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Improved inspection of Bonded Repairs

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
FBS, Inc.
3340 West College Ave. State College, PA 16801-2503
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2007
Title: Improved inspection of Bonded Repairs
Agency / Branch: DOD / USAF
Contract: FA8501-07-M-0138
Award Amount: $94,006.00


Bonded joints are used extensively for both civilian and military aircraft applications, especially for corrosion damage mitigation via patch bonding. Assessing the quality of these bonds is typically performed using NDE techniques such as bulk wave ultrasonics or thermography. These methods cannot reliably differentiate between a good bond and a so-called "kissing" bond. A kissing bond has no mechanical integrity existing between one or both of the substrates that sandwich the adhesive. Shear wave energy concentrated at the substrate-adhesive interfaces will certainly provide the necessary kissing bond detection capability. Bulk wave techniques could be designed to introduce shear waves into a bond structure but they would be impractical and tedious to implement. Guided waves, on the other hand, provide the resource to easily introduce shear waves into the bond interfaces. FBS, Inc. proposes the development of a guided wave technology that will be capable of determining the mechanical integrity and strength of bonded structures to solve the famous "kissing" bond problem. The guided wave technique, which has shown promise in previous work, will take advantage of recent advances in guided wave sensor technology and feature based detection algorithms to finally provide a solution to the "kissing" bond problem.

Principal Investigator:

Joseph L. Rose
Applications Engineer

Business Contact:

Michael J. Avioli
Applications Engineer
Small Business Information at Submission:

143 Hawbaker Industrial Drive Suite #102 State College, PA 16803

EIN/Tax ID: 232439333
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No