Aircraft Composite Component Inspection System

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$99,987.00
Award Year:
2002
Program:
SBIR
Phase:
Phase I
Contract:
F09650-02-M-0420
Award Id:
57780
Agency Tracking Number:
021XP-1273
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
2572 White Road, Irvine, CA, 92614
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
188465819
Principal Investigator:
JanBurke
Senior Scientist
(949) 553-0688
jburke@metrolaserinc.com
Business Contact:
CecilHess
President
(949) 553-0688
chess@metrolaserinc.com
Research Institute:
n/a
Abstract
"We propose to develop a whole-field optical sensor that can detect and quantify defects such as disbonds and delaminations in composite materials of aircraft structures. This measurement problem calls for high-resolution, full-field measurement, becauselarge areas must be tested and the locations and sizes of defects are initially unknown. Interferometric techniques are well suited for this type of task, since they can detect deformation anomalies in the mm range within a scalable field of view. Suchanomalies can then be used to identify defects. Two particular variations of speckle interferometry are especially promising for this application: absolute speckle interferometry and sheared speckle interferometry. A unique wavefront sensing technique willbe used to eliminate time-dependent fluctuations that normally render interferometry unusable in field applications. Shearing interferometry conceptually cancels disturbances, but in turn yields the displacement in an indirect way. Depending on type andbehavior of defects under the mechanical or thermal load used for testing, both variations will have advantages and disadvantages. We will determine, experimentally and theoretically, the optimal way to detect material flaws quickly and reliably, byapplying the methods on actual test specimens and will design a system that can be used in a laboratory and field environment. The proposed technique will benefit the military and commercial aer

* information listed above is at the time of submission.

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