Browsing by Author "Hartwig, Karl T."
Now showing items 1-20 of 25
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Luo, Xue (2012-07-16)Fatigue cracking is one of the most common distresses of asphalt pavements, whereas healing is a counter process to cracking which alleviates cracking damage and extends fatigue life of asphalt pavements. Most of existing ...
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Gehring, Dominic F. (2020-12-02)Thermal expansion control is key to further optimization of systems with large heat gradients or changes in temperature, and where extreme precision is required. Manipulation of this property in materials has traditionally ...
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Reza, S.M. Mohsin (2009-05-15)Design options have been evaluated for the Modular Helium Reactor (MHR) for higher temperature operation. An alternative configuration for the MHR coolant inlet flow path is developed to reduce the peak vessel temperature ...
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Murudkar, Rahul R. (2010-10-12)Equal Channel Angular Extrusion (ECAE) has great potential for developing ultrafine grain structure consisting of homogeneous and equiaxed grains dominated by high angle grain boundaries. In addition, the ECAE-processed ...
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Modarres Razavi, Sonia (2012-02-14)Magnesium and its alloys have been considered as alternatives to aluminum alloys and steels for structural applications in automotive and aerospace applications due to their superior specific strength and light-weight. ...
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Fu, Engang (2010-10-12)High energy particle (neutron, proton and He ions) irradiation to materials typically leads to deteriorating properties, including void swelling, blistering, embrittlement, fracture and exfoliation of surfaces. This ...
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Hu, Liangfa (2015-03-30)Advances in various aerospace and energy technologies call for new, multifunctional materials capable of operating under conditions that are challenging to the most advanced high-temperature metallic alloys. Composites ...
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Bryant, Don O. (Texas A&M University, 2007-04-25)This research investigated the effectiveness of equal channel angular extrusion (ECAE) and annealing to improve the grain morphology and mechanical properties of electron-beam remelted pure niobium. Extrusions were performed ...
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Takahashi, Akihiko; Yasuda, Hitoshi; Hartwig, Karl T.; Mcdonald, Lacy C.; Zou, Hong (United States. Patent and Trademark Office; Texas A&M University. Libraries, 1996-11-12)The aluminum conductor having increase of its electric resistivity kept small at ultra low temperature of 30° K. or lower even after cyclic strain is given at ultra low temperature, by controlling the crystal structure of ...
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Kumar, Parikshith K. (2010-07-14)Most e orts on High Temperature Shape Memory Alloys (HTSMAs), have focused on improving their work characteristics by thermomechanical treatment methods. However, the in uence of transformation induced plasticity (TRIP) ...
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Rocha-Zapata, Aracely (2012-10-19)This research investigates the interfacial interactions between biological entities and synthetic materials at two length scales: bulk and nanometer size. At the bulk scale, biomolecule adhesion is key for synthetic material ...
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Yang, Wei (2012-02-14)Clad metals are extensively used for their multi-functionality and their optimal combination of quality and cost. Roll bonding is an effective and economic processing approach to making clad metals. This dissertation ...
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Jamison, Brandon Parker (2012-02-14)The recent changes in the Texas Department of Transportation (TxDOT) hot mix asphalt (HMA) mix design procedures to ensure that the mixture types routinely used on Texas highways are not prone to rutting raised concerns ...
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Yegin, Cengiz (2012-07-16)Ni-Co-Mn-In system is a new type of magnetic shape memory alloys (MSMAs) where the first order structural and magnetic phase transitions overlap. These materials can generate large reversible shape changes due to ...
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Al Maharbi, Majid H. (2011-02-22)Hexagonal closed packed (hcp) materials, in contrast to cubic materials, possess several processing challenges due to their anisotropic structural response, the wide variety of deformation textures they exhibit, and limited ...
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Li, Nan (2011-08-08)High energy neutron and proton radiation can induce serious damage in structural metals, including void swelling and embrittlement. Hence the design of advanced metallic materials with significantly enhanced radiation ...
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Gonzalez, Jeremy (2012-10-19)Bulk nanocrystalline 304L and 316L austenitic stainless steels (SS) were produced by equal channel angular pressing(ECAP) at elevated temperature. The average grain size achieved in 316L and 304 L SS is ~ 100 nm, and grain ...
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Huitink, David Ryan (2012-10-19)In this research, for the first time, a novel nanofabrication process is developed to produce graphene-based nanoparticles using mechanochemical principles. Utilizing strain energy at the interface of Si and graphite via ...
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Takahashi, Akihiko; Yasuda, Hitoshi; Hartwig, Karl T.; Mcdonald, Lacy C.; Zou, Hong (United States. Patent and Trademark Office; Texas A&M University. Libraries, 1997-04-01)The aluminum conductor having increase of its electric resistivity kept small at ultra low temperature of 30° K. or lower even after cyclic strain is given at ultra low temperature, by controlling the crystal structure of ...
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Anderoglu, Osman (2011-08-08)The focus of this research is the development of high strength, high conductivity copper films. Pure copper is soft and traditional strengthening mechanisms cause substantial decrease in conductivity. To address the ...