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.
Results
Showing 1 to 20 of 78 for “"physical testing"”.
-
Physical Testing of Potential Football Helmet Design Enhancements
… test the helmet design; however, full scale testing was required. In order to carry out this testing a drop tower was built based on National Operating Committee on Standards for Athletic Equipment, NOCSAE, specification. The drop tower designed for Cal Poly is a lower cost and highly …
-
Performance and hull pressure analysis of scaled physical testing of a wave energy converter
… operational environment. This study describes a physical tank testing campaign of one such model, the Ocean Energy (OE) Buoy, a floating oscillating water column wave energy converter. The walls of the OE Buoy are open to allow water to freely flow through it, and this study seeks to determine …
-
Numerical Modeling for Increased Understanding of the Behavior and Performance of Coal Mine Stoppings
… Numerical models were used in combination with physical testing to study the failure mechanisms of concrete block stoppings. Initially, the behavior of a single standard CMU block was observed and simulated using FLAC. Full-scale stoppings were then tested in the Mine Roof Simulator and modeled …
-
Localization And Mapping Of Unknown Locations And Tunnels With Unmanned Ground Vehicles
… and to validate the architecture through field testing. Developing this platform will enhance the U. S. Army Engineering Research and Development Center’s (ERDC’s) current capabilities and create a safe and efficient autonomous vehicle to perform the following functions within tunnels: (1) …
-
Improving the strength of fused filament fabrication parts by non-planar alignment of material extrusion wih stress vectors
… validation occurs through simulation and physical testing. Physical testing confirms mechanical property improvements, including increases in peak load (up to 22.7%), yield load (up to 34.0%), and energy absorption (up to 317.3%). Moreover, failure modes transitioned from brittle …
-
A dynamic damping device for payload pendulations of construction cranes
… operational constraints, theoretical design, and physical testing. Tuned mass damping will be investigated as the basis for the damping control method. Theory will be detailed and incorporated in a mathematical simulation. The tuned mass damper, a cantilevered rod, will be designed and tested for …
-
An investigation of cement coating for aggregates in bituminous material
… main areas of study. They were, chemical and physical testing of the aggregate, and testing of a bituminous road mixture containing the modified aggregate, namely porous asphalt wearing course. Chemical testing involved a regime to show the affinity between coated and uncoated aggregates, and …
-
Development of an end-effector system for autonomous spraying applications and radiation surveying
This thesis presents the design and testing of a scale proof-of-concept prototype end-effector system for autonomous shotcrete application and radiation surveying in underground uranium mining environments. The prototype end-effector system presented consists of two functionally distinct prototype …
-
Identification of Physical Changes to a Steel Frame
The thesis utilized physical testing and computer modeling to determine the feasibility of identifying a change to the mass or stiffness of a steel frame. Physical testing was performed using an accelerometer, linear shaker, and arbitrary function generator. Two methods of laboratory testing were …
-
Finite Element Modeling and Experimental Validation for Off-Road Tire Performance
… element analysis (FEA). Through simulations and physical testing, this study analyzes how various operational and design parameters influence soil deformation and vehicle mobility. The findings are foundational for advancing off-road tire modeling and improving performance in various off-road …
-
Development of a light-weight manipulator system for an omni-directional multi-rotor platform
… presents the development of a proof-of-concept physical prototype and control system for a six degree-of-freedom manipulator attached to an omni-directional multi-rotor system known as the OmniRaptor. This prototype was developed in order to provide the OmniRaptor with the ability to precisely …
-
A study of the feasibility of advanced hybrid thermoplastic composites for aerospace and automotive applications
… which were then characterised by mechanical and physical testing.
-
Design and Analysis of the Intake System of a Formula SAE Car
… of the entire engine system, followed by physical testing of several of the components using a flowbench.
-
Processing of toughened cyanate ester matrix composites
… into composite panels for mechanical and physical testing. The cure cycle used to manufacture the composite laminates was developed with the aid of a process simulation model developed by Loos and Springer. In order to accurately simulate the resin curing and flow processes, the cure …
-
Electrothermal Analysis of Gallium Nitride Island Transistor eHEMT Devices for Fault Tolerant Design
… against models, previous simulations, and physical testing to ensure that the simulations behaved accordingly. The results of the electrothermal simulation verification showed that there was a less than 5% error between the measured and simulated values, providing an accurate simulation of …
-
Development of new protocols to evaluate the transverse loading of mine ventilation stoppings
… Regulations is 39 psf. This measure is based on physical testing of a freestanding wall in accordance with ASTM E 72 specifications, where the dominant parameter is the tensile strength of the sealant. A new protocol based on rigid arching is proposed to determine the true transverse load …
-
FINITE ELEMENT ANALYSIS OF STEEL WELDED COVERPLATE INCLUDING COMPOSITE DOUBLERS
… Models were created to properly represent physical testing being done parallel to this study. These models represented the control specimen, consisting of a welded coverplate, and several composite doubler arrangements. The first composite doubler analyzed consisted of the smooth shape …
-
An Exploratory Study of Pulse Width and Delta Sigma Modulators
… for each modulator, and two orders are used in physical testing.</p>
-
Minimal Constraint and Precision Placement in Cyclic Testing of High Life-Cycle Products
… a method and test equipment to determine the physical and electrical characteristics of these contacts over their lifetime will allow for the accelerated development of these products. This body of work serves as a design guide to establish a physical testing mechanism to assess contact …
Page 1 of 4