Development of NDE to monitor bond degradation in aircraft honeycomb components
- Aeronautical and Maritime Research Laboratory, DSTO, GPO Box 4331, Melbourne, Victoria 3001 (Australia)
This paper presents results of recent research at DSTO Aeronautical and Maritime Research Laboratory to develop NDE techniques to assess bond degradation in metal-skin honeycomb and composite skin honeycomb control surfaces. In particular, it covers the detection of fillet bond failure where the honeycomb core and adhesive separate. Realistic fillet bond failure specimens, one of which had only 20% of the good bond strength, were generated by the application of spray-release agent to the honeycomb. 20MHz ultrasonic pulse-echo imaging was successfully used to detect fillet bond failure in these specimens. This technique was successful in detecting defined areas of fillet bond failure for a range of skin type and thickness Promising results were also obtained for the application to actual components, whilst also highlighting effects due to the presence of repairs. Further work will involve the evaluation of a range of other NDE methods to the detection and sizing of fillet bond failure.
- OSTI ID:
- 21207674
- Journal Information:
- AIP Conference Proceedings, Vol. 497, Issue 1; Conference: 9. international symposium on nondestructive characterization of materials, Sydney (Australia), 28 Jun - 2 Jul 1999; Other Information: DOI: 10.1063/1.1302031; (c) 1999 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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