Thesiss

Seismograms are synthesized for models with arbitrary spatial variations in compressional- and shear-wave quality factors (Qp and Qs), as well as in density (ρ) and compressional- and shear-wave velocities (Vp and Vs). Q effects, including their interaction with Vp, Vs, and ρ, c…

Alloy castings are usually solidified with a coarse columnar grain structure under normal casting conditions unless the mode of the solidification is carefully controlled. It is desirable for the grain structure to be fine and equiaxed to improve their mechanical performance as …