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Dissertations / Theses on the topic 'Thermoplastic composite armors reinforced'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

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1

Wu, Xiang. "Thermoforming continuous fiber reinforced thermoplastic composites." Diss., Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/9383.

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2

Ekström, Lars Johan. "Welding of bistable fibre-reinforced thermoplastic composite pipelines." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614933.

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3

Howes, Jeremy C. "Interfacial strength development in thermoplastic resins and fiber-reinforced thermoplastic composites." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/77899.

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The objective of this study was to develop tests that could be used to characterize autohesive strength development in amorphous thermoplastic resins and fiber-reinforced thermoplastic prepregs. All tests were performed using polysulfone P1700 thermoplastic resin and AS4/P1700 graphite-polysulfone prepreg. Two test methods were examined to measure autohesion in neat resin samples. These included an interfacial tension test based on the ASTM tensile adhesion test (ASTM D897) and a fracture toughness test using a compact tension (CT) specimen (based on the ASTM toughness test for metals ASTM E

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4

Leach, David W. "An experimental study of the processing parameters in thermoplastic filament winding." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/16030.

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5

Claassen, Marius. "A reconfigurable manufacturing system for thermoplastic fibre-reinforced composite parts : a feasibility assessment." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97045.

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Thesis (MEng)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: The South African manufacturing industry plays a pivotal role in the growth of its local economy. Modern manufacturing requirements include the ability to respond quickly to product variability, fluctuations in product demand and new process technologies. The reconfigurable manufacturing paradigm has been proposed to meet the demands of the new manufacturing requirements. In order to assess the feasibility of incorporating automated, reconfigurable manufacturing technologies into the production process of thermoplastic fibre-re

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6

Brunnacker, Lena. "Short Carbon Fiber-Reinforced Thermoplastic Composites for Jet Engine Components." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76733.

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State-of-the-art aircraft engine manufactures aim to reduce theirenvironmental impact steadily. Thereby they attempt to increase engineefficiency, use new renewable fuel sources and most importantly aim toreduce component weight. While Titanium, Aluminum and continuousfiber reinforced thermosetting composites and superalloys prevail in thecurrent material selection, the present work desires to raise awareness fora novel group of materials; short carbon fiber reinforced thermoplasticcomposites (SCFRTPs). In this kind of composite short fibers givedimensional stability and strength while the the

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7

LUPONE, FEDERICO. "Additive manufacturing of carbon fiber reinforced thermoplastic polymer composites." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2966347.

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8

Gray, Robert Williamson IV. "The Effects of Processing Conditions on Thermoplastic Prototypes Reinforced with Thermotropic Liquid Crystalline Polymers." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/46512.

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This work is concerned with preliminary studies on developing thermoplastic composite materials suitable for use in fused deposition modeling (FDM). Polypropylene (PP) strands reinforced with continuous thermotropic liquid crystalline polymer (TLCP) fibrils were generated in a novel dual extruder process. Strands were then re-extruded to form short fiber composite monofilaments that were used as feed stock in the FDM 1600 rapid prototyping system. Prototypes containing 40 wt% Vectra A were shown to have tensile properties twice those of parts built using acrylonitrile bu

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9

Beguinel, Johanna. "Interfacial adhesion in continuous fiber reinforced thermoplastic composites : from micro-scale to macro-scale." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI051.

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L’intérêt croissant de l’industrie pour les matériaux composites thermoplastiques est motivé par leurs propriétés de thermoformabilité, de recyclabilité ainsi que leurs capacités de cadences de production élevées. Le développement de matériaux pré-imprégnés thermoplastiques, apparus dès les années 1980, s’est imposé comme un moyen efficace de contourner les fortes viscosités des polymères utilisés en réduisant la distance d’écoulement des polymères à l’état « fondu ». Cette étude s’est plus particulièrement intéressée au développement de composites à base de tissus de verre et de carbone pré-i

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10

Siengchin, Suchart. "Natural Fiber Reinforced Thermoplastics." Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-222094.

