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Accession Number:
AD0843591
Title:
Suppression of Fatigue Cracking Through Control of Surface Conditions.
Corporate Author:
MIDWEST RESEARCH INST KANSAS CITY MO
Report Date:
1968-09-01
Abstract:
Coatings of polyethylene, polyvinylchloride, and evaporated A1 were tested for their effectiveness in suppressing fatigue damage in pure aluminum and 7075-T6 alloy. On pure aluminum, a polymer coating suppresses Stage I fatigue cracking if the coating is applied to a surface possessing a dehydrated oxide. On 7075-T6 alloy, a polymer coating has no effect. These results are discussed in terms of the water vapor effect on the elastic modulus of aluminum oxide and the resulting influence on near-surface dislocations. Author, modified-PL.
Descriptive Note:
Final rept. 1 Jun 66-31 May 67,
Pages:
0029
Contract Number:
AF 33(615)-1702
File Size:
0.00MB
