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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 300 for “"Thermomechanical"”.
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Thermomechanical Processing of Metallic Glasses
… modified after glass formation. Through various thermomechanical methods, it is possible to bring the glass either to a more relaxed, ordered state of lower energy – this process is called relaxation – or to a more unrelaxed, disordered state of higher energy, a process called rejuvenation. In …
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Thermomechanical effects in electronic packages
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1994.
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Thermomechanical responses of textured yarns.
Thesis. 1978. Sc.D.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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Thermomechanical processing of aluminum alloys.
Massachusetts Institute of Technology. Dept. of Metallurgy and Materials Science. Thesis. 1970. Sc.D.
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Thermomechanical property evaluation of molybdenum alloys
The ultra high temperature structural intermetallic molybdenum and its alloys were studied for their thermal properties and correlated to the material microstructure. Thermal expansion tests were carried out using thermo-mechanical analyzer (TMA). Thermo cycling tests were conducted around …
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Molecular Beam Epitaxy: A Thermomechanical Treatment
We perform a linear stability analysis, and consider the dependence of the growth rate of instability on the wave number. This dispersion relation is a function of many parameters that describe the elasticity and chemistry of the film and substrate. The analysis permits us to recover the classical …
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The thermomechanical response of oil shale
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1979
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Thermomechanical analyses of metal solidification processes
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Interfacial Thermomechanical Behavior of Hybrid Carbon Fibers
<p>The carbon fiber/epoxy interface is of great importance in composite design due to its load transfer mechanisms from the weak epoxy to the stronger fiber. Improving the strength of the interface reduces the risk of failure at the interface and improves the load transfer to the fiber. In this …
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Thermomechanical modelling of powder compaction and sintering
An elastic-visco-plastic thermomechanical model for cold forming of ceramic powders and subsequent sintering is introduced and based on micromechanical modelling of the compaction process of granulates. Micromechanics is shown to yield an upper-bound estimate to the compaction curve of a granular …
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Thermomechanical Stability of Automotive Clutches and Brakes
<p>Finite element analyses were performed to evaluate the stability thermal buckling existing in clutch disks. The commercial software ABAQUS had been used. It was discovered that monotonically increasing thermal loads constantly result in axisymmetric buckling modes. When the maximum values of …
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A Continuum Thermomechanical Model for Energetic Materials
The model is then simplified to a set of three model problems: the constant-volume thermal explosion, one-dimensional shear loading, and one dimensional longitudinal loading. These model problems were solved numerically using essentially non-oscillatory and total variation diminishing methods. The …
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Thermomechanical analysis of innovative nuclear fuel pin designs
One way to increase the power of a nuclear reactor is to change the solid cylindrical fuel to Internally and Externally Cooled (I&EC) annular fuel, and adjust the flow and the core inlet coolant temperature. The switch to annular fuel allows for a 20% increase in core power density without changing …
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Effects of Thermomechanical Refining on Douglas fir Wood
Medium density fiberboard (MDF) production uses thermomechanically refined fiber processed under shear with high pressure steam. The industry evaluates fiber quality with visual and tactile inspection, emphasizing fiber dimensions, morphology, and bulk density. Considering wood reactivity, the …
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Thermomechanical Response of Shape Memory Alloy Hybrid Composites
… sonic fatigue, and acoustic transmission. A thermomechanical model is presented for analyzing such shape memory alloy hybrid composite (SMAHC) structures exposed to thermal and mechanical loads. Also presented are (1) fabrication procedures for SMAHC specimens, (2) characterization of the …
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Thermomechanical and Vibrational Fatigue Life Assessment of Railway Wheels
… major failure was accurately predicted by the thermomechanical FEA analysis. Subsurface failures that occurred in the circumference of the wheel are predicted by the vibrational FEA fatigue analysis. Hence, this FEA methodology can be employed for any wheel to estimate the fatigue life in the …
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Thermomechanical factors influencing weld metal hydrogen assisted cold cracking
… pass of girth welds. This thesis explores the thermomechanical factors influencing the formation of Weld Metal Hydrogen Assisted Cold Cracks (WMHACC) in High Strength Low Alloy line pipe steel when welded with cellulosic electrodes using the Manual Metal Arc Welding process. The overarching …
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An investigation into thermomechanical fatigue of metal matrix composites
… approaches are used to characterize the thermomechanical deformation behavior of metal matrix composites. Experiments on unreinforced and SiC particulate reinforced Al 2xxx-T4 have been conducted under several mechanical strain-temperature phasing conditions. Based on stress range, …
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Thermomechanical forming of steel plates using laser line heat
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.
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