USA flag logo/image

An Official Website of the United States Government

Determination of Microcracking Damage in Composites

Award Information

Agency:
Department of Defense
Branch:
Air Force
Award ID:
62385
Program Year/Program:
2003 / SBIR
Agency Tracking Number:
F031-1116
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Southwest Sciences, Inc.
1570 Pacheco St. Suite E-11 Santa Fe, NM 87505-3993
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: Yes
 
Phase 1
Fiscal Year: 2003
Title: Determination of Microcracking Damage in Composites
Agency / Branch: DOD / USAF
Contract: F33615-03-M-5605
Award Amount: $100,000.00
 

Abstract:

There is a need for the nondestructive diagnosis of micro-cracking in the composite skin of a honeycomb sandwich structure used in aircraft and space systems. We propose to use Differential Spectral Interferometry (DSI) as a noninvasive tool to quantifythe location and depth of micro-cracking in the composite skin. In DSI, the sample is irradiated with infrared light, which penetrates into the material. The back-scattered light, when combined with the reference light beam in the interferometer, producesan interference spectral fringe pattern - interferogram - that contains the depth information. The high dynamic range of DSI allows testing of materials which are opaque as seen by eye. We expect that the DSI method can be implemented in a relativelysimple and compact instrument, which can be used independently, or in combination with currently used inspection methods, such as ultrasound techniques. The market is sales of the instrument to the military and commercial organizations for inspection ofmicro-cracking damage in parts and structures made of composite materials. Benefits include enhanced aircraft safety and cost savings resulting from improved quality control during development and manufacture of composite parts and materials.

Principal Investigator:

Andrei Vakhtin
Senior Research Scientist
5059841322
avakhtin@swsciences.com

Business Contact:

Alan Stanton
President
5059841322
astanton@swsciences.com
Small Business Information at Submission:

SOUTHWEST SCIENCES, INC.
1570 Pacheco Street, Suite E-11 Santa Fe, NM 87505

EIN/Tax ID: 850340320
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No