Global ETD Search
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 11 of 11 for “"microstructure model"”.
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Development of Simultaneous Transformation Kinetics Microstructure Model with Application to Laser Metal Deposited Ti-6Al-4V and Alloy 718
… the same time, deployment of integrated process-microstructure models has remained as a challenge due to some of the reasons listed below: (1) lack of good process models to consider the laser-material interactions; (2) inability to capture all the heat transfer boundary conditions; (3) …
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A study of two dimensional braided composites
A microstructure model of 2-D braided composite is developed. The fiber volume and crimp angle are evaluated by this model and are compared with experimental results. The maximum fiber volume fraction is also obtained. Effective stiffness of 2-D braided composite is obtained in a close form by the …
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Object Oriented CAE Software for the Exploration and Design of Microstructures
… functions a spectral representation is used to model the microstructure of cubic materials. This model is then used to predict the macroscopic elastic and plastic properties of materials with cubic crystal symmetry and various sample symmetry including triclinic and axial—symmetric. Building on …
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Investigation of effect of process parameters on multilayer builds by direct metal deposition
… deposition parameters of deposited layers on the microstructure and mechanical properties of the previously deposited layers. Varying the parameters was shown to produce different effects on the microstructure morphology and property values, presumably resulting from in-situ quench and tempering. …
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Modelling the fracture of advanced carbon and related materials
… the development of a novel computational model which is used to simulate the mechanical response of nuclear graphites on a microstructural scale. Application of finite element analysis (FEA) to the simulated microstructure models allows for the determination of material properties and …
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Investigation of the Colloidal Behaviour of Carbon Black and Perfluorosulfonated Ionomer in Various Solvents
… would lead toward the development of an improved microstructure model of catalyst layer of polymer electrolyte membrane fuel cells. Ionomer aggregation behaviour in solution was investigated at different ionomer concentration, solvent type and solvent composition. Ionomer was found to exist in …
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Applications of Geopolymer in Civil Engineering: Feasibility Study of Loess Stabilization and Waste Concrete Recycling
… With the integration of composition and microstructure, a four-tier conceptual microstructure model is proposed to elucidate the origin of loess collapsibility. Based on the understanding of the origin of the collapsibility, the feasibility study of loess stabilization with geopolymer is …
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Thermal and Microstructure Modeling of Metal Deposition Processes with Application to Ti-6Al-4V
… using LMD methods is understanding the complex microstructure evolution as a part is fabricated layer by layer. The current work focuses on the characterization, thermal, and microstructural modeling of multilayered Ti-6Al-4V deposits. A thermal model has been developed using finite difference …
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Stochastic Point Process Modeling for Engineering Applications
<p>Hawkes model or self-exciting point process model is a branching point process model. The model classifies the dataset of discrete events to background and offspring events. It has been used to study interconnected events in many fields, but relatively little work exists in applying these …
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The accuracy of financial analysts and market response
… from another perspective, we follow a market microstructure model and use intraday market data to estimate the probability of an information event, the probability of good or bad news, and the rates that different traders arrive at the market. By comparing those estimates based on days with …
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Mechanism and applications of elastic actuators
… made using nylon fishing lines. A mathematical model combining the material aspect and mechanics aspect of the coiled shape of the TCPA is proposed. The microstructure model describes the behavior of the highly strained semi-crystalline material after thermal treatment. This model captures the …