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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 17 of 17 for “"polymer matrix composite"”.
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Relating polymer matrix composite delamination behavior to constituent properties
Developing predictive capabilities of composite material behavior from constituent properties is an important component of accelerating materials insertion. Many models exist that accomplish this objective for a range of material properties, but no such method is available for delamination …
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Material Characterization and Life Prediction of a Carbon Fiber/Thermoplastic Matrix Composite for Use in Non-Bonded Flexible Risers
… are being studied. In the present case, a Polymer Matrix Composite (PMC) is being considered as a replacement for carbon steel in flexible risers manufactured by Wellstream Inc., Panama City, Florida. The Materials Response Group (MRG) at Virginia Tech had the primary responsibility to …
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Phase field modeling of the defect evolution and failure
… and the yield criteria and failure mechanisms in polymer matrix composite are the two major topics in this work.</p> <p>In the first part of the work, a phase field dislocation dynamics (PFDD) approach is introduced, which tracks the evolution of the dislocations in ultrafine and nano grained …
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ANALYZING THE INTERFACIAL PROPERTIES OF NATURAL FIBER COMPOSITES
… urgent demand for sustainable development, the composite materials industry is increasingly challenged to balance high performance with environmental responsibility. Conventional composites, typically composed of synthetic fibers and petroleum-based resins, offer outstanding mechanical …
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Development of filled polymers for the replacement of ceramics used as ballistic protection layer
… high costs. On the other hand, moulding using a polymer matrix composite provides an alternative process for developing lower cost parts whilst accommodating increased complexity of geometry and size. However, the mechanical behaviour of such a material is not completely known and depends on …
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Magnetostrictive Particle Tagging of Epoxy and Epoxy Composites for Self Assessment of Damage
… tags to detect damage in a structural composite. The brittle nature of the failure process of polymer matrix composite poses a technical challenge for their introduction in structural applications. Thus, there is a critical need to develop new techniques to monitor the health of …
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Development of Drape Simulation Software and the Optimisation of Variable-Length Textiles
… group of manufacturing methods known as Liquid Composite Moulding (LCM) is becoming the industry standard for Polymer Matrix Composite (PMC) production. These processes are versatile and cost-effective, but they are extremely dependant on the availability of textile preforms offering good …
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Investigation of Processing Conditions and Viscoelastic Properties on Frictional Sliding Behavior of Unidirectional Carbon Fiber Epoxy Prepreg
The quality of continuous fiber reinforced polymer matrix composite parts and structures depends strongly on the friction during the composite forming process. The two major types of friction that cause deformations during this process are ply-ply friction and tool-ply friction. One of the …
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Crack Growth Mechanisms under Anti-Plane Shear in Composite Laminates
… the mechanisms associated with crack growth in polymer matrix composite laminates subjected to anti-plane shear (mode III) loading. For mode III split-beam test methods were proposed, and initial evaluations were conducted. A single test method was selected for further evaluation. Using this …
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Development of Vacuum Assisted Composites Manufacturing Technology for Wind Turbine Blade Manufacture
… develop products which incorporate an internal composite structure in a single process (Siemens 2008). This thesis explores the technique of resin infusion and develops a manufacturing process to allow a small wind turbine blade to be manufactured in a single process complete with its internal …
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Micromechanics-Based Strength and Lifetime Prediction of Polymer Composites
With the increasing use of composite materials for diverse applications ranging from civil infrastructure to offshore oil exploration, the durability of these materials is an important issue. Practical and accurate models for lifetime will enable engineers to push the boundaries of design and make …
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Experimental and numerical investigation of steady-state and transient ultrasound directed self-assembly of spherical particles in a viscous medium
… ultrasound DSA in combination with vat photopolymerization (VP). We show that the steady-state local particle packing density increases with increasing particle volume fraction and increases with decreasing particle size. We also show that the transient local particle packing density …
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The Effect of Atmospheric Aging on a Hybrid Polymer Matrix Composites' Material Properties
… of the load bearing unidirectional hybrid composite (based upon glass and carbon fibers reinforcing a high temperature epoxy matrix) of a next generation transmission line design were investigated in this research. In particular, the flexural performance (in both static and fatigue loading) …
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Examination of Mechanical Stretching to Increase Alignment in Carbon Nanotube Composites
… for their potential as reinforcement in polymer matrix composite (PMC) materials. The potential of these nanotube-based PMC materials have been reported by researchers at Florida State University (FSU). Through the use of mechanical stretching procedures to increase the alignment of the …
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Additive Manufacturing of Polypropylene Composites with Enhanced Mechanical and Electrical Properties
L'abstract è presente nell'allegato / the abstract is in the attachment
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Finite element-based failure analysis of composite laminates with non-destructive feature quantification.
Carbon fiber reinforced polymers (CFRP) have become a mainstream material in the manufacturing process of industries from almost every sector - automotive, aerospace, energy, medical, sports and entertainment. While they are often preferred because of their superior material properties over …