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Statistical Analysis Of Fracture Stresses Of Triaxial Porcelain Bodies, Robert E. Moore
Statistical Analysis Of Fracture Stresses Of Triaxial Porcelain Bodies, Robert E. Moore
Doctoral Dissertations
"Triaxial porcelain bodies containing various forms of silica, quartz, cristobalite and fused silica, were strength tested in bending. Significance tests were employed to discern real differences in the strength sample statistics caused by the various forms of silica. Firings were performed at three temperature levels. The differences in strength sample statistics were correlated to the microstructures of these silica porcelains.
A triaxial alumina porcelain body was employed as a model brittle solid for a study of the effect of flaw density on mean fracture stress. The flaws were introduced in the form of large diameter (d̄ = 115 microns) rounded …
An Investigation Of The Deformation Textures Of Cobalt, Roy Carl Wilcox
An Investigation Of The Deformation Textures Of Cobalt, Roy Carl Wilcox
Doctoral Dissertations
"Deformation textures of various cobalt structures as a result of cold rolling together with some annealing textures were studied. The textures of cobalt were determined using a modification of the Schulz-Decker Geiger counter technique. Pole figures of the (1011), (0001) and (1010) planes were constructed. Also, a study of the microhardness of cobalt was made.
Microhardness tests were performed on various cobalt structures, in both the cold rolled and unworked conditions. The microhardness was found to vary with the source of the cobalt, the crystal orientation, and the amount of deformation and twinning. Deformation lines about the hardness impressions diffused …