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 20 of 53 for “"multi pass"”.
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The multi-pass deformation of Ti-6Al-4V
… for the annealing of strip metal in between passes thus keeping the strip at a high temperature throughout processing. In this way, reversing passes can occur indefinitely until a desired gauge thickness is achieved. A steckel mill therefore represents a cheaper and faster method to produce …
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Dynamic economic dispatch of power systems by multi-pass dynamic programming
… Automatic Generation Control (AGC) by using the Multi-Pass Dynamic Programming developed in this research. The AGC of power systems coordinates the Load Frequency Control problem and the Economic Dispatch problem together to form a dynamic optimal control problem. A power system was partitioned …
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Numerical simulation of recrystallization behaviour of A1-1Mg during multi-pass rolling
… recrystallization behaviour of A1Mg for a three pass rolling process. Equations describing the recrystallization process are implemented into a Finite Element code, and the effect of changing the roll speed is investigated. The results indicate that further work is required to empirically …
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Design of a linear cavity and a characterization setup for multi-pass transmission electron microscopy
… necessary to build a linear cavity for multi-pass transmission electron microscopy are analyzed and simulated. Moreover, a prototype of the core component, the gated mirror, was designed and some preliminary experimental testings were carried out to asses its optical properties. Then, an …
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In-Situ Spectrocopy: Gas Mixture Analysis Using A Simplified Multi-Pass Capillary Cell and Optical Considerations In Dual-Pulse Laser-Induced Breakdown Spectroscopy Analysis of Bulk Aqueous Solutions
… fiber-optic Raman sensor coupled to a simplified multi-pass capillary cell (MCC). Improvements in the cleaning methods of the capillary tubes used to create the MCCs have resulted in higher quality silver coatings. Coupled with a filtered 24@1 fiber optical probe has resulted in detection limits …
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Μελέτη και σχεδιασμός μηχανισμού δρομολόγησης για δίκτυα αισθητήρων
… latency and the associated burden of multi-pass authentications. A novel mechanism called security binding is proposed that reduces the authentication delay of multi-pass authentications in a simple yet effective and secure manner. The focal point of the proposed mechanism is its …
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Membrane protein biosynthesis at the endoplasmic reticulum
… at the ER. To address this the biosynthesis of multi-pass IMPs was first considered. Multi-pass IMPs contain two to more than twenty TMDs, with TMDs that vary dramatically in terms of their biophysical properties such as hydrophobicity, length, and helical propensity. The beta-1 adrenergic …
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Time-resolved absorption spectroscopy of the rare gas dimer Rydberg states
… have been observed both through intra-cavity and multi-pass laser absorption spectroscopy.
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A Reference Frame Formulation for the Analysis and Design of Steady Manufacturing Processes
… drawing process is analyzed and optimized and a multi-pass rolling process is analyzed and designed.
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Effect of hot working characteristics on the texture development in AISI 430 and 433 ferritic stainless steel
The last seven hot rolling passes of the ferritic stainless steels (FSS) AISI 430 and AISI 433 (the latter an Al-added variant of 430) were simulated on Gleeble-1500D® and Gleeble-3800TM® thermo-mechanical simulators to investigate the effect of temperature, strain rate and inter-pass time on the …
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Structuring lute tablature and MIDI data: Machine learning models for voice separation in symbolic music representations
… modelling voice and duration simultaneously, and multi-pass processing using an extended (bidirectional) decision context. Two datasets are created for model evaluation: a tablature dataset, containing a total of 15 three-voice and four-voice intabulations (lute arrangements of polyphonic vocal …
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The application of quantum cascade lasers to mid-infrared gas sensing
… The capability to detect trace levels of multiple species in varying physical conditions, specifically high temperature is shown.Optical designs capable of allowing the measurement technique to be used in a variety of applications have been developed, specifically multi-pass gas absorption …
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Stress-density relationships for an agricultural soil
… and different confining pressures simulate the multi-pass effect of a tractor wheel loading on the soil. A volume measuring technique was developed to be used in triaxial tests conducted under high loading rates. A sandy clay agricultural soil was tested under predetermined conditions using an …
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Investigating effects of interpass time during hot finish rolling on the evolution of texture in AA3104 Can Body Stock
During the hot rolling of aluminium strips, inter-pass time variability along the strip length leads to non-uniform microstructure and texture development, which impacts material properties. This study investigated the microstructure and texture evolution in AA3104 can body stock (CBS) during hot …
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The Effect of Equal Channel Angular Extrusion (ECAE) and Boron Additions on the Mechanical Properties of a Biomedical Ti-Nb-Zr-Ta (TNZT) Alloy
… is examined using finite element techniques. Multi-pass ECAE processed samples were examined using optical and transmission electron microscopy, and subjected to tensile, fatigue, and wear testing. It was found that ECAE has a beneficial impact on all of the properties tested. The modulus …
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Nuclear fuel cycles for mid-century development
… fast gas cooled breed and burn reactors; single-pass recycle schemes: plutonium recycle in LWRs and direct-use of spent PWR fuel in CANDU reactors (DUPIC); multi-pass recycle schemes: transmutation of transuranics in LWRs, fast reactors, double strata systems, and molten salt reactors. Mass flow …
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Laboratory and Numerical Investigation for the Mobility of Ground Vehicles on Soft Clay
… conditions to mimic, in a simplified manner, multi-pass rolling tire loads. This numerical model will contribute to the understanding of the effectiveness of fiberglass mats in enhancing vehicle mobility and stability under heavy traffic loads.
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Development of optically interrogated diagnostic systems within materials ageing experiments
… developed were required to be suitable for multi-decade deployment and have minimal impact upon the experimental chemical ageing evolution. Optical fibre based diagnostic options for measuring temperature, barometric pressure, and gaseous concentrations were reviewed. The long-term …
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Effects of microstructure and strain ageing on toughness of nuclear PWR reactor weld metals
… toughness and cleavage fracture resistance of a multi-pass low-alloy ferritic steel weld metal have been investigated. The weld metal simulated submerged arc welds used in the fabrication of Sizewell B power station reactor pressure vessel. The study aimed to investigate differences in mechanical …
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One-Pass Learning via Bridging Orthogonal Gradient Descent and Recursive Least-Squares
… training typically requires iterating for many passes over the dataset. However, due to computational and memory constraints and potential privacy concerns, storing and accessing all the data is impractical in many real-world scenarios where the data arrives in a stream. In this thesis, we …
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