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 71 for “"safety factor"”.
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Estimation of Uncertainties and Validation of Computational Models for Structural Concrete
… of computational models, and evaluate the model safety factor.
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Reinforcement Learning for Self-adapting Time Discretizations of Complex Systems
… rejected states. The Alpha-Beta Adjustment and Safety Factor Adjustment Model is the most efficient and accurate method for solving these mathematical problems. Allowing the model to change the alpha/beta value and safety factor by small amounts provides better results than if the model chose …
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Field and Laboratory Tests of a Proposed Bridge Deck Panel Fabricated from Pultruded Fiber-Reinforced Polymer Components
… strength tests, the first deck panel exhibited a safety factor with respect to legal truck loads of greater than 10. The second deck was subjected to AASHTO design loads, and under a simulated HS-25 axle plus impact the deck exhibited a maximum deflection of L/470. Upon completion of the …
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The folding Roboscooter : structural analysis for an electric scooter used in urban conditions
… under maximum load conditions to determine the safety factor of two of the frame components that experience the most stress: the front fork and the main folding pivot axle. Both elements were found to have a safety factor of two in their current design configurations, implying that design …
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A Mechanistic Analysis Based Decision Support System for Scheduling Optimal Pipeline Replacement
… of a pipe at any time in terms of a critical safety factor. The safety factor is defined as the ratio of residual strength to applied stress. For a conservative estimate the multiplier effect due to thermal and frost loads are considered. For a chosen analysis period, say 50 years, the pipes …
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Modelo estatístico para cálculo do Fator de Segurança Global de Estaqueamentos
… of Statistics, for calculation of the global safety factor. It's showed a practical example and the computer programs used for the simulation. This method is usable in rigid pile-head slabs, and in foundations set on rocks.
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Design and development of mechanical metatarsophalangeal joint for powered ankle-foot prostheses
… but that the Rubber Hinge design had a minimum safety factor of 5.7, 10, and 4.5 for the Toe, Inverted Heel Body, and Traditional Heel Body respectively and the Fabric Hinge Design had a minimum safety factor 1.4, 9.9 and 4.5 for the Toe, Inverted Heel Body, and Traditional Heel Body …
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Polarimetry measurements of current density profile and fluctuation changes during lower hybrid experiments on Alcator C-Mod
… density profiles (or poloidal magnetic field or safety factor) is essential to the understanding of the LH physics. A polarimeter measures the line-integral of the electron density times the magnetic field parallel to a chord through the plasma, and is capable of deriving the current density …
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Design of a tricycle chassis using computer-aided design and finite element analysis
… a chassis frame that is stiffer and has a higher safety factor than previous designs, but can still be made from low cost, locally sourced parts.
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A influência do módulo de deformação das camadas de solo em análises de estabilidade
… results may be more significant. The concept of safety factor is discussed and what it represents for each type of analysis. The methodologies were crosschecked between themselves and validated based on the results of an instrumented landfill constructed on soft soils on the coast of …
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Analyzing Inventory Placement of Low-Volume Items in Online Retail
… relevant metrics (review period, lead time, safety factor, etc.). The model closely mimics how a particular large online retailer functions. It can generate reports showing how costs and fill rates change with tweaks to specific inputs or methods of choosing how to allocate inventory. …
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Meta-analysis of Tokamak reactor designs
… of the plasma physics parameters such as beta, safety factor, temperature, density, and confinement time. The lack of significant change suggests that no major technological or physics breakthrough that could radically affect design philosophy has been discovered, and neither design philosophy …
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Towards the reliability prediction of mechanical components for nuclear safety cases
… components. Such predictions are used in nuclear safety case documentation that is required for a nuclear site license to be granted. The methodology proposed is the use of front-end Finite Element fatigue analysis using the ANSYS software to effectively evaluate the mechanical reliability of …
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An investigation of casing structural integrity in shale gas horizontal wells during hydraulic fracturing using FEA and machine learning algorithms.
… on casing lateral buckling /deformation, factors attributing to casing failure, failure mechanism, and the resulting failure mode in shale gas horizontal wells. The study covered casing types, failure modes and mechanism, and impact of material selection on casing failure, with the …
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Feasibility and cost analysis of private aircraft transportation for the University of North Dakota
… Dakota and analyze the costs involved.</p> <p>Safety of private aircraft transportation is discussed with emphasis on the added safety of flying in North Dakota. This additional safety factor is attributed to the low terrain, numerous airports and suitable flying weather in North Dakota.</p> …
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Lean manufacturing in a mass customization plant : improvement of Kanban policy and implementation
… a shorter lot size review period, larger safety factor and a new lot size decision making strategy based on historical demand.
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Improved quarry design using deterministic and probabilistic techniques
… as mining continues and permits calculation of safety factors and probabilistic reliability. Safety factor evaluations with the potential for back-analysis and sensitivity studies are included to investigate alternative high wall designs. Reliability analysis using Monte Carlo sampling minimizes …
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Reliability-based Design Optimization of a Nonlinear Elastic Plastic Thin-Walled T-Section Beam
… has the lowest possible weight for a prescribed safety factor (SF), and based on that design, the method obtains an improved optimum design that has either a higher reliability or a lower weight or cost for the same level of reliability as the deterministic design. Three failure modes were …
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A design for a flexible, low-cost rigging block for black-box theaters by Michael J. Shields.
… lift a 200 pound scenic load while providing a safety factor of 10:1. A dual-pulley arrangement allows for flexibility in the placement of rigging positions and better utilization of the available space. Top and bottom pulleys allow for lines to be routed above the level of the lighting grid. …
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ΑΝΑΛΥΤΙΚΕΣ ΜΑΓΝΗΤΟΥΔΡΟΔΥΝΑΜΙΚΕΣ ΙΣΟΡΡΟΠΙΕΣ ΤΟΡΟΕΙΔΟΥΣ ΑΞΟΝΙΚΑ ΣΥΜΜΕΤΡΙΚΟΥ ΠΛΑΣΜΑΤΟΣ ΣΥΝΤΗΞΗΣ
… OF FLOW ON THE PLASMA ELONGATION AND THE SAFETY FACTOR OF A TOKAMAK WITH FIXED AVERAGE TOROIDAL MAGNETIC ENERGY IS ALSO EXAMINED. THIRD, IN THE FRAMEWORK OF THE TAYLOR RELAXATION THEORY, FORCE FREE CONFIGURATIONS OF A LOW BETA SPHEROMAK ARE STUDIED FOR VARIOUS SHAPES OF THE FLUX CONSERVER. …
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