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 76 for “"maximum load"”.
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Diluted Operation of a Heavy-Duty Natural Gas Engine - Aiming at Improved Effciency, Emission and Maximum Load
… lower density of natural gas results in lower maximum power level. In this thesis key features and strategies which may result in improved efficiency, increased maximum power and improved transient capability of a heavy-duty natural gas engines have been identified, validated and suggested. …
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STRUCTURAL RETROFITTING OF CONCRETE BEAMS USING FRP - Debonding Issues
… the experimental data regarding failure mode and load-displacement behaviour. The influence of several parameters such as length and width of FRP and properties of the adhesive were investigated. The result showed that when the length of FRP increases, the load capacity of the beam increases for …
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Effects of reinforcement corrosion on the structural performance of reinforced concrete beams
… is measured by establishing its effect on the maximum load carrying capacity, the deflections, energy requirements and ductility ratio. The main conclusions made in respect of the effect of reinforcement corrosion are that it causes: a decrease in the load carrying capacity; an increase in the …
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Design zero-voltage switching DC-DC buck converter
… to convert 12V input voltage to 5V at 1.5A maximum load current at 50MHz switching frequency. The converter has been simulated using an ORCAD 16.5 based simulation tool and result show that the switching losses using zero�voltage-switching technique is less compared to conventional buck …
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An assessment of the fracture toughness of two cast and wrought stainless steels
… range 400-800°C. The measurement of a maximum load crack-tip displacement in a notch bend test, provided a good indication of fracture-toughness since it included a portion of slot: crack-growth. The ability of these alloys to tolerate slow crack-growth, and even to arrest cracks …
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RF signal inductors in iUHD for voltage controlled oscillators in configurable RF integrated circuits
… made to RF integrated circuits by increasing the maximum load impedance seen by the VCO.
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Modelling the structural behaviour of the fold-away shelter
The F-shelter underwent non-destructive monotonic load tests and destructive shake table test. The timber-framed shear walls with different sheatings; namely wood wool cement boards (wwcb) and F11 structural plywood were tested under uniaxial loading. Furthermore, finite element models (FEM) …
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The sensitivity of composite scarf joints to the height of the blunt tip
… as the finite thickness of the joint affects the load traveling through the joint. At the corner of the blunt tip, there are large gradients of longitudinal and shear strain that dissipate along the length of the bondline and away from the blunt tip and this magnified strain at the corner is not …
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Analysis of acoustic emission waveforms from fatigue cracks on a steel bridge hanger
… under variable amplitude tension-tension fatigue loading, results of which were used to aid in the interpretation of AE data from the hanger. Crack growth AE were detected only on overload cycles mostly above 92% of maximum load while AE due to crack face rubbing occurred throughout the strain …
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Analysis and comparison of the South African and Eurocode live load models for railway bridges
… Transport Services (SATS) and Eurocode (EC) live load models for railway bridges. The study is specifically concerned with the critical load effects of shear and bending moment. The load models are simulated as moving loads over the full length of simply supported and continuous railway systems …
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Design and control of a linear bearing durability tester
… characteristics of linear bearings under high load and high speed conditions, a machine capable of testing bearings under these conditions was created. The machine is flexible in its design, allowing testing of a wide variety of bearing styles and under many different load conditions. The …
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Exploring the Mechanical Behavior of a Traditional Japanese Joint for Flexible Structural Design
… beam. A surprising increase in ductility and maximum load resisted by the iterations with 50% and 70% volume reductions is observed. This finding underscores how modifying the end beams significantly influences the overall behavior of the splice mechanism.
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Optimal Parameter Values for Accurate and Repeatable Nanoindentation of Human Trabecular Bone
… thermal drift correction time, dwell time, and loading rate that can be used to obtain accurate and repeatable material properties from human femoral trabecular bone through experimentation and statistical analysis. All testing was conducted using a single nanoindenter on a single trabeculae, …
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Failure and crippling of graphite-epoxy stiffeners loaded in compression
… behavior prior to failure. The buckling loads for each specimen were also calculated by a computer code and compared to experimental buckling loads. Good correlation was achieved for specimens that did not buckle as columns. The graphite-epoxy specimens which buckled locally had …
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Investigation of the forces produced by impact
… which may be subjected to suddenly applied loads is the determination of the actual forces which the members must withstand. This investigation has been confined to a study of impact forces on beams in simple flexure. Margerum (American Society of Testing Materials, 1922) suggested a method …
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The Development of a Phase Locked Wind Turbine Blade Finite Element Model to Predict Loads and Deflections During Fatigue Testing
… systems. These systems do not allow for the load phase angle to be controlled, and the maximum load application in the edge and flap directions are allowed to vary. The PhLEX (Phase Locked Excitation System) under development utilizes a resonant excitation system in order to reduce hydraulic …
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Building a Better Pedestrian Flow Model for the Indianapolis Motor Speedway
… the optimal pedestrian throughput under maximum load conditions. This data was therefore used to identify the processing time standard required in order for security personnel to achieve steady-state flow, which allowed for adequately conducted security checks, and reduction of patron …
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Análise do comportamento não linear geométrico e físico de pórticos planos de concreto armado
… of forces and displacements for a definite loading, as well as for a research on load-bearing capacity, in which its non linear performance is analysed for each loading intensity, until the structure maximum load-bearing capacity is obtained. At the end of this study, a few examples and …
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Energy management of vehicle collision forces on automotive seats
… back. The damper is designed to withstand the maximum collision forces resulting in front collisions at 30 mph and rear collision at 11 mph. The maximum chest load on an occupant in these collisions is approximately 5,000 lbs. A resulting maximum load of up to 13,900 lbs is exerted on the …
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An investigation of the effects of cold working upon copper
… is desirable to know how the elastic limit, the maximum load, and the plastic working limit vary as the degree of cold drawing increases.
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