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Biocomposites made from biodegradable polymer as matrix and natural fiber as reinforcement are certainly environmentally friendly materials. Both constituent materials are fully biodegradable and do not leave any noxious components on Earth. The natural fibers have been used as reinforcement due to their advantages compared to glass fibers such as low cost, high specific strength and modulus, low density, renewability and biodegradability. Major aims of this work were to produce natural fibers and/or nanoparticles with polyethylene (PE), polypropylene (PP) and polylactide (PLA), poly(hydroxybu

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11

Louwsma, Jeroen. "Synthesis and investigation of oligomers based on phenylalanine as interfacial agents in fibre-reinforced thermoplastic composite materials." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAF047.

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Le développement d’agents interfaciaux pour des matériaux composites renforcés de fibres est nécessaire afin d’obtenir des matériaux performants notamment pour l’industrie automobile. Le projet se concentre sur la synthèse d’oligomères à séquences contrôlées préparés par synthèse en phase solide par réaction d’amidification et de cycloaddition assistée par le cuivre entre un azoture et un alcyne pour introduire précisément des unités de phénylalanine et des groupes aliphatiques. Ces oligomères ont été testés comme agents interfaciaux pour des matériaux composites à base de polypropylène renfor

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12

Van, der Westhuizen Artho Otto. "Impact response of a continuous fibre reinforced thermoplastic from a soft bodied projectile." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80095.

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Thesis (MScEng)--Stellenbosch University, 2013.<br>AFRIKAANSE OPSOMMING: Saamgestelde materiale het baie gewilde materiale in die lugvaart- en motor industrië geword as gevolg van die gewigsbesparende voordele wat dit inhou. Kostes en ander verwerkingsprobleme het tradisioneel die wydverspreide gebruik van spesifiek termoplasties-versterkte vesels in hierdie areas verhinder. Baie van die vervaardigingsprobleme (spesifiek lang siklusse) is aangespreek met die aanvang van termoplastiese matriks materiaal soos Polyphenolien Sulfied (PPS). Hierdie materiaal voldoen ook aan die lugvaart-indus

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13

Siengchin, Suchart. "Natural Fiber Reinforced Thermoplastics." Doctoral thesis, Universitätsverlag der Technischen Universität Chemnitz, 2015. https://monarch.qucosa.de/id/qucosa%3A20671.

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Biocomposites made from biodegradable polymer as matrix and natural fiber as reinforcement are certainly environmentally friendly materials. Both constituent materials are fully biodegradable and do not leave any noxious components on Earth. The natural fibers have been used as reinforcement due to their advantages compared to glass fibers such as low cost, high specific strength and modulus, low density, renewability and biodegradability. Major aims of this work were to produce natural fibers and/or nanoparticles with polyethylene (PE), polypropylene (PP) and polylactide (PLA), poly(hydroxybu

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14

Eftekhari, Mohammadreza. "Creep, Fatigue, and Their Interaction at Elevated Temperatures in Thermoplastic Composites." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470388940.

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15

Maron, Bernhard. "Beitrag zur Modellierung und Simulation des Thermoformprozesses von textilverstärkten Thermoplastverbunden." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-207535.

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Der komplexe Verarbeitungsprozess endlosfaserverstärkter Textilthermoplaste beeinflusst maßgeblich die resultierende textile Struktur und damit im gleichen Maße die strukturellen Eigenschaften des Verbundes. Zur vollständigen Ausschöpfung des vielversprechenden Potentials dieser innovativen Werkstoffgruppe ist es daher notwendig, die Fertigungssimulation in den Entwicklungsprozess zu integrieren. In der vorliegenden Arbeit wird eine qualitative als auch quantitative Beschreibung der komplexen Deformationsphänomenologie von Textilthermoplasten beim Thermoformen vorgenommen, wobei die eingehende

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16

Fabre, Victor. "Étude de l'endommagement en fatigue d'un composite thermoplastique à fibres courtes : cas du polyamide 6,6 renforcé de fibres de verre courtes." Thesis, Paris, ENMP, 2015. http://www.theses.fr/2015ENMP0012.

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Le travail abordé dans le cadre de cette thèse constitue une contribution à la compréhension des mécanismes d'endommagement et à l'identification d'un critère de durée de vie du polyamide 6,6 renforcé à 30% en masse de fibres de verre courtes (PA66GF30), obtenu par moulage par injection, en prenant en compte les effets de la température, de la teneur en eau et des orientations de fibres induites par le procédé de fabrication. Ainsi, dans un premier temps, une campagne d'essais de caractérisation du comportement mécanique du PA66GF30, pour différentes orientations de fibres, températures, teneu

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17

Klemt, Christian. "Verfahrensentwicklung zur Einbringung endlosfaserverstärkter Thermoplaste in metallische Strukturen mittels Patchen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-218647.

