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Dissertations / Theses on the topic 'Laminated plastics'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Ramakrishnan, Karthik Ram Engineering &amp Information Technology Australian Defence Force Academy UNSW. "Low Velocity Impact Behaviour of Unreinforced Bi-layer Plastic Laminates." Awarded by:University of New South Wales - Australian Defence Force Academy. Engineering & Information Technology, 2009. http://handle.unsw.edu.au/1959.4/43918.

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Low velocity impact behaviour of bi-layered laminates of acrylic and polycarbonate was investigated using a combination of drop tower impact experiments and explicit finite element analysis in LS-DYNA. Material characterisation tests were conducted in tension and in compression to obtain material properties for input to the material model in the numerical analysis. Quasistatic plate bending tests were conducted at different loading rates to compare the quasistatic response of the materials to the impact behaviour. Impact tests on circular plates of monolithic acrylic and polycarbonate were car

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2

Thielman, Scott C. "Design and optimization of a material property distribution in a laminated composite flywheel /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/7031.

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3

Daniewicz, David Joseph 1965. "Edge delamination in advanced laminated composites, theory and verification." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/277294.

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A damage evolution theory capable of predicting the effects of edge delamination phenomena on composite laminate response is developed. The theory is a mechanics-based formulation which quantifies the damage development of a laminate under general loading, and incorporates it directly to the constitutive behavior of the laminate. The theoretical development introduces a laminate-specific constant φ; the methodology of φ selection is presented for [±15/±50]s, [±45/0/90]s, and [0₂/90₂]s T300 graphite/epoxy laminates. Edge effects are demonstrated by comparing the damage state of the above lamina

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4

Nayfeh, Jamal Faris. "Nonlinear dynamics of composite plates and other physical systems." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-07282008-135756/.

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5

Richie, Matthew. "Fatigue Behavior of FRP-Reinforced Douglas-Fir Glued Laminated Bridge Girders." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/RichieMC2003.pdf.

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6

Xu, Han. "Development of FRP-Glulam Panel for Bridge Deck Replacement." Fogler Library, University of Maine, 2001. http://www.library.umaine.edu/theses/pdf/XuH2001.pdf.

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7

Kalluri, Ravi Shankar. "Failure of transparent polymer composite laminated glass panels under impact loading." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4902.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on March 27, 2008) Includes bibliographical references.

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8

Botting, Joshua Keith. "Development of an FRP Reinforced Hardwood Glulam Guardrail." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/BottingJK2003.pdf.

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9

Joyce, Peter James. "Experimental investigation of defect criticality in FRP laminate composites /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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10

Gamache, Christopher P. "Preliminary Investigation on the Durability of FRP Reinforced Glulam Bridge Girders." Fogler Library, University of Maine, 2001. http://www.library.umaine.edu/theses/pdf/GamacheCP2001.pdf.

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11

Lindyberg, Robert F. "ReLAM: a nonlinear probabilistic model for the analysis of reinforced glulam beams in bending /." Abstract only, 2000. http://www.library.umaine.edu/theses/theses.asp?Cmd=abstract&ID=CIE2000-001.

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12

Poulin, John P. "Bond and Static Bending Strength of FRP-Reinforced Glulam Beams Using Western Wood Species. Vol. 1." Volume 1 Volume 2, 2001. http://www.library.umaine.edu/theses/theses.asp?Cmd=abstract&ID=CIE2001-002.

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13

Baylis, E. R. "Wave propagation in fibre-reinforced laminates." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373799.

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14

Boniface, Lynn. "Damage development in fibre-reinforced plastics' laminates." Thesis, University of Surrey, 1989. http://epubs.surrey.ac.uk/843993/.

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Tensile static and tension-tension fatigue behaviour has been studied in coupon specimens made from continuous fibre reinforced glass/epoxy and carbon/epoxy laminates of various lay-ups, including a series of GFRP and CFRP 0,90,0 cross-ply laminates with different 90° ply thicknesses and CFRP 0, 90, +/-45 laminates with different ply stacking sequences. A variety of techniques has been used to monitor the accumulation of damage; microscopy on the polished edge of coupons, penetrant-enhanced X-radiography for CFRP laminates and visual observations for the transparent GFRP laminates. Under s

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15

Shi, Yibing. "Barely visible impact damage in polymer composite laminates." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334270.

