NASA NTRS · 19710000270
Qualifications and certification of nondestructive testing personnel
Abstract
Personnel handbook states criteria for test methods including radiation, ultrasonics, eddy current, liquid penetrant, and magnetic particle. Subject categories are thoroughly defined and substructured.
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Kirk, M. K.. 1971-08-01. Qualifications and certification of nondestructive testing personnel. https://ntrs.nasa.gov/citations/19710000270
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