Model
Digital Document
Publisher
Florida Atlantic University
Description
This study investigated the stress corrosion cracking
behavior of aluminum alloy 7079 - T651 in two corrosive
environments, sea water and a 3% NaCl-distilled water
solution. Self stressing, double cantilever beam specimens
were employed; and these were stressed at various levels,
exposed in one of the two test environments and crack
extension monitored as a function of time. Equations for
the plane strain stress intensity factor (K1) were compared
and evaluated, with respect to stress intensities calculated
from compliance measurements. Results suggest that stress
intensity is not the only important variable controlling
crack growth rate and a time dependent cracking mechanism
may govern a portion of crack growth.
behavior of aluminum alloy 7079 - T651 in two corrosive
environments, sea water and a 3% NaCl-distilled water
solution. Self stressing, double cantilever beam specimens
were employed; and these were stressed at various levels,
exposed in one of the two test environments and crack
extension monitored as a function of time. Equations for
the plane strain stress intensity factor (K1) were compared
and evaluated, with respect to stress intensities calculated
from compliance measurements. Results suggest that stress
intensity is not the only important variable controlling
crack growth rate and a time dependent cracking mechanism
may govern a portion of crack growth.
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