Vibration Imaging Sensor for Damage Assessment in Composites (VISDAC)

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-11-C-0268
Agency Tracking Number: N093-169-0951
Amount: $999,953.00
Phase: Phase II
Program: SBIR
Awards Year: 2011
Solicitation Year: 2009
Solicitation Topic Code: N093-169
Solicitation Number: 2009.3
Small Business Information
23 Mauchly #109, Irvine, CA, -
DUNS: 828239769
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Gennady Tartakovsky
 Senior Scientist
 (949) 733-3355
Business Contact
 Debra Hadley
Title: Director of Administratio
Phone: (949) 231-9404
Research Institution
This proposal lays out a development program for a new laser Doppler vibrometer (LDV) instrument designed for non-destructive inspection (NDI) of composite airframe structures which are susceptible to core-crush damage, disbonds and delaminations, for example in composite rotor blades. The sensor employs non-contact laser vibrometry with acoustic excitation of the structure and uses the surface vibration signature as a means for locating and imaging hidden damage sites. Example data are presented from test panels which clearly illustrate the potential of the proposed approach which requires no advanced preparation of the inspection surface. Unlike existing laser vibrometers which employ a scanning single-beam approach, the proposed instrument employs a multiple-beam array to capture full-field (2D) vibration data instantaneously. The 2D imaging format is thus able to image short duration transient surface vibrations, a unique capability which could further enhance the NDI applications for the sensor. The rapid data capture, combined with the flexible fiber-optic design architecture provides for the first time, a viable platform for field based vibrometry for composite defect inspection.

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

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