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 22 for “"Bench test"”.
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Evaluation of aged woodstove catalysts
… used in woodstoves to reduce emissions. Field tests of EPA-certified catalytic stoves have demonstrated that emission factors increase substantially after a few seasons of use, and catalyst degradation is a suspected cause. Previously, an in-field test developed to assess catalyst condition was …
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Energy Harvesting Hydraulically Interconnected Shock Absorber: Modeling, Simulation and Prototype Validation
… circuit model, which is then validated in a bench test. The theoretical model's validity was established by the bench test results, and the model was then applied to estimate system performance. To verify the effectiveness of the entire system design, a full car model outfitted with EH-HISA …
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Asymmetric Energy Harvesting and Hydraulically Interconnected Suspension: Modeling and Validations
… AMESim for preliminary study and validated in a bench test. The bench test results proved the authenticity of the theoretical model, and the model is then used to predict the system performance and guide the hardware construction. Based on the proven single cylinder model, and a full car model …
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A series-stacked architecture with isolated server-to-bus converters for high-efficiency data center power delivery
… Four 12V 120W Dell servers are used in the bench test to validate the operation of server-to-bus DPP. 98.99% efficiency is achieved while the servers are running a real-life data center computational load.
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Actively shielded air-core superconducting machines: optimization and design considerations
… racetrack coil are then described. Bench test results indicate successful operation at fields near 6 Tesla and a critical current of 480 A. Finally, a qualitative discussion on potential field analysis methods for future work is given.
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Two-Phase Boost Converter
… step-by-step the calculation, design, build and test of a Two-Phase Boost Converter. Calculations found in this paper were done on Mathcad and the simulations were done on LTSpice and Pspice. These include converter’s efficiency and other measures of converter’s performance. Advantages, …
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Using Vibration Analysis to Determine Refrigerant Levels In an Automotive Air Conditioning System
… determine this R-134a amount. Initial laboratory tests were completed and experimental modal analysis methods were investigated. This approach is based on the hypothesis that the natural frequency of the accumulator bottle is a function of the mass of refrigerant in the system. Applying this …
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Electromagnetic-thermal modeling for high-frequency air-core permanent magnet motor of aircraft application
… be presented, discussed, and verified with a bench test. The last step in EM-thermal modeling is using a simplified thermal equivalent circuit to quickly detect hotspot temperature and therefore to eliminate infeasible machine designs efficiently. Similar to EM modeling, rigorous thermal …
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Automatic 3D Neuron Tracing from Optical Microscopy Images.
… We curated a large dataset to train and test the model. The experimental results show it exceeds other counterpart approaches in most terms of evaluation metrics. At last, we propose a novel learning model for automatic neuron tracing, which learns to directly extracts the skeleton from a …
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Design and evaluation of a reaction-force series elastic actuator configurable as biomimetic powered ankle and knee prostheses
… joints, system specifications are verified using bench test evaluations, and preliminary human gait studies.
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Vertical compact torus injection into the STOR-M Tokamak
… the CT trajectory from horizontal to vertical. Bench tests have shown that a CT injected horizontally can be deflected effectively to the vertical direction. The velocity of 130 kmsˉ¹ has been achieved while the CT passes through the 90° curved drift tube. It was found that the CT magnetic field …
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Differentially fed active antennas
… exhibited higher gain and linearity in both bench test and radiated power test. Further improvement in linearity was reported by lowering the output resistance of the amplifier. Afterwards, a broadband antenna with stable radiation pattern and impedance was designed to carry out radiated …
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Evaluation of a Heat Flux Microsensor in a Transonic Turbine Cascade
… response of the directly deposited gage was also tested against insert gages using an unsteady shock wave in a bench test setup and using a laser of known output. The effects of physical gage offset from the blade surface were also investigated. The physical offset of an insert HFM near the …
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Pretreatment of Small Four-Stroke Engine Components for No-Oil Hot Tests
"Hot-tests" form a vital facet towards the end of the production line of modern automotive plants, where the condition of the engine is checked by running it for a short period of time, to ensure its performance under standard operating conditions. The duration of hot-tests for small engines varies …
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High Gain Low Power Operational Amplifier Design and Compensation Techniques
… Widlar architecture. The fabricated op amp test results show that the BSIM3 model in CADENCE Spectre Spice Simulation matches closely to the experimental results in spite of the low current weak inversion operation of the composite cascode output device and thus provide confidence in the …
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Design of a Novel Mechatronic System to Test Prosthetic Feet Under Specific Walking Activity Loads and Evaluate their Lower Leg Trajectory Error
… prosthetic foot would be through a mechanical bench test, but the capabilities of existing bench testing devices are insufficient due to limited degrees of actuation and reported accuracy. The purpose of this work was to design the Prosthetic Foot Testing Device (PFTD), a mechatronic testing …
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Mechanical Motion Rectifier Based Single and Hybrid Input Marine Energy Harvester Analysis, Design and Basin Test Validation
… full system was then designed, prototyped, and tested based on the MMR. The bench test results show that the proposed MMR based point absorber could improve the energy conversion efficiency by 10 percent, which brings feasibility to the implementation. Traditional Wave Energy Converter(WEC) can …
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Design, Analysis and Testing of a Self-reactive Wave Energy Point Absorber with Mechanical Power Take-off
… is investigated through design, analysis and testing to improve the energy harvesting efficiency and the reliability of the PTO. The MMR mechanism can transfer the reciprocated bi-directional movement of the ocean wave into unidirectional rotation of the generator. As a result, this mechanism …
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Rectangular waveguide narrow-wall longitudinal-aperture antenna arrays for high-power applications
This work deals with the design and bench test of rectangular waveguide narrow-wall longitudinal-aperture antenna arrays for high power applications. The best narrow-wall longitudinal-aperture array designs in the work are called the double-narrow-wall-slot-HPB-array and the …
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Helicopter rotor smoothing with a continuous trailing - edge flap
… is validated using the static structural bench test and wind tunnel test data from previous studies. The CTEF airfoil displacements are calculated for three different actuation voltages - 0 and ±750 V at different far-field velocities. Predicted deformation as well as aerodynamic …
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