPT-REJECT" LIMITS IN THE QUALITY OR PROCESS CONTROL OPERATIONS) AND FOR MONITORING DEGRADATION DURING THE SERVICE LIFE OF ADHESVIE JOINTS. THE UTILITY AND SIMPLICITY OF THIS APPROACH IS A DEFINITE ASSET FOR FULFILLING THE DEMANDS OF A NON-DESTRUCTIVE IN-SITU TEST TECHNIQUE IN VARIOUS APPLICATIONS.

* information listed above is at the time of submission.

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