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16

Crocker, Louise. "Mixed mode intra-laminar fracture in glass/epoxy laminates." Thesis, University of Surrey, 1998. http://epubs.surrey.ac.uk/804468/.

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The development of matrix cracking in (0/8/0) glass fibre reinforced epoxy laminates, where 8 = 45°,54 0, 75° and 90°, has been investigated under quasistatic and cyclic loading. All laminates were fabricated using a wet lay-up process to impregnate the fibres before curing. Uniaxial quasi-static tension tests were carried out on samples of each laminate type. Crack initiation and crack propagation in the 8° ply were studied separately using unnotched samples (tested with both as-cut and polished edges) and notched samples, in which the notch introduced is a drilled hole parallel to the fibres

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17

Chen, Fangping. "Study of blister formation in GRP laminates in water." Thesis, Loughborough University, 1989. https://dspace.lboro.ac.uk/2134/33055.

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Glass fibre reinforced polyesters (GRP) are widely used in boat and swimming pool manufacture. One drawback for these materials is that they may develop blistering after prolonged and continuous contact with water. The aim of the research programme reported in this thesis is to understand the fundamental reasons for the blister formation, as well as the factors affecting it. Various polyester resins, epoxy resin, vinyl ester resin, different chopped strand glass mats (CSM) and initiators were used for GRP laminates and blister trials carried out. Blisters were examined visually and by an optic

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18

Mitchell, Jonathan. "Recycled polymers reinforced with paper plastic laminates." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/58274.

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The aim of this research project was to develop new structural materials from the paper plastic laminate (PPL) waste stream. PPLs containing both paper fibre and plastic coatings are problematic for non-thermal recycling options. The current end of life disposal for PPL is primarily landfill. This work focuses on combining PPL wastes with recycled plastics to produce paper plastic composites (PPCs) that can be used as raw materials for a variety of applications. Plastic from a material recycling facility (MRF) consisting of polyolefins, together with polypropylene (PP) from Waste Electrical an

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19

Bartus, Shane D. "Simultaneous and sequential multi-site impact response of composite laminates." Birmingham, Ala. : University of Alabama at Birmingham, 2006. http://www.mhsl.uab.edu/dt/2006p/bartus.pdf.

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Thesis (Ph. D.)--University of Alabama at Birmingham, 2006.<br>Additional advisors: James S. Davidson, Derrick R. Dean, Gregg M. Janowski, Mark L. Weaver. Description based on contents viewed Jan. 24, 2007; title from title screen. Includes bibliographical references (p. 235-246).

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20

Smith, P. "Aspects of the static and fatigue behaviour of composite laminates, including bolted joints." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372919.

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21

Jordan, Andrew R. "Wetpreg Reinforcement of Glulam Beams." Fogler Library, University of Maine, 1998. http://www.library.umaine.edu/theses/pdf/JordanA1998.pdf.

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22

Kretsis, George. "Mechanical characterisation of hybrid glass/carbon fibre-reinforced plastics." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/46982.

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23

Breen, Charles Edward Pitt. "Impact damage in thick carbon fibre reinforced plastic laminated composites." Thesis, University of Bristol, 2007. http://hdl.handle.net/1983/426d2091-43e8-4d4a-ae7a-b0ded8dea0e2.

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24

Meunier, Marion. "Dynamic analysis of FRP laminated and sandwich plates." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342851.

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25

Vietinghoff, Henry (Henry E. ). Carleton University Dissertation Engineering Mechanical and Aerospace. "Compression-after-impact strength of carbon fibre reinforced plastic laminates." Ottawa, 1993.

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26

Sameeuddin, Sameeuddin. "Automated Ultrasonic Signal Classification of Carbon Fiber Reinforced Plastic Laminates." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1497.

