Print Email Facebook Twitter Evaluation of non-destructive inspection methods applied to milled step-down areas Title Evaluation of non-destructive inspection methods applied to milled step-down areas Author de Graaf, E.A.B. de Rijk, P. Institution National Aerospace Laboratory NLR Date 1978-09-29 Abstract The present report describes how fatigue cracks were produced in 102 specimens. After cracking these specimens were inspected non-destructively by means of eddy currents, ultrasonics. X-rays and penetrants, and the indications were recorded. Successively the specimens were exposed to corrosion whereafter the inspections were repeated. Upon completion of the second inspection cycle the specimens were opened up forcefully and the fatigue nuclei were measured visually from the fracture surface. All the data obtained by the various non-destructive inspections and the visual examination were translated onto punchcards for computer processing. The results are presented in a graphical form. Subject inspectionreliabilityeddy currentsgray inspectionpenetrantsfractographynondestructive testsultrasonic testscorrosioncrackswing panelsaluminium alloysfatigue (materials) To reference this document use: http://resolver.tudelft.nl/uuid:a668e573-0de9-4ee9-9d97-52af2eb8d943 Publisher Nationaal Lucht- en Ruimtevaartlaboratorium Access restriction Campus only Source NLR-TR 78110 U Part of collection Aerospace Engineering Reports Document type report Rights (c) 1978 National Aerospace Laboratory NLR Files PDF NLR_TR_78110_U.pdf 28.93 MB Close viewer /islandora/object/uuid:a668e573-0de9-4ee9-9d97-52af2eb8d943/datastream/OBJ/view