A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effects of Surface Layer on Plastic Deformation and Crack Propagation
The rate of crack propagation was measured in three materials -- aluminum 2014-T6, titanium (6Al-4V), and 4130 steel. Cyclic loading tests were performed at room temperature with the ratio of minimum to maximum stress intensity K sub min/K sub max = 0.25. Center-cracked and Ripling specimens were used for plane stress testing while compact tension (CT) specimens were used for plane strain testing. The effect of prestress and surface layer elimination treatment was investigated. A significant reduction in the crack propagation rate was observed with this treatment. The improvement was maximum at low stress intensity values both in plane stress and plane strain conditions. The optimum improvement was observed in specimens that were prestressed just below the yield and the surface removed. (Author)
Effects of Surface Layer on Plastic Deformation and Crack Propagation
The rate of crack propagation was measured in three materials -- aluminum 2014-T6, titanium (6Al-4V), and 4130 steel. Cyclic loading tests were performed at room temperature with the ratio of minimum to maximum stress intensity K sub min/K sub max = 0.25. Center-cracked and Ripling specimens were used for plane stress testing while compact tension (CT) specimens were used for plane strain testing. The effect of prestress and surface layer elimination treatment was investigated. A significant reduction in the crack propagation rate was observed with this treatment. The improvement was maximum at low stress intensity values both in plane stress and plane strain conditions. The optimum improvement was observed in specimens that were prestressed just below the yield and the surface removed. (Author)
Effects of Surface Layer on Plastic Deformation and Crack Propagation
I. R. Kramer (author) / A. Kumar (author)
1971
70 pages
Report
No indication
English
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