The Atlas Mountains of North Africa, located in the African foreland of the Alpine mountain belts, comprise a 2,000 km long Cenozoic mountain chain whose development was guided by older Mesozoic rift structures. This dissertation examines one component, the Middle Atlas Mountain…
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Horizontal velocity gradient tensor field in the western U.S is estimated using moment tensors of earthquakes between 1850 to 1995. The velocity vectors obtained from the integration of the seismic strain rates across the entire plate boundary lie within 5° of the NUVEL-1A Pacif…
Raman spectroscopy has been used to monitor the deformation of natural cellulose whisker polymer nanocomposites. Cotton and tunicate whiskers were used as reinforcements in polymer matrices. Raman spectra from the nanocomposites highlight an intense band located at the 1095 cm-1…
Tooling design is crucial for the production of cost-effective and durable composite products. As part of the current search for cost reduction (by reducing capital investment, energy use and cycle time), integrally-heated tooling is one of the technologies available for ‘out-of…
Early warning of slope instability will enable evacuation of vulnerable people and timely repair and maintenance of critical infrastructure. However, currently available warning systems are too expensive for wide-scale use or have technical limitations. The acoustic emission (AE…
Deformation monitoring results are reported here for the period 1988-1998 at Merapi volcano, one of the most active and dangerous volcanoes in Indonesia. Comprehensive databases of various geophysical parameters were concurrently studied and analyzed to 2000, and similar data we…
This thesis represents a mixed computational formulation of Finite Element, Finite Difference and Boundary Element Methods for solving problems of finite strain elastoplasticity in 3D. For geometrical nonlinearity the Total Lagrangian Formulation and for material nonlinearity th…
The primary goal of this study was to evaluate the effect of martensite plasticity on the deformation and fracture behaviour of an intercritically annealed commercial low carbon (0.06 wt.%) dual phase steel. The volume fraction and the morphology (banded and almost equiaxed) of …
The contribution of this thesis is to expand the current knowledge of deformation mechanisms in mineral phases of the lower mantle, the D" region, and the inner core. Quantitative information about texture and stress is obtained using in-situ radial synchrotron x-ray diffraction…
Images of surface displacements in response to tectonic forces can provide independent, spatially dense observations that assist in understanding sub-surface processes. When considered independently or augmented with more traditional observations of active tectonics such as seis…
The deformation of a plate due to boundary stresses is investigated using both the elastic and viscous models for plate deformation. The role of basal shear stress (at the lithosphere-asthenosphere boundary), oblique convergence and strength inhomogeneity are investigated for mo…
The geotechnical engineering field is full of large deformation problems, ranging from settlements caused by human constructions to naturally occurring landslides. Modeling these problems is therefore of paramount importance for risk management and improved understanding of soil…
It is true that most monsters are just figments of the human imagination, but monster stories and monster images have been part of human culture since the very beginning of civilization. They scare and mystify but at the same time they attract. The source of monsters is in our h…
An exurb is a district beyond the suburbs and well beyond the city center that can be characterized as a transitional zone from the urban fringe to the rural pastoral, fitting somewhere in between. The American exurbs originally emerged as growth centers that were the outcome of…
Advanced Polymer and Ceramic Matrix Composites (PMCs and CMCs) are currently employed in a variety of airframe and engine applications. This includes PMC jet engine fan cases and CMC hot gas path turbine components. In an impact event, such as a jet engine fan blade-out, PMCs ex…