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14 November 1996 Origin and evolution of NDE reference standards
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Standards are available for all NDT methods, but not many can be used for aircraft maintenance inspection, whether it is for aging aircraft or not. An ultrasonic standard for aluminum to calibrate the instrument for contact inspection is overdue. There is lack of requirements for visual inspection, except for the yearly eye examination. The inspectors should have a better understanding of the nature and origin of fatigue failures, corrosion and where, why and how it can occur.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kermit Skeie and Henry J. Ridder "Origin and evolution of NDE reference standards", Proc. SPIE 2947, Nondestructive Evaluation of Utilities and Pipelines, (14 November 1996);

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