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1999 Contents


INSPECTION OF AIRCRAFT COMPONENTS WITH THE AID OF PORTABLE DIGITAL SHEAROGRAPHY (1999)

ABSTRACT

Digital Shearography is an optical, non-contacting NDE inspection tool which can be used to detect material discontinuities and other defects within objects. The authors present a portable Digital Shearography Camera, which has just been completed and is currently undergoing evaluation. After presenting the preliminary results of laboratory based evaluation and testing of the Digital Shearography System, the authors report on the findings of the first on-site inspection, which was conducted at the regional airforce base in Cape Town. The results in the form of images exhibiting fringe patterns are presented, discussed and the presence or absence of flaws is highlighted. The performance and suitability of the Digital Shearography System for on-site application appears quite promising.

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