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Proceedings Paper

Thermographic Inspection Of Superplastically Formed Diffusion Bonded Titanium Panels
Author(s): David L. Haavig; Daniel C. King
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Paper Abstract

Infrared thermographic nondestructive inspection of superplastically formed diffusion bonded (SPF/DB) titanium structures is discussed. Nondestructive testing (NDT) of the structures produced by this recently developed method is vital for construction of modern fighter aircraft. Forming and bonding parameters can be optimized by proper interpretation of NDT results. Currently, ultrasonic inspection is used for NDT on these parts. In an effort to reduce cost and inspection time required by ultrasonic testing, a thermographic investigation of panel response to rapid heating was undertaken. Panels were uniformly illuminated for a duration of up to four seconds by high intensity lamps. Infrared images of temperature variation due to panel thickness were observed. Correlation of thermograms with ultrasonic and destructive investigations indicate that lack of bonding and panel formations can easily be observed. We have demonstrated that thermographic inspection provides an equally sensitive and lower cost alternative to ultrasonic inspection. Finally, thermographic inspection facilities for large scale inspection are suggested.

Paper Details

Date Published: 1 January 1988
PDF: 9 pages
Proc. SPIE 0934, Thermosense X: Thermal Infrared Sensing for Diagnostics and Control, (1 January 1988); doi: 10.1117/12.968492
Show Author Affiliations
David L. Haavig, McDonnell Douglas Corporation (United States)
Daniel C. King, McDonnell Douglas Corporation (United States)

Published in SPIE Proceedings Vol. 0934:
Thermosense X: Thermal Infrared Sensing for Diagnostics and Control
Ronald D. Lucier, Editor(s)

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