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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 40 for “"Fiber-Reinforcement"”.
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Manufacturing glass-fiber reinforcement for grinding wheels
… some characteristics of the reinforcing glass fiber disc added during the fabrication of these wheels are determined. The toughening mechanisms at work in a fiber glass reinforced grinding wheel are analyzed. The stresses inside a grinding wheel in use are determined. Different designs for a …
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Fiber Reinforcement Compaction In Resin Injection Pultrusion Process
… of constant cross-section. In this process, fiber reinforcements are continuously pulled through the injection chamber where liquid resin is injected to cause complete wetout of the fibers before exit. The fiber-resin combination obtained from the injection chamber is then cured to obtain the …
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Implementing Continuous Fiber Reinforcement for Concrete Additive Manufacturing
… construction, but the inability to print reinforcement as part of the manufacturing process is a significant limitation. This thesis proposes a method of extruding continuous fiber reinforcement during the 3D printing process. Reinforcement is important in the process of creating concrete …
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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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Lightweight concrete : investigations into the production of natural fiber reinforcement
… is to investigate the benefits of adding natural fiber tensile reinforcement to aerated concrete. Concrete is a great composite material which can be created in various proportions and with various materials to alter its strength, density and porosity, amongst other properties. Concrete which is …
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IMPROVEMENT OF DYNAMIC PROPERTIES AND SEISMIC RESPONSE OF CLAY USING FIBER REINFORCEMENT
… PROPERTIES AND SEISMIC RESPONSE OF CLAY USING FIBER REINFORCEMENT Behzad Amir Faryar, Doctor of Philosophy, 2012 Directed By: Professor M. Sherif Aggour, Department of Civil and Environmental Engineering In recent years, earthquakes have caused heavy damage to buildings and infrastructure. One …
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Evaluation of bonding between ultra-thin portland cement concrete overlays and asphalt cement concrete
… cement concrete (PCC) thickness, synthetic fiber reinforcement usage, and joint spacing. The interface bonding condition is the most important of these elements because it enables the pavement to act as a composite structure, thus reducing tensile stress and allowing an ultra-thin PCC …
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Fiber compaction and wetout in tapered resin injection pultrusion manufacturing
… with constant cross section. Reinforced fibers are pulled through a resin, possibly folloby a separate injection chamber preforming system, and into a heated die, where the resin undergoes complete wetout. Thus the required pultruded composite is obtained in the desired profile. The main …
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Fabrication and characterization of multifunctional composites
… structural composites reinforced with carbon fibers. Across industries, materials with high performance-to-weight ratio are sought after. Using carbon fibers as secondary phases in these proposed composites, specific characteristics can be tailored in these materials to manufacture strong, …
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Reinforced chitosan-based heart valve scaffold and utility of bone marrow-derived mesenchymal stem cells for cardiovascular tissue engineering
… study, we investigated the effectiveness of a fiber reinforcement method for enhancing the mechanical properties of chitosan scaffolds. Chitosan fibers were fabricated using a solution extrusion and neutralization method and incorporated into porous chitosan scaffolds. The effects of different …
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Study of Mechanical Properties of PVA Fiber-Reinforced Concrete With Raman Spectroscopic Analysis
… to make concrete a better construction material. Fiber reinforcement is an approach which has been shown to improve the quality and durability of concrete. The focus of this research is to develop a mix design of fiber reinforced concrete and then test these materials for both compressive and …
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Effects Of Fiber And Lithium On Mechanical Properties Of Concrete Made Fromrecycled Concrete Aggregate
… (RCA) as construction material. The use of fiber reinforcement in Portland Cement Concrete (PCC) has recently become a popular option in concrete construction because of its influence on preventing segregation, reducing early shrinkage cracks and increasing residual load capacity. …
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Processing parameters and chamber length impact on detached die and attached die resin injection pultrusion
… processing parameters considered are pull speed, fiber volume fraction, resin viscosity, injection port location and compression ratio. 3-D finite volume technique is used to simulate the liquid resin flow through the fiber reinforcement in the injection pultrusion process. The purpose of the …
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The effect of polymerization methods and fiber types on the mechanical behavior of fiber-reinforced composite resin
… to reinforce interim restorations, among which fiber reinforcement has been regarded as one of the most effective methods. However, some studies have found that the limitation of this method is the poor polymerization between the fibers and the composite resin, which can cause debonding and …
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Impact of Design Parameters on Detached-Die Tapered Resin Injection Pultrusion
… to simulate the liquid resin flow through the fiber reinforcement and to predict the liquid resin flow front. A minimum injection pressure for a complete wetout of the composite parts in both the attached-die and detached-die configuration is determined along with the associated maximum …
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Development of High-Strength Composites with Sustainable Fibers for Structural Applications
… of low-value biomass, specifically aspen fiber, in fused filament fabrication (FFF) to develop biocomposites. Various chemical treatments (NaOH, silane, and maleic anhydride (MA)) were applied to improve fiber compatibility with polylactic acid (PLA). Both untreated and treated fibers at …
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Superelastic shape memory alloy composite bars for reinforcing concrete structures
… to FRP reinforcing bars through the use of SMA-fiber reinforced polymer (SMA-FRP) composites, an innovative type of composite that consists of a polymer matrix reinforced with small diameter superelastic SMA wires with and without additional conventional fiber reinforcement. In this study an …
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Multiscale Computational Framework for Analysis and Design of Ultra-High Performance Concrete Structural Components and Systems
… law to account for the addition of discrete fibers. The approach is robust, general, and could be utilized by other researchers to expand the computational capability and simulate the behavior of different composite materials. The work described herein identifies the model material parameters …
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Flexural behavior of a glass fiber reinforced wood fiber composite
… static and dynamic flexural properties of a wood fiber matrix internally reinforced with continuous glass fibers were investigated. When modelled as a sandwich composite, the static flexural modulus of elasticity (MOE) of glass fiber reinforced hardboard could be successfully predicted from the …
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