Phased Array Ultrasonic Inspection of Fastener Holes in Two-Layer Structures

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: F33615-02-C-5217
Agency Tracking Number: 011ML-0087
Amount: $749,894.00
Phase: Phase II
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
25 Eaton Street, Wakefield, MA, 01880
DUNS: 006631191
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Vincent Lupien
 (781) 587-1177
Business Contact
 Vincent Lupien
Title: President
Phone: (781) 587-1177
Research Institution
"Nondestructive inspection is a key component of programs aimed at extending the service life of aging aircraft. One important capability is the detection of cracking and corrosion around fastener holes. In thick, multiple layer structures, there is oftenno solution but removal of the fasteners for inspection, a costly and potentially damaging process. Phased array ultrasonics offer a novel and powerful solution. In Phase I of this project, we have demonstrated the technical feasibility of phased arraysfor inspection without fastener removal through experimental measurements on two-layer specimens and through the design of a prototype. The validity of the design was demonstrated by extensive ray-tracing and ultrasonic field modeling studies. In PhaseII our focus is building and testing the prototype. If we are successful, we anticipate Phase III funding to adapt our device to specific Air Force aircraft, which we intend to accomplish with the help of our large commercial partners."

* Information listed above is at the time of submission. *

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