Browsing by Subject "tribology"
Now showing items 1-12 of 12
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(2017-05-10)In comparison to vertical hole drilling, recent explorations of ERD wells and use of horizontal drilling strings has significantly increased the drag and torque as well as wear on the drill string, drill column, casings ...
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(2016-12-14)This research investigates the influence of morphological characteristics on tribological performance of lubricating grease. The use of grease as a semi-solid lubricant has been well established in reducing friction and ...
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(2013-07-22)This research investigated the tribological performance of a composite material, formed from an ultra high molecular weight polyethylene (UHMWPE) matrix and quasicrystalline Al-Cu-Fe alloy powders. An evaluation was conducted ...
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(2014-08-20)With the ongoing research and development of nanoscale technologies and materials, it becomes increasingly important to understand how local environment influences molecular and material properties. An important factor in ...
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(2014-08-06)The present study is focused on accurate prediction of Morton effect problem including journal asymmetric heating and the corresponding long period amplitude oscillations using a nonlinear time transient rotordynamic ...
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(2009-05-15)This research studies individual and combined effects of hydrogen gas exposure and low temperature on the tribological characteristics of Ti-6Al-4V. Experimental approaches include test system modification and tribological ...
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(2015-09-30)The research objective of this project is to investigate the unique combinations of material property and topology gradients exhibited within a class of nature’s hierarchical material systems, which are optimized to achieve ...
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(Texas A&M University, 2007-09-17)This thesis includes two parts. The first part reviews the history and fundamentals of surface science and tribology. The second part presents the major research outcomes and contributions. This research explores the aspects ...
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(2010-07-23)This thesis research investigates the surface properties and performances of gold nanoparticles, microarc oxidation coating, and epitaxial nano-twinned copper film. The research aims to understand the critical behavior of ...
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(2009-05-15)Mechanical forces can be used to trigger chemical reactions through activating bonds and to direct the course of such reactions in organic materials, particularly in polymers. In inorganic materials, the small molecules ...
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(2009-05-15)This research investigates materials for bone-joint failure repair using tribological and biomimicking approaches. The materials investigated represent three different repairing strategies. Refractory metals with and without ...
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(2013-08-02)New nanomaterials and nanoparticles are currently under investigation as lubricants or lubricant additives due to their unusual properties compared to traditional materials. One of the objectives of this work is to investigate ...