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Im Automobilbau kommt zunehmend das sog. Multimaterial-Design zum Einsatz, um kostenattraktiven Leichtbau in Großserienanwendungen umzusetzen und das Leichtbaupotential von strukturellen Bauteilen in bislang meist monolithischer Bauweise zu erweitern. Die Patch-technologie, bei der die Strukturertüchtigung durch die lokale und anforderungsgerechte Einbringung von endlosfaserverstärkten Faser-Kunststoff-Verbunden (FKV) in dünnwandige metallische Bauteile erfolgt, ist eine zielführende Technologie, um einen hohen Leichtbaugrad zu generieren. Eine besondere Herausforderung stellt dabei die dauerh

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18

Denis, Yvan. "Modélisation en grandes déformations du comportement hystérétique des renforts de composites : Application à l'estampage incrémental." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI098.

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Les matériaux composites connaissent une croissance exponentielle d'utilisation que ce soit dans le domaine de l'aérospatial, l'aéronautique, l'automobile ou encore le sport. Cette évolution significative s'explique notamment par les excellentes propriétés mécaniques que propose ce genre de matériaux. De plus, le ratio caractéristiques/poids est extrêmement favorable à ces derniers puisqu'ils restent plus légers que les matériaux usuellement employés par le passé. Cependant, ils sont aussi extrêmement coûteux et moyennement maîtrisés comparés aux connaissances scientifiques qui existent pour l

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19

Lu, Fang. "Caractérisation et modélisation du comportement cyclique en fatigue uniaxiale/multiaxiale des composites à fibres courtes : Thermoplastiques (PA66) renforcés de fibres de verre." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEM072.

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Dans l'objectif d'améliorer la compréhension du comportement mécanique des thermoplastiques renforcés de fibres courtes (SRFP), notre étude s'est focalisée sur la caractérisation et la modélisation du comportement cyclique en fatigue du polyamide 6,6 renforcé de fibres de verre courtes à 30% en masse (PA66GF30). D'un point de vue expérimentale, des essais de fatigue en traction uniaxiale/biaxiale et en flexion 3 points ont été réalisés, dans l'objectif d'étendre le critère de durée de vie en fatigue basé sur l'énergie de déformation restituée et validé en traction uniaxiale. L'analyse mécaniqu

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20

Sidlipura, Ravi Kumar Sujith Kumar. "Multi-modal and multiscale image analysis work flows for characterizing through-thickness impregnation of fiber reinforced composites manufactured by simplified CRTM process." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Lille Douai, 2024. http://www.theses.fr/2024MTLD0010.

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Cette thèse présente une étude expérimentale pour améliorer le moulage par compression et transfert de résine thermoplastique (CRTM), axée sur l'efficacité industrielle, la durabilité et la recyclabilité, conformément aux objectifs de développement durable pour l’industrie, l’innovation et l’action climatique. En abordant la complexité de l'écoulement de la résine à plusieurs échelles dans le CRTM, cette recherche étudie l'écoulement transversal (à travers l’épaisseur) et la porosité induite par le processus à l'échelle méso des faisceaux de fibres de verre afin d'améliorer l'uniformité de l'i

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21

Bandaru, Aswani Kumar. "Impact studies on thermoplastic composite armors reinforced with 2D/3D fabrics." Thesis, 2017. http://localhost:8080/xmlui/handle/12345678/7265.

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22

Lozano, Karen. "Development and characterization of a nanofiber-reinforced thermoplastic composite." Thesis, 1999. http://hdl.handle.net/1911/19406.

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Polypropylene composites with vapor-grown carbon nanofibers (VGCF's) as reinforcement were prepared. The fibers used have an rage diameter of 200 nm with interesting thermal, electrical and mechanical properties which make them very promising for engineering applications. Fiber purification and activation of functional groups were conducted, where amorphous carbon particles were successfully removed, achieving, high purity fibers. Sample preparation was performed using conventional plastic processing technologies. Interactions between the fibers and the matrix were analyzed by physical, mechan

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23

Liang, Jiaai. "Investigation of Failure Behaviour of a Glass-Fibre Reinforced Thermoplastic Composite." Master's thesis, 2017. http://hdl.handle.net/1885/143658.

