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Showing 1 to 20 of 89 for “"fiber reinforced composites"”.
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Plastic Limit Strength of Unidirectional Fiber-Reinforced Composites
Made available in DSpace on 2014-12-12T00:25:55Z (GMT). No. of bitstreams: 1 7412096.pdf: 3964294 bytes, checksum: c5f33e8b13e6b61aa900c2bea126faf6 (MD5) Previous issue date: 1973
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Development of self-healing techniques for fiber reinforced composites
During the last decades, fiber reinforced composites (FRPs) are year by year replacing metals due to their high stiffness and high strength in combination with low specific weight and corrosion resistance. However, during their service life, these composites due to their laminated structure (no …
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Natural Kenaf Fiber Reinforced Composites as Engineered Structural Materials
… to provide a comprehensive evaluation of natural fiber reinforced polymer (NFRP)'s ability to act as a structural material.;As a chemical treatment, aligned kenaf fibers were treated with sodium hydroxide (alkalization) in different concentrations and durations and then manufactured into kenaf …
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Solvent-based self-healing approaches for fiber-reinforced composites
… over the the past decade, self-repair in fiber-reinforced composite materials presents significant technical challenges due to stringent manufacturing and performance requirements. For high performance, fiber-reinforced composites, the self-healing components need to survive high …
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Manufacturability and Analysis of Topologically Optimized Continuous Fiber Reinforced Composites
… are unlocking the potential of Continuous Fiber Reinforced Composites for producing components with greater strength-to-weight ratios than state of the art metal alloys and unidirectional composites. The key is the emerging technology of topology optimization and advances in additive …
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Modeling and experimental investigations of drilling carbon fiber reinforced composites
The application of composites in different industries especially aerospace industry has significantly increased due to their phenomenal mechanical characteristics. Drilling woven composite parts is one of the most common operations in assembly, and therefore selecting the ideal process parameters …
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Self-healing of impact damage in vascular fiber-reinforced composites
Vascular fiber-reinforced composites mimic biological systems to allow pluripotent multifunctional behavior in synthetic engineering materials. In this dissertation, methods are explored for recovering mechanical performance of a composite material after an out-of-plane impact event using vascular …
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Structure-property relationships in flow formed discontinuous fiber reinforced composites
… for materials containing discontinuous curverd fibers. It is demonstrated that the definition of fiber configuration and configuration averaging allow us to obtain better match with experimental results when compared to theory relying on the assumption of straight fibers. The experimental …
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Surface characterization and adhesive bonding of carbon fiber-reinforced composites
… adhesive bonding and bond durability of carbon fiber/epoxy and carbon fiber/bismaleimide matrix composites was studied. Methyl ethyl ketone (MEK) wipe, peel ply, grit blast and gas plasma treatments were the pretreatments of interest. Chemical and physical changes which occurred in the cured …
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Optimal Design of Variable-Stiffness Fiber-Reinforced Composites Using Cellular Automata
… the traditional design of composite laminates, fiber orientation angles are constant for each layer and are usually limited to 0, 90, and ±45 degrees. To fully benefit from the directional properties of composite laminates, such limitations have to be removed. The concept of variable-stiffness …
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Manufacturing of advanced continuous fiber reinforced composites for high temperature applications
"New resin systems have enabled composites to be considered as attractive alternatives in structural applications that require material to be stronger, lighter and/or more resilient to environmental effects. The current work is on the development of processes to produce continuous fiber reinforced …
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Life prediction of fiber-reinforced composites: macro- and micro-mechanical modeling
… the latter evaluates failure processes at the fiber-matrix level. In the first part of this study the remaining strength life prediction methodology MRLife, modified for ceramic composites (CCLife), is integrated into the finite element package CSTEM. to create an integrated design tool for …
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Active Rigidization of Carbon Fiber Reinforced Composites via Internal Resistive Heating
… and curing of thermoset-coated carbon fiber tows. The ability to dictate this physical transformation through temperature-controlled resistive heating highlights the responsive nature of thermoset polymer composites and demonstrates the advantages of active rigidization. Feedback …
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Autonomic healing of low-velocity impact damage in woven fiber-reinforced composites
Polymer-matrix fiber-reinforced composites have seen increasing use in applications requiring high specific strength and stiffness. These materials typically show excellent in-plane properties but are particularly susceptible to transverse impacts. Impact can significantly reduce strength and the …
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New in-plane and interlaminar shear test methods for fiber reinforced composites
A new compact double-notched specimen for in-plane shear testing of isotropic, anisotropic and composite materials was developed. A preliminary test of the specimen was performed on a cross-ply laminate. High sensitivity moire interferometry was used to determine the shear and normal strains on the …
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Finite element micromechanics modeling of inelastic deformation of unidirectionally fiber-reinforced composites
… Periodic Models: Applications to Boron/Aluminum Composites): A simple and unified weak formulation and its convenient FE implementation have been proposed. The weak formulation is valid for any doubly periodic model under uniform 3-D macro-stress, and serves as a common rational foundation of …
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Micromechanical Behavior of Fiber-Reinforced Composites using Finite Element Simulation and Deep Learning
… behavior of high-performance carbon fiber-reinforced polymer (CFRP) composites through high-fidelity numerical simulations. We investigated multiple transverse cracking of cross-ply CFRP laminates on the microstructure level through simulating large numerical models. Such an …
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