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Carbon composites, particularly carbon fiber reinforced plastics (CFRPs) are increasingly being used in many commercial applications such as automobile, aerospace, and civil infrastructures. This increase in the demand of CFRPs has led the manufacturers to research for ways of early detection and classification of defects in CFRP. This thesis work discusses the implementation of a Hopfield neural network (HNN) to automatically detect and classify defects in CFRP by ultrasonic testing (UT). Three of the most common and critical defects found in CFRP, i.e. foreign object (FO) inclusion, impact d

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27

Chandrashekhara, K. "Geometric and material nonlinear analysis of laminated composite plates and shells." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/54739.

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An inelastic material model for laminated composite plates and shells is formulated and incorporated into a finite element model that accounts for both geometric nonlinearity and transverse shear stresses. The elasto-plastic material behavior is incorporated using the flow theory of plasticity. In particular, the modified version of Hill's initial yield criterion is used in which anisotropic parameters of plasticity are introduced with isotropic strain hardening. The shear deformation is accounted for using an extension of the Sanders shell theory and the geometric nonlinearity is considered i

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28

Sedyono, Joko. "Optimisation of stacking sequence of fibre reinforced plastic laminated composite structures subjected to buckling." Thesis, Kingston University, 2014. http://eprints.kingston.ac.uk/29893/.

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The objective of the present work is to develop mathematical/finite element based optimization techniques for fibre reinforced polymer (FRP) laminated composite structures subjected to buckling. Many issues arise when a laminated FRP composite structure subjected to compressive load and ultimately fail under buckling. Issues such as understanding FRP composite materials, buckling and post-buckling behaviour of the structure, delamination and detection of the crack front need attention. Hence, in the present research works were carried out in each of these areas. Various experimental studies we

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29

Kelly, Gordon. "Joining of Carbon Fibre Reinforced Plastics for Automotive Applications." Doctoral thesis, KTH, Aeronautical and Vehicle Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3819.

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<p>The introduction of carbon-fibre reinforced plastics in loadbearing automotive structures provides a great potential toreduce vehicle weight and fuel consumption. To enable themanufacture and assembly of composite structural parts,reliable and cost-effective joining technologies must bedeveloped. This thesis addresses several aspects of joining andload introduction in carbon-fibre reinforced plastics based onnon-crimp fabric reinforcement.</p><p>The bearing strength of carbon fibre/epoxy laminates wasinvestigated considering the effects of bolt-hole clearance.The laminate failure modes and

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30

Moosa, Naina Mohamed Lebbai. "Improvement of interfacial adhesion in plastic packages--dimples, metallic coatings and black oxide /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?MECH%202002%20MOOSA.

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31

Rourk, Dave. "Geometric and material nonlinear effects in elastic-plastic and failure analyses of anisotropic laminated structures." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/76492.

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In this study, an analytical procedure to predict the strength and failure of laminated composite structures under monotonically increasing static loads is presented. A degenerated 3-D shell finite element that includes linear elastic and plastic material behavior with full geometric nonlinearity is used to determine stresses at selected points (Gauss quadrature points in each element) of the structure. Material stiffness (constitutive) matrices are evaluated at each Gauss point, in each lamina and in each element, and when the computed stress state violates a user selected failure criterion,

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32

Short, Graeme John. "The effect of curvature on the impact performance of glass fibre reinforced plastic laminates." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364963.

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33

Wilson, James Harris. "Development and validation of a laminate flooring system sound quality test method." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29660.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Cunefare, Kenneth A.; Committee Member: Qu, Jianmin; Committee Member: Ryherd, Erica. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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34

Flaherty, Annette E. "Support of GRP vessels : a comparative study for the horizontal support of laminate construction GRP storage vessels." Thesis, University of Strathclyde, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366892.

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35

Chai, Gin Boay. "The effect of geometry and prescribed delaminations on the postbuckling behaviour of laminated carbon-fibre reinforced plastic panels." Thesis, University of Strathclyde, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303278.

