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 30 for “"hybrid composites"”.
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Thermomechanical Response of Shape Memory Alloy Hybrid Composites
… presented for analyzing such shape memory alloy hybrid composite (SMAHC) structures exposed to thermal and mechanical loads. Also presented are (1) fabrication procedures for SMAHC specimens, (2) characterization of the constituent materials for model quantification, (3) development of the test …
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Mechanical and Electrical Characterization of Carbon Fiber/Bucky Paper/Zinc Oxide Hybrid Composites
… for multifunctional carbon fiber reinforced composites (CFRPs) expedited the use of several nano reinforcements such as zinc oxide nanorods (ZnO) and carbon nanotubes (CNTs). Zinc oxide is semi-conductor with good piezoelectric and pyroelectric properties. These properties could be …
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Study on the Mechanical Properties of Carbon Nanotube Coated‒Fiber Multi-Scale (CCFM) Hybrid Composites
L'abstract è presente nell'allegato / the abstract is in the attachment
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Wetlaid Cellulose Fiber-Thermoplastic Hybrid Composites - Effects of Lyocell and Steam Exploded Wood Fiber Blends
Fiber hybridization involves the blending of high and low performance fibers in a common matrix to yield a composite with a balance of properties that cannot be achieved by using either fiber alone. In this study, the random wetlay process was used as a compounding method to investigate the effects …
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Low velocity impact response of laminated textile coir-aramids/epoxy hybrid composites subjected to transverse penetration loading
The hybrid of natural and synthetic fibres in a composite system has gained interest in research field due to the environmental consciousness. Coir natural fibre has been found to have a high potential as impact resistance, in which brittle fibre helps to spread the impact energy over a wider area. …
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Silicone resins and their composites
… with a vacuum bagging technique. Silicone resin composites are proved to be thermally stable, moisture resistant and fire resistant. However, they have weak strength and modulus. Their temperature dependence of mechanical properties is also big and results in poor property retention at high …
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Durability and Damage Analysis of Hybrid Multiscale Composites
… the mechanical performance of fiber reinforced composites (FRPs) by modification of the fibers’ surface morphologies. The effects of various surface alterations of a plain-woven carbon fiber fabric surface, on the fiber/epoxy interface were investigated. The alterations were mostly achieved by …
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Mechanics of Hybrid Metal Matrix Composites
The appeal of hybrid composites is the ability to create materials with properties which normally do not coexist such as high specific strength, stiffness, and toughness. One possible application for hybrid composites is as backplate materials in layered armor. Fiber reinforced composites have been …
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Damage accumulation in hybrid woven fabric composites.
… conditions. One of the woven fabrics was non-hybrid glass using E-glass fibre yams in both warp and weft (fill) directions, the second fabric was a hybrid woven fabric using E-glass fibre yams in the warp direction and R-glass fibre yams in the weft direction. Destructive tests such as …
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Synthesis and mechanical characterization of aligned carbon nanotube metal- and carbon-matrix nanocomposites
… candidate to provide nano-reinforcement, both in hybrid composites and nanocomposites, and they have been found to improve the hardness, yield strength, and conductivity of their matrix material. Additional enhancement of these matrices can be realized by using aligned CNTs (A-CNTs) of increased …
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A study of the feasibility of advanced hybrid thermoplastic composites for aerospace and automotive applications
… at the feasibility of developing an advanced hybrid thermoplastic composite for aerospace and automotive applications. This was done by first researching the types and functions of current thermoplastic composites used in the aerospace and the automotive industries. Thereafter, an advanced …
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Flammability and durability of bamboo fabric reinforced polypropylene composites and their hybrids
… contribute substantially to fire resistance in composites. In this study, bamboo fabric has been used to reinforce polypropylene (PP) to produce eco-friendly composites. Hybridisation is a technique which may improve the strength and stiffness as well as the moisture resistance and flammability …
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Multi-functional SMA hybrid composite materials and their applications
… materials, control or modification of the SMA hybrid composite’s structural properties can be accomplished in-service, thereby increasing the hybrid composite’s structural functionality. Previous studies addressed increasing composite materials’ functionality by enabling in-service control of …
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Marginale Adaptation von stopfbaren Kompositen und Ormoceren in Klasse-II-Kavitäten
… demands and the discussion about amalgam, composites are used more and more to restore posterior teeth. Packable composites and ormocers are discussed as better alternatives for amalgam as stress-bearing posterior restorations when compared to traditional hybrid composites. Aim of the study …
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Testbeds for quality and porosity control in metal additive manufacturing by selective laser melting
… metrology, and the capability to fabricate novel hybrid composites through selective doping of the powder bed by inkjet deposition. An initial demonstration of this testbed relates basic scan strategies to thermal history and resultant porosity in as-built alloy 316L austenitic stainless steel. …
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Understanding the effect of nanofillers on the properties of polypropylene and glass fiber/polypropylene multiscale composites
In this study, polypropylene (PP) based nanocomposites were prepared by incorporating different kinds and amounts of silica nanoparticles and graphite nanoplatelets (GNP). The role of various percentages of compatibilizer polypropylene grafted with maleic anhydride (PPgMA) into PP nanocomposites …
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Development and Characterization of Piezoresistive Nanocomposites for Sensing Applications
<p>Carbonnanotube basedhybrid nanocomposites are known to exhibit remarkable electrical and mechanical properties with many potentials in strain and damage sensing applications. In this work, we fabricate hybrid nanocomposites with carbon nanotube (CNT) sheet and graphene nanoplatelets (GNP) as …
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Semiconductor nanocrystals for novel optical applications
… spectral response, photorefractive polymeric composites photosensitized with semiconductor nanocrystals have emerged as an important class of materials. Here, we report on the photosensitization of photorefractive polymeric composites at visible wavelengths through the inclusion of narrow …
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Hybrid Structural Composites with Energy Harvesting Capabilities
<p>Hybrid materials have received significant interest due to the potential enhancements they provide over traditional materials such as sensing, actuating, energy scavenging, thermal management, and vibration damping. While traditional materials can be utilized for either one of these functions or …
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Effect of Sustainable and Composite Materials on the Mechanical Behavior of Sandwich Panels Under Edgewise Compressive Loading
… industry has gradually shifted from metals to composites in many different applications due to the lightweight properties of composite materials. Some benefits of composites include higher strength-to-weight ratio and corrosion resistance. At this point in time, the composite industry …
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