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 361 for “"Experimental Testing"”.
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Experimental testing of LIGO vibration isolation system
The LIGO (Laser Interferometer Gravitational-wave Observatory) project is designed to detect gravitational waves using precision interferometry. The detection from astrophysical sources has the potential to test Einstein's Theory of General Relativity, and additionally open a new window into the …
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Design and experimental testing of metamaterial-based agitators
… with a commercial extruded heat sink where experimental testing was conducted to investigate the validity of the modified configuration. Vortex-induced vibrations (VIV) of structures have attracted much attention these years due to its application in many engineering disciplines. Taking …
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Simulation and Experimental Testing of Additively Manufactured Strain Gauges
Additive manufacturing has seen a rapid increase as a method of fabricating both design phase prototypes and end-user products. The increase in development of the technology has driven the development of new products such as conductive 3D printer filaments that can be used to fabricate electrically …
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Heterogeneous nanocomposite adhesive: Experimental testing and computational multiscale modeling
… for characterization and modeling. The experimental testing of this composite adhesive with unique characteristics then also provides support for the development of open issues in multiscale heterogeneous adhesive models.
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Experimental testing of bimetallic and reactive shaped charge liners
A series of 13 shaped charge tests was conducted. The primary objectives were to investigate small scale bimetallic and reactive liners and to record the target deformation characteristics of larger scale reactive liners. Tests 1 - 9 used liners of 20.02 mm diameter and were conducted in either a …
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Experimental testing and modeling of partial nitrification at different temperatures
… process at 10oC was analyzed. Furthermore, experimental data from different literature studies was used for model simulation ii and the model prediction fitted experimental data well. The model provides a method to identify feasible combinations of pH, DO, total ammonium nitrogen (TAN), …
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Next generation triaxial apparatus using combined computational-experimental testing framework
This Dissertation was approved for publication on 2017-04-21 at 17:24.
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Tire Contact Patch Characterization through Finite Element Modeling and Experimental Testing
… process. In order to validate this model, an experimental process has been developed to obtain the footprint shape and contact pressure distribution. The differences between the experimental and the simulation results are discussed and compared. The validated finite element model is then used …
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Experimental testing and constitutive modeling of concrete confined with shape memory alloys
… reinforced polymer (FRP) jackets. Third, an experimental study on implementing SMA spirals as internal transverse reinforcement in newly constructed square concrete columns was carried out. In this experimental program, a short square concrete column was designed, constructed with internal …
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Analysis of Lossless-Adjustable One-Ports: Experimental Testing, Modelling and Optimal Control
… are established. Finally, the results concerning experimental testing of prototype rotary varspring are presented. Experiments to establish friction characteristics in the device are carried out. The device law of ideal varspring is modified to include friction and inertia effects. The torque, …
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Experimental Testing and Numerical Modelling of Thermal Runaway in 18650 Lithium-Ion Batteries
… models using ANSYS Fluent, validated through experimental data. As the first step in such testing in South Africa, this study establishes a foundation for local LIB research. Preliminary experiments tested six LIBs from two brands (LASA and Samsung) at varying capacities, with three at 50 % …
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Behavior and large-scale experimental testing of Steel Plate Shear Walls with Coupling
… compared with the conventional SPSW system. An experimental test program was developed to explore the response of the SPSW-WC with realistic fabrication techniques. Two half-scale specimens were constructed to represent the bottom three stories of two six-story prototype structures. The degree …
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Feedback loop design and experimental testing for integrated optics with micro-mechanical tuning
… apparatus can be modified slightly to be used in testing of other integrated optoelectronic devices. The procedure for aligning lensed fibers to integrated waveguides and optimizing light throughput is described, and some test device values are presented.
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Experimental Testing of a Decentralized Model Reference Adaptive Controller for a Mobile Robot
… created by this estimation made completion of testing impossible. Future research should be performed on a robot that provides joint velocity measurement. Alternatively, a study could include state estimation as part of the controller, thus reducing and possibly eliminating the need for …
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The Experimental Testing of an Active Magnetic Bearing/Rotor System Undergoing Base Excitation
Active Magnetic Bearings (AMB) are a relatively recent innovation in bearing technology. Unlike conventional bearings, which rely on mechanical forces originating from fluid films or physical contact to support bearing loads, AMB systems utilize magnetic fields to levitate and support a shaft in an …
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Background for finite element analysis and experimental testing of glued-laminated space beams
… matrix of the beam element are obtained experimentally. Strain measurements in wood with small bonded strain gages are not accurate. A simple clip-type transducer is fabricated and used to measure the strains in the test glulam beams. The distribution of normal stresses is investigated …
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Concept development, mechanical design, manufacturing and experimental testing for a cannon-launched reconnaissance vehicle
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1998.
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A plane grillage model for structural dynamics experiments: design, theoretical analysis, and experimental testing
In order to provide a realistic and challenging experimental test for active vibration control concepts applicable to large space structures, an experimental model is required that simulates the complicated dynamic characteristics of such structures. This study presents the design, theoretical …
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Optimisation and efficiency improvement of pelton hydro turbine using computational fluid dynamics and experimental testing
… original and optimised design model runners and experimentally testing them. The numerical techniques created during part 1) included many numerical and physical assumptions to simplify the problem. This was necessary because accurate modelling of impulse turbines (Pelton in this case) that …
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