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36

Ziegenbein, Jordan Michael. "Magnetic clamping structures for the consolidation of composite laminates." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/43588.

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Vacuum bags in conjunction with autoclaves are currently employed to generate the consolidation pressures and temperatures required to manufacture aerospace level composites. As the scale of continuous fiber composite structures increases autoclaving becomes prohibitively expensive or impossible. The objective of this work is to develop flexible magnetic clamping structures to increase the consolidation pressure in conventional vacuum bagging of composite laminates, thereby obviating the need for an autoclave. A ferromagnetic rubber, which consists of rubber filled with iron, is being develope

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37

Ananthasubramanian, Srikanth, and Priyank Gupta. "Early assessment of composite structures : Framework to analyse the potential of fibre reinforced composites in a structure subjected to multiple load case." Thesis, KTH, Lättkonstruktioner, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235309.

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To meet the need of lightweight chassis in the near future, a technological step of introducing anisotropic materials like Carbon Fibre Reinforced Plastics (CFRP) in structural parts of cars is a possible way ahead. Though there are commercially available tools to find suitability of Fibre Reinforced Plastics (FRPs) and their orientations, they depend on numerical optimization and complexity increases with the size of the model. Nevertheless, the user has a very limited control of intermediate steps. To understand the type of material system that can be used in different regions for a lightwei

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38

Nolet, Vincent. "Analytical Methodology to Predict the Behaviour of Multi-Panel CLT Shearwalls Subjected to Lateral Loads." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36999.

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The increasing demand for more sustainable construction has led to the development of new structural systems that include wood as building material. Cross laminated timber (CLT) has been identified as a potential system to address this need and to provide alternative options in the range of low- to medium-rise construction. The appeal in using CLT as a shearwall is driven by the combination of the rigid panels and small dimension fasteners, which allows for significant energy dissipation in the structure. However, there is currently no reliable analytical model to accurately predict the behavi

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39

Machado, Carla Maria Moreira. "Empirical models for quantification of machining damage in composite materials." Doctoral thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/9058.

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Dissertação para obtenção do Grau de Doutor em Engenharia Mecânica<br>The tremendous growth which occurs at a global level of demand and use of composite materials brings with the need to develop new manufacturing tools and methodologies. One of the major uses of such materials, in particular plastics reinforced with carbon fibres, is their application in structural components for the aircraft industry with low weight and high stiffness. These components are produced in near-final form but the so-called secondary processes such as machining are often unavoidable. In this type of industry, dri

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40

Le, Dang Huy. "Modélisation simplifiée des processus de laminage." Phd thesis, Université Paris-Est, 2013. http://pastel.archives-ouvertes.fr/pastel-00966940.

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L'objectif initial de la thèse était de proposer une nouvelle modélisation simplifiée du laminage permettant un calcul rapide, si possible en temps réel, afin que le modèle soit éventuellement intégré à un outil de pilotage des machines de production. Ce modèle ne doit pas négliger les déformations élastiques afin de pouvoir être éventuellement appliqué à l'étude de phénomènes associés à la variation de largeur de la bande ou à des phénomènes de planéité. Il doit par ailleurs être assez ouvert pour que l'on puisse y intégrer éventuellement une description de la microstructure du matériau polyc

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41

Pecku, Suven. "The use of thermoplastic starch for the modification of hydrophilic breathable membranes." Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-06302009-175421/.

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42

Ngo, Quang Tien. "Thermo-elasto-plastic uncoupling model of width variation for online application in automotive cold rolling process." Thesis, Paris Est, 2015. http://www.theses.fr/2015PEST1063/document.

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Afin d'optimiser la mise aux milles au laminage à froid, la thèse consiste à développer un modèle prédictif de variation de largeur à la fois précis et rapide pour des utilisations en temps réel. Des efforts ont commencé en 1960s en développant des formules empiriques. Par la suite, la Méthode des Bornes Supérieures (MBS) est devenue la plus connue. [Oh 1975] utilisant le champ de vitesse 3D "simple" prédit bien la variation de largeur au laminage en conditions d'un tandem finisseur. [Komori 2002] a proposé une combinaison des champs fondamentaux et obtenu une structure informatique peu dépend

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Forget, Mathilde. "Laminage asymétrique de l'alliage de magnésium AZ31." Phd thesis, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00930193.