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This work focuses on the fibre dominated failure of the woven thermoplastic fibre-reinforced composite. The novel experimental methodology induced failures in different deformation modes for the Glass Fibre Reinforced Polypropylene (GFRP) composite studied. Hence the path dependency effect on the failure of this material system can be studied experimentally through the three-dimensional (3D) Digital Image Correlation (DIC) system. A novel failure metric based on the strains experienced by the fibre bundles is developed. From the experimental results, thi

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24

劉家宏. "The Property Evaluations of Woven Fabric Reinforced Thermoplastic Composite Laminated Sheet." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/gg29wb.

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碩士<br>逢甲大學<br>纖維與複合材料學系<br>103<br>In this study, woven fabrics are made with different warp/weft combinations in order to form carbon fibers/carbon fibers (CC),glass fibers/carbon fibers (GC),carbon fibers/basalt fibers (CB),and glass fibers/basalt fibers (GB) woven fabrics. The woven fabrics are then enclosed with two layers of PET laminates. Next,they undergo the hot press molding to form CC, GC, CB, and GB composites with a thickness of 1mm, 1.25mm, 1.5mm, 1.75mm, and 2mm. The control group is CC laminated with two epoxy laminates. Five laminated composite types are compared with their comp

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25

Ferreira, Isaac Alves. "Fibre-Reinforced Thermoplastic Composite Parts Produced by Additive Manufacturing: A Comprehensive Characterization Study." Doctoral thesis, 2020. https://hdl.handle.net/10216/126714.

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26

(9012281), Pasita Pibulchinda. "The Effects of Fiber Orientation State of Extrusion Deposition Additive Manufactured Fiber-Filled Thermoplastic Polymers." Thesis, 2020.

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<p>Extrusion Deposition Additive Manufacturing (EDAM) is a process in which fiber-filled thermoplastic polymers are mixed and melted in an extruder and deposited onto a build plate in a layer-by-layer basis. Anisotropy caused by flow-induced orientation of discontinuous fibers along with the non-isothermal cooling process gives rise to internal stresses in printed parts which results in part deformation. The deformation and residual stresses can be abated by modifying the fiber orientation in the extrudate to best suit the print geometry. To that end, the focus of this research is on understan

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27

Maron, Bernhard. "Beitrag zur Modellierung und Simulation des Thermoformprozesses von textilverstärkten Thermoplastverbunden." Doctoral thesis, 2015. https://tud.qucosa.de/id/qucosa%3A29680.

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Der komplexe Verarbeitungsprozess endlosfaserverstärkter Textilthermoplaste beeinflusst maßgeblich die resultierende textile Struktur und damit im gleichen Maße die strukturellen Eigenschaften des Verbundes. Zur vollständigen Ausschöpfung des vielversprechenden Potentials dieser innovativen Werkstoffgruppe ist es daher notwendig, die Fertigungssimulation in den Entwicklungsprozess zu integrieren. In der vorliegenden Arbeit wird eine qualitative als auch quantitative Beschreibung der komplexen Deformationsphänomenologie von Textilthermoplasten beim Thermoformen vorgenommen, wobei die eingehende

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28

Klemt, Christian. "Verfahrensentwicklung zur Einbringung endlosfaserverstärkter Thermoplaste in metallische Strukturen mittels Patchen." Doctoral thesis, 2016. https://tud.qucosa.de/id/qucosa%3A30149.

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Im Automobilbau kommt zunehmend das sog. Multimaterial-Design zum Einsatz, um kostenattraktiven Leichtbau in Großserienanwendungen umzusetzen und das Leichtbaupotential von strukturellen Bauteilen in bislang meist monolithischer Bauweise zu erweitern. Die Patch-technologie, bei der die Strukturertüchtigung durch die lokale und anforderungsgerechte Einbringung von endlosfaserverstärkten Faser-Kunststoff-Verbunden (FKV) in dünnwandige metallische Bauteile erfolgt, ist eine zielführende Technologie, um einen hohen Leichtbaugrad zu generieren. Eine besondere Herausforderung stellt dabei die dauerh

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