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Now showing items 21-30 of 36
Evaluation of drilled circuit boards using scanning white light interference microscopy
(Texas A&M University, 1996)
The evaluation of drilled circuit board holes has traditionally involved examining the cross-section of a hole using an optical or scanning electron microscope. The objective of this thesis was to compare the use of a ...
Elastic-Plastic deformation studies in 4140 steel using the critically refracted longitudinal (Lcr)wave technique
(Texas A&M University, 1996)
The critically refracted longitudinal (LCR) wave ultrasonic technique has been used to investigate a typical turbine disk material in the elastic-plastic region. Both applied tensile stress and residual strain effects are ...
A configuration and analysis for damping oscillations in flexible robotic arms using passive elements
(Texas A&M University, 1996)
A hardware configuration that reduces excessive oscillation in flexible robotic arms is presented and analyzed. An experimental apparatus was constructed and proved to effectively damp unwanted oscillations using passive ...
A comparison of eddy current effects in a single sided magnetic thrust bearing
(Texas A&M University, 1996)
Modern uses of rotating shafts depend upon bearing speeds and temperatures that exceed normal operating parameters. In order to accommodate these excessive parameters, magnetic bearings have replaced ball or thrust bearings. ...
Model of calcareous deposit formation on cathodically protected steel in seawater: improvements and extensions
(Texas A&M University, 1996)
A mathematical model of calcareous deposits on cathodically protected steel in seawater has been improved for practical applications. The model can be used in industry and as a pedagogical tool. The model extracts useful ...
The displacement field characterization of two interacting parallel edge cracks in a finite body
(Texas A&M University, 1996)
The goals of this research were to: (1) develop a model to represent the displacement field surrounding two interacting, parallel edge cracks; and (2) use this model to investigate the influence of crack separation and ...
Aerosol Penetration Through Transport Lines
(Texas A&M University, 1996)
It is very important to minimize the losses in aerosol transport systems for the Continuous Air Monitors (CAM) to have a prompt and a meaningful alarm and the U.S. Environmental Protection Agency (EPA) also Currently ...
The effect of moisture on a glass/epoxy composite
(Texas A&M University, 1996)
Research was done to determine the effect of moisture on the transverse tensile strength and the interfacial shear strength of a glass/epoxy composite. Specimens with two different fiber sizings, one epoxy compatible and ...
A parametric study of thermomechanical behavior of functionally gradient materials
(Texas A&M University, 1996)
The dynamic thermoelastic response of functionally gradient cylinders and plates is studied. Thermomechanical coupling is significant in these materials when they are used in high temperature applications, and hence, the ...
The constitutive modeling of nitrile elastomers
(Texas A&M University, 1996)
A method for modeling the transient stress relaxation and creep behavior of acrylonitrile butadiene rubber has been developed. The behavior of the material is characterized through the use of transient stress relaxation ...