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Contamination removal using various solvents and methodologiesCritical and non-critical bonding surfaces must be kept free of contamination that may cause potential unbonds. For example, an aft-dome section of a redesigned solid rocket motor that had been contaminated with hydraulic oil did not appear to be sufficiently cleaned when inspected by the optically stimulated electron emission process (Con Scan) after it had been cleaned using a hand double wipe cleaning method. As a result, current and new cleaning methodologies as well as solvent capability in removing various contaminant materials were reviewed and testing was performed. Bonding studies were also done to verify that the cleaning methods used in removing contaminants provide an acceptable bonding surface. The removal of contaminants from a metal surface and the strength of subsequent bonds were tested using the Martin Marietta and double-wipe cleaning methods. Results are reported.
Document ID
19900004336
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Jeppsen, J. C. (Morton Thiokol Brigham City, UT, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1989
Subject Category
Nonmetallic Materials
Report/Patent Number
NAS 1.26:183747
TWR-18445-REV-A
NASA-CR-183747
Accession Number
90N13652
Funding Number(s)
CONTRACT_GRANT: NAS8-30490
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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