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Measurement of three-dimensional vehicular motion to assess the dynamic performance of safety structures
(1992)
Measurements system of three-dimensional motion of an impacting vehicle were studied. Through the review of existing systems, a nine accelerometer array was found to be a both stable and economical system. This system ...
Mechanical characterization of nonlinear laminated composites with traverse crack growth
(1992)
A work potential based analysis was used to model damage related material nonlinearities in graphite-epoxy laminates. Two work potentials were incorporated. One potential was related to sub-ply damage, such as shear banding ...
Failure prediction of beryllium cross-rolled sheets by incorporating closure of cubic polynomial tensor
(1992)
Thin beryllium sheets are known to fail catastrophically when deformed by out-of-plane loadings. Primary objective of this study is to approach the overall problem of failure prediction from a macroscopic point of view. ...
Nonlinear three dimensional analysis of downdrag on pile groups
(1992)
The downdrag on pile groups was investigated by using a numerical analysis and an analytical study. The emphasis was on quantifying the reduction of downdrag on piles in a group due to the group effect. The case of a single ...
Development of a predictive model for pavement roughness on expansive clay
(1994)
Expansive clays are the major cause of differential movements in shallow foundations. In highway pavements they are responsible for cyclic distortion of the riding surface resulting in a loss of road handling ability and ...
A beam-column method for tieback walls
(1994)
A beam-column method for tieback walls or anchored walls was developed and tested. An instrumented full scale tieback wall in sand was constructed at the National Geotechnical Experimentation Site located on the Texas A&M ...
Modeling of colloid facilitated contaminant transport in unsaturated porous media
(1995)
The presence of mobile colloids in subsurface environments can enhance the contaminant migration in groundwater by reducing retardation effects. Because mobilized colloids have similar surface properties to that of ...
Assessment of relative impact of model uncertainty on the accuracy of nondestructive damage detection in structures
(1993)
This dissertation deals with the general problem of nondestructively detecting, locating, and sizing damage in structures via changes in modal responses of the structures. The objective of this study is to assess the ...
LATWAK : an impact test to obtain the lateral static stiffness of piles
(1994)
This study presents the development and application of a new method to predict the lateral static stiffness of piles. This new method is called LATWAK; it consists of a package including the LATWAK Test, the theory behind ...
Crack induction in CRC pavement based on fracture mechanics analysis
(1995)
An in-depth study of factors that affect crack initiation and