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Eddy-Current Damage Test for Carbon CompositesNondestructive test method detects cracks in materials of low conductivity. Test setup includes eddycurrent unit with frequency of 2 to 20 MHz/ and storage oscilloscope. High frequency required to assure depth of penetration less than substrate thickness, to prevent thickness from influencing reading. Eddy-current analysis confirmed by visual inspection as damaged area was sectioned and evaluated.
Document ID
19830000177
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Hamilton, A. B. (Vought Corp.)
Date Acquired
August 11, 2013
Publication Date
October 1, 1983
Publication Information
Publication: NASA Tech Briefs
Volume: 7
Issue: 4
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
MSC-20358
Accession Number
83B10177
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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