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 289 for “"Mechanical Performance"”.
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NOVEL FERROMAGNETIC MATERIALS WITH IMPROVED MECHANICAL PERFORMANCE
… lack of prior art that experimentally measured mechanical properties drives the need for significant investment in many of these novel magnetic materials in order to even understand, let alone correct, poor ductility.</p> <p>This dissertation includes work that explored the effect of vanadium …
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Enhancing Mechanical Performance of Brittle Materials through Fiber Reinforcement
L'abstract è presente nell'allegato / the abstract is in the attachment
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Rice straw fiber polymer composites: thermal and mechanical performance
… of rice straw had no significant influence on mechanical properties of composites. The PE-g-MA/EPR ratio affected mechanical properties of composites modified by combined compatibilizers. The optimum PE-g-MA/EPR ratio was considered to be 2:1 and 1:1 for PE-g-MA/uEPR and PE-g-MA/EPR-g-MA …
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The Fracture Behavior and Mechanical Performance of Biodegradable Cornstarch Plastic Composites
The principle of filler addition as a means of preventing crack initiation and propagation was demonstrated by the addition of cellulose and soy protein isolate (SPI) to a common cornstarch matrix. The effects of cellulose and SPI fillers as anti-crack agents in high-amylose starch plastics were …
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Mechanical Performance of Industrial Hemp Fibre Reinforced Polylactide and Unsaturated Polyester Composites
… and fibre/matrix interfacial strength on the mechanical properties of industrial hemp fibre reinforced polylactide (PLA) and unsaturated polyester (UPE) composites. Surface treatment of hemp fibres was investigated as a means of improving the fibre/matrix interfacial strength and mechanical …
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Computational Design of the Electrical and Mechanical Performance of Steerable MEMS Antennas
… that can be beam-steered by a micro-electromechanical system (MEMS). The steerable MEMS antenna of this work was comprised of a planar antenna on top of a Silicon membrane. The membrane is etched to create a gimbal hinge structure and a platform which supported the antenna and gave it one or …
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The Influence of Extended Cure on Mechanical Performance of Aerospace-Grade Film Adhesives
… it is important to characterize the thermal and mechanical properties of the adhesive after exposure to various manufacturing conditions. Prior studies suggest that thermal characteristics and mechanical performance of epoxy resin formulations may be considered a function of chemical structure, …
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Hierarchical Assembly Strategy and Multiscale Structural Origin of Exceptional Mechanical Performance In Nacre
… multiscale architecture and exceptional mechanical properties. Previous work has shown that the highly-ordered brick-mortar-like structure in nacre is assembled via epitaxial growth and the aragonite platelets are pure single-crystals. Our results challenge this conclusion and propose …
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Effects of Coarse Aggregate Morphological Characteristics on Mechanical Performance of Stone Matrix Asphalt
… of various mineral compositions on the mechanical performances of stone matrix asphalt (SMA) mixtures constituted; (3) investigate the relationship between the uncompacted void content of coarse aggregates and morphological characteristics. To achieve the first research objective, a …
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Powder bed fusion of Ni-based superalloys: process optimization, heat treatments and mechanical performance
L'abstract è presente nell'allegato / the abstract is in the attachment
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Nanoengineered hierarchical advanced composites with nanofiber interlaminar reinforcement for enhanced laminate-level mechanical performance
… there is a need for novel, scalable, and high-performance structural materials that offer unprecedented combinations of stiffness, strength, and toughness at a low density, which can serve in a variety of applications in the aerospace, transportation, defense, and energy industries. To date, …
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Predicting mechanical performance of adhesively bonded joints based on acousto-ultrasonic evaluation and geometric weighting
Prediction of the performance of adhesively bonded joints is essential to the acceptance of this mode of fastening. In ideal situations where the bonding is uniform throughout the joint the stress distribution depends on the material properties and the joint geometry. Knowledge of the bond …
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Data-driven design of MXene aerogels with programmable mechanical performance via active learning and collaborative robots
… a specific pressure range and possesses superior mechanical stability. Ti3C2Tx MXene-based aerogels with high electrical conductivities have been demonstrated as promising piezoresistive materials for the fabrication of intelligent pressure sensors for diverse sensing applications, from ultra-low …
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Thermoplastic Sizings: Effects on Processing, Mechanical Performance, and Interphase Formation in Pultruded Carbon Fiber/Vinyl-Ester Composites
… with the matrix, have been shown to affect the mechanical performance of the composite. These sizings affect the processability of the carbon fiber that translates into a composite with less fiber breakage and improved fiber/matrix adhesion. In addition, the interdiffusion of the sizing and the …
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Thermal and thermo-mechanical performance of voided lead-free solder thermal interface materials for chip-scale packaged power device
The need to maximise thermal performance of electronic devices coupled with the continuing trends on miniaturization of electronic packages require innovative package designs for power devices and modules such as Electronic Control Unit (ECU). Chip scale packaging (CSP) technology offer promising …
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Influence of higher time harmonics on the electrical and mechanical performance of an inverter-fed squirrel cage induction motor
… higher time harmonics affect the electrical and mechanical performance significantly, and adverse effects are investigated. Literature on the effect of higher time harmonics is reviewed. Recommendations referring to various aspects under non-sinusoidal excitation are made when installing …
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Assessing thermo-mechanical performance of ThO₂ and SiC clad light water reactor fuel rods with a modular simulation tool
This work has focused on evaluating the thermo-mechanical performance of two innovative nuclear fuel designs: the ThO2-based resource-renewable boiling water reactor (RBWR) and silicon carbide (SiC) cladding in pressurized water reactors (PWRs). Since these designs employ non-traditional fuel rod …
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Mechanical performance of optical fibre cable: A theoretical and practical analysis to establish advanced design rules for optical fibre cables.
… which influence optical fibre cable life. Four mechanical properties have been investigated, two general, crush and temperature, and two specifically associated with aerial cables, namely electrical degradation and shotgun damage. In addition to these mechanical life limiting properties, the …
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The Influence of Manufacturing Method and Collagen on the Mechanical Performance of Sodium Alginate-Based Scaffolds for Cartilage Tissue Engineering
… for their favourable properties, however, the mechanical performance of engineered tissue requires improvement. In the present work, the mechanical properties of pure-SA scaffolds were compared with various crosslinking and manufacturing protocols. The results showed that increased amounts of …
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