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 31 for “"safe design"”.
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Provably safe design of driver-assist systems through hybrid automata with hidden modes
… becomes necessary. A formal approach to the design of the driver assist system is taken, employing a hybrid automaton model. This model has hidden modes, which arise from the driver making decisions about whether or not to follow the provided warnings. As a consequence, the driver assist …
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Application of CAST and STPA to railroad safety in China
… The STAMP analysis revealed that the existing safety culture in the whole train organization, the Ministry of Railway and all its sub organizations in both the Train Development and Train Operation channels, do not meet the safety challenges involved in a high risk system like this- running …
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Comsol Modelling of Uniform Corrosion of Used Nuclear Fuel Canisters
… (DGR). To estimate the minimum thickness for safe design of canisters, it is necessary to analyze the corrosion rate. Copper Corrosion Model (CCM) has been used to model the corrosion process taking into account processes including adsorption/desorption, precipitation/dissolution, oxidation, …
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Experimental investigation of new coating methods for 3D-printed cathodes for hydrogen production
… respectively. A new flow-through electrode design introduced showed to have 70% higher efficiency than the coated 3D-printed electrode of the conventional design. 3D printing provides a safe design place for exploring unconventional electrode designs for improving electrolysis performance …
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Reliability model for ductile hybrid frp rebar using randomly dispersed chopped fibers
… cost of the proposed rebars, and to achieve a safe design by considering uncertainties in the materials and geometry of sections, appropriate material resistance factors have been developed, and a Reliability Based Design Optimization (RBDO), has been conducted for the proposed schemes.</p>
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Behaviour of non-prismatic steel members
… the key factors to be considered in structural design. In the last decade, non-prismatic steel members have proved to be more effective in structural design than the prismatic members, i.e. they have higher load carrying capacity when their geometry closely resemble the bending moment envelope …
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Lateral systems for tall buildings
… resources have allowed the efficient and safe design of increasingly taller structures. These structures are the consequence of increasing urban densification and economic viability. The modern skyscraper has and will thus continue to feature prominently in the landscape of urban cities. …
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Strength characterization of wood to wood connections using stress field analysis
… usage are two dominant aspects in structural design. As a building material, timber presents a cheap, renewable option. However, current practice favors steel connections for wood structures. Wood to wood connections offer a solution to the minimization of steel connections. While some …
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Thin-walled composite deployable booms with tape-spring hinges
… space applications. This dissertation presents a design methodology for lightweight composite booms with multiple tape-spring hinges. The whole process of folding and deployment of the tape-spring hinges under both quasi-static and dynamic loading has been captured in detail through finite element …
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Computational treatments for neutron resonance elastic scattering in Monte Carlo nuclear simulations
Simulations are vital to the safe design and operation of nuclear reactors. It is therefore important that they accurately treat the physics of nuclear interactions. This work investigates the phenomenon of neutron resonance scattering with a moving target, which can affect the post-collision …
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Investigating the Occurrence and Effects of Fragmentation: Analysis of Rockfall Videos Captured During Slope Maintenance Campaigns
… and potential trajectories are essential for the safe design of roads and railways. This is traditionally through analysis of the slope and historical rockfall data. Fragmentation results in a spreading effect of the fragments, and alters most factors used to approximate rockfall behaviour and …
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Some aspects of the analysis of offshore structures
… compared, the - objective being a realistic and safe design.<br/><br/>The sea is here represented by a wave amplitude spectrum, from which spectra for the forces on the structure are derived using a linear wave theory, in two ways. Firstly, using the well-known Morison equation, which requires …
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Rotating Vane Flow Measurement Techniques
… the capacitance change transducer has been designed to operate under discontinuous air and gas flow conditions in the presence of water vapour. The performance and calibration techniques for the flowmeter are discussed and comparisons provided with alternative sensor techniques. The design …
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The fatigue of welded butt joints in low carbon steel
… It appears essential therefore that the design data derived from experimental results should be presented in a meaningful way to aid the safe design of welded connections.<br/><br/>Fatigue tests were conducted on specimens cut from Jin. thick plate of medium carbon steel, over a range of …
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Novel techniques for fracture monitoring in crystalline rock
… is necessary in geotechnical engineering for the safe design of structures and application of engineering principles. Fracture plays a significant role in the behavior of rock and structures during failure. Often times, fracture processes observed in the laboratory do not accurately represent what …
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Deterministic casualty analysis of the Pebble Bed Modular Reactor for use with risk-based safety regulation
… the licensing structure will result in reduced design time and cost for new reactor plants. An improved regulatory process is also necessary in order to license advanced reactors that are not light water technology. Risk based reactor licensing, which uses the Probabilistic Risk Assessment (PRA) …
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Safe, intelligent and explainable self-adaptive systems
… and simultaneously must adhere to strict safety requirements. In addition, we need to trust those systems, as we will hand over control on our daily life to them. This increasing list of non-functional requirements makes the design of intelligent cyber-physical systems (CPS) a challenging …
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Dynamic behavior of operational wind turbines considering aerodynamic and seismic load interaction
… industry, the demand for a cost effective and safe design of wind turbine structures is growing rapidly. The wide deployment of wind turbines in locations with high seismic hazard has lead engineers to take into account a more comprehensive seismic design of such structures. In response to the …
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Experimental and Analytical Studies of the Behavior of Cold-Formed Steel Roof Truss Elements
… the North American steel framing industry. When designing cold-formed steel sections, a structural engineer typically tries to improve the local buckling behavior of the cold-formed steel elements. The complex hat shape has proved to limit the negative influence of local buckling, however, …
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Comparing Probabilistic and Fuzzy Set Approaches for Designing in the Presence of Uncertainty
… variability in parameters. In engineering system safety, examples are variability in material properties, geometrical dimensions, or wind loads. In contrast, fuzzy set models of uncertainty primarily describe vagueness, such as vagueness in the definition of safety. When there is only limited …
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