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 26 for “"Impact Behavior"”.
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The Impact Behavior of Austempered Ductile Iron at Sub-Zero Temperatures
1 PDF file (39 pages)
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The Buzz Behind Alcohol Advertising: A study of how alcohol advertisements on social media impact behavior
… attitude could be more susceptible or why their behavior could be more easily influenced by certain types of alcohol marketing messages (Petty & Cacioppo, 1986). This thesis tested three different alcohol advertising message strategies (i.e., taste, humor, and influencer appeals) to see how each …
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The role of microstructure on the combustion and impact behavior of mechanically activated nickel/aluminum reactive composites
… sensitivity. Their combustion and mechanical impact behavior is being studied to develop the understanding needed so that the materials can be ultimately developed for applications such as multi-functional energetic materials, blast enhancement and synthesis of novel metastable non-equilibrium …
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High-Velocity Microparticle Impact for Analytical Modelling of High-Strain-Rate Mechanics and Material Behavior
… and observing high-velocity micron-scale impacts against various materials is the focus of this work. This technique, the laser-induced particle impact test (LIPIT), is capable of accelerating microparticles to supersonic velocities to achieve strain-rates up to 108 s-1. The platform also …
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Improving Damage Tolerance of Composite Sandwich Structures Subjected to Low Velocity Impact Loading: Experimental and Numerical Analysis
… conventional composite facing skins exhibit low impact resistance in the transverse direction. Here, composite skin sandwich structures with three different impact resistant core materials were fabricated and tested both experimentally and numerically. Neat CFRP and 2024-T3 aluminum alloy sheets …
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Cracking Common Notions Relating Egg Strength to Impact Orientation
… its chances of resistance to fracture upon impact. This study tests this conventional wisdom by investigating the egg's strength, or energy sustained before rupture, depending on its orientation. First, static compression tests were conducted to determine the maximum energy absorbed by the …
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Investigation into the Effects of Wire Mesh on Tensile and Impact Properties of Fiber Metal Laminates
… study was conducted into the tensile and impact behavior of Fiber Metal Laminates by combining 5052 aluminum mesh or2024-T3 aluminum sheets,2.47 N (8.9 oz) or 6.67 N (24 az) ShieldStand<sup>®</sup> S fiberglass, and Hysol EA 9313 epoxy. Testing was performed under the guidelines of ASTM …
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Burnout And Job Satisfaction Of Behavior Technicians Working In Public Schools: A Quantitative Correlational Study
… of burnout predict job satisfaction of behavior technicians in public schools. There was a need to examine if the high levels of burnout and low job satisfaction experienced by teachers and paraprofessionals that have resulted in high rates of attrition also impact behavior technicians …
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Advanced composites using non-autoclave processes: manufacturing and characterization
… thickness and their interactions on the impact behavior of the composites was studied using Design of Experiments (DoE)"--Abstract, page iv.</p>
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Impact fracture of embrittled stainless steels
… martensitic stainless steel have been studied by impact testing, metallography, and SEM fractography. New data for uncharged and hydrogen-charged specimens of Types 304L and 316L austenitic stainless steels show significant hydrogen effects on the impact behavior of both materials. The Type 316L …
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Manufacturing of advanced continuous fiber reinforced composites for high temperature applications
… mats. The effects on the microstructure and the impact behavior of thermoset polyurethane composite material, exposed to an accelerated UV-aging environment, were assessed. The work performed provides valuable information with respect to the processing of continuous fiber reinforced composites …
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High-Velocity Impact of Metal Microparticles
… recent development of the laser-induced particle impact test (LIPIT) has enabled direct imaging of individual microparticles as they impact a substrate at velocities of hundreds or thousands of meters per second. This technique allows for precisely controlled high-throughput impact testing, …
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Behavior of Reinforced Concrete Panels Subject to Impact by Non-deformable Projectiles
<p>In impact resistance of reinforced concrete (RC) panels against projectiles the contribution of the orthogonal mesh reinforcement has been ignored. In this study the contribution of mesh reinforcement to impact resistance and itseffect on the nature of local damage caused by impact of …
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Computational Modeling of Droplet Impact Dynamics on Solid Substrates
… computational model is developed to simulate the impact dynamics of a droplet on solid substrates with the purpose of predicting the droplet spreading characteristics over time. Previous studies focused on finding relations between the impact parameters and outcome dynamics. A modified approach …
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A self healing smart syntactic foam based grid stiffened sandwich structure
… structural-length scale damages by low velocity impact such as tool drops, runway debris etc., sandwich structures usually have a very low residual structural capacity. Unfortunately, macro-length scale damage, in particular internal damage such as impact damage, is very difficult to repair. …
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A TALE OF TWO NEUREXINS: NRX-1 AND NLR-1 FACILITATE FUNCTION OF MONOAMINE CIRCUITS AND FORAGING BEHAVIORS
… and function of the neural circuits that control behavior. Alterations in neural circuits either from genetics or the environment can have major consequences on behavior and can be associated with conditions like autism spectrum and schizophrenia. Defining the mechanisms by which SAMs, such as …
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Material characterization of high-voltage lithium-ion battery models for crashworthiness analysis
… study of the material properties and post-impact behavior of prismatic pouch lithium-ion battery cells was conducted to refine computational finite element models and explore the mechanisms of thermal runaway caused by internal short circuit. In phase one, medium and large sized cells at …
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Neural And Psychological Bases Of Health News Sharing
… with social forces like social influence to impact behavior and attitudes which has important implications for large-scale media effects. The abundance of online data about sharing patterns has enabled detailed descriptions of these processes but commonly used methods are less well suited to …
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Reconfigurability in Wireless Networks: Applications of Machine Learning for User Localization and Intelligent Environment
… under different configurations to learn the impact behavior of the RIS on the wireless channel. Based on the context and experience from the first scenario, we built a DL neural network that maps RIS configurations to received signal estimations. In a second phase back propagation, the loss …
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Protection of High-Voltage Transformer Bushings and Other Brittle Structures Against Impact
… to improve the fundamental understanding of the impact behavior of porcelain high-voltage (HV) transformer bushings under high-velocity impact, with a focus on their protection with feasible methods which could be quickly applied in service to prevent vandalism and other undesirable impact …
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