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Locating Cracks Amid Pitting and CorrosionUse of two fluorescent penetrants reveals cracks. New inspection technique for locating cracks in metal parts. Dual-dye technique used to inspect metal parts having surface-roughness-height ratings from 125 to 450 microinch (3.2 to 11.4 micrometer). Parts have included shot-peened machined aluminum extrusions; partially machined aluminum castings; aluminum, steel, and titanium tabular weldments; aircraft landing-gear components; chemically milled aluminum sheet and extrusions; and rough-machined aluminum and steel forgings. Also used on nonporous ceraminc parts.
Document ID
19860000269
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Fahey, P. P. (Fairchild Republic Co.)
Date Acquired
August 12, 2013
Publication Date
May 1, 1986
Publication Information
Publication: NASA Tech Briefs
Volume: 10
Issue: 3
ISSN: 0145-319X
Subject Category
Machinery
Report/Patent Number
MSC-20311
Accession Number
86B10269
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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