Re: ULTRASONIC TECHNIQUES : I NEED SOME INFO ON ULTRASONIC TECHNIQUES : FOR HIDDEN CORROSION DETECTION IN AIRCRAFT : WING SKIN AND DISBOND OF WING PANELS. . Hi Frankie,
These subjects make up a significant portion of our business here at SAIC Ultra Image International. We are currently doing work for the USAF involving hidden corrosion in aging aircraft using ultrasonic and eddy current methods. We also have much experience inspecting for disbonds in composite wing structures using ultrasonics. Please contact me at 860-442-0100 for further information. You may also want to visit our web site at http://www.saic.com/products/inspection/
00:59 Nov-21-2002 Dave Lines R & D, Diagnostic Sonar Ltd, United Kingdom, Joined Nov 1998 8
Re: ULTRASONIC TECHNIQUES : I NEED SOME INFO ON ULTRASONIC TECHNIQUES : FOR HIDDEN CORROSION DETECTION IN AIRCRAFT : WING SKIN AND DISBOND OF WING PANELS. . The NDE group at QinetiQ (previously DERA) in Farnborough have many years of experience with both ultrasonic and eddy current techniques on this type of application. They have reported on an ultrasonic technique for confirming that panel thinning is due to hidden corrosion (Smith, RA, Bruce, DA, 1998, An ultrasonic spectroscopy method for measuring the roughness of hidden corrosion surfaces, Proceedings of NDT'98, The British Institute of NDT, pp.167-170, ISBN 0 903132 26 5).
These techniques are applicable to area coverage by using high frequency integrated arrays specially developed by Diagnostic Sonar (for online info see http://www.bindt.org/Mk1Site/NDT2002Abstr2.html#Bending for recent abstract or http://www.galaxyscientific.com/agingaircraft/pdfs/6c/6c3d.pdf for an earlier full paper). These arrays can be used with flaw detectors or conventional mapping systems or with Diagnostic Sonar's Flaw Inspecta system (see http://www.ndt.net/article/v05n07/dlines/dlines.htm).