Shearography nondestructive testing has evolved considerably since first used on a production aircraft program in the USA in 1986. Shearography laser interferometric imaging methods measure test structure deformation due to an applied engineered change in stress. The resulting changes in Z-Axis strain component reveal images of subsurface defects such as disbonds, delaminations, core defects and impact damage in aerospace structures. Shearography NDT provides high thru-put, cost-effective productivity enhancements, improved manufacturing processes and quality. Development of digital CCD cameras, the PC and small, high power solid-state lasers have led to dramatic performance improvements in shearography instruments and systems. Shearography is currently in use on a wide variety of aircraft including F-22, F-35 JSF, Airbus, Cessna Citation X, Raytheon Premier I and the NASA Space Shuttle. This presentation will provide a brief background on shearography NDT technology as well as recent developments in production and portable on-aircraft shearography inspection technologies and applications.
Aerospace NDT with advanced laser shearography
Raumfahrt-ZfP mit moderner Laser-Scherographie
2008
6 Seiten, 9 Bilder
Conference paper
Storage medium
English
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