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L'alliage de magnésium AZ31 présente une très faible densité. Cette caractéristique en fait un matériau apprécié pour la conception de structures légères. La limitation principale de son utilisation industrielle est sa mauvaise formabilité et ce en raison de la texture cristallographique des tôles qui s'avère être peu adaptée aux procédés de mise en forme tel que l'emboutissage. Cette texture résultant du laminage initial, l'ambition de ce travail est de la modifier en utilisant la technique de laminage asymétrique et de mesurer l'impact de cette voie sur la formabilité de l'alliage. Il a été

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44

Kottzieper, Lisa. "Negative health effects related to styrene handling on factory workers." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-47337.

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During a risk assessment undertaken in a factory dealing with fiber reinforced plastic products in the northwestern part of Peninsular Malaysia, styrene was identified as the most potential hazard in the factory. It was therefore chosen to focus the rest of the risk assessment on this chemical. The purpose of this risk assessment was to find out which negative health effects styrene could have on the factory workers, especially on the laminators who are dealing daily with styrene at a close range during lamination through hand lay-up. This was investigated theoretically through a literature re

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45

Porto, Karina Meschini Batista Geribello. "Efeitos da radiação gama (cobalto-60) nas principais propriedades físicas e químicas de embalagens compostas por papel grau cirúrgico e filme plástico laminado, destinada à esterilização de produtos para saúde." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-26112013-102247/.

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A radiação gama é uma das tecnologias aplicadas para a esterilização de sistemas de embalagens contendo produtos para a saúde. No processo de esterilização, é fundamental que as propriedades das embalagens sejam mantidas. Neste estudo, duas amostras de embalagens comerciais, no formato de envelope compostas por papel grau cirúrgico de um dos lados e filme plástico laminado do outro, foram irradiadas com raios gama com doses de 25 kGy (taxa de dose de 1,57 kGy/h) e 50 kGy (taxa de dose de 1,48 kGy/h). Uma das amostras de embalagem era constituída por papel de fibras de coníferas e filme plástic

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46

Granat-David, Chantal. "Modelisation tridimensionnelle par elements finis de l'ecoulement d'un materiau viscoplastique pour l'etude du laminage a chaud." Paris, ENMP, 1987. http://www.theses.fr/1987ENMP0045.

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Mise au point d'un modele thermomecanique du laminage a chaud, destine a fournir la geometrie du metal, les cartes de temperature, d'ecrouissage, de contraintes et d'endommagement qu'il a subi ainsi que les efforts et couples de laminage

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Passos, Adriano Gonçalves dos. "Otimização global eficiente aplicada a projetos de laminados de rigidez variável." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/1879.

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CAPES<br>A otimização global eficiente (ego, do inglês efficient global optimization), apresentada por Donald R. Jones no final da década de 90, tem como proposta solucionar problemas de otimização nos quais, devido a um elevado custo computacional da função objetivo, o número de avaliações desta é severamente limitado. ego baseia-se na otimização pelo uso de superfícies de resposta ou metamodelos, que são funções de baixo custo computacional que se ajustam aos dados “experimentais” (de experimentos físicos, cálculos analíticos ou simulações numéricas) obtidos em pontos escolhidos no domínio d

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48

Béchade, Jean-Luc. "Texture et écrouissage de tôles en zircaloy-4 : évolutions en fonction des paramètres de laminage à froid : influence sur le comportement élastique, la dilatation thermique et l'anisotropie plastique." Ecole centrale de Nantes, 1993. http://www.theses.fr/1993NANT2083.

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Les travaux sur le lien entre la fabrication et la texture à partir de tôles en zircaloy-4 laminées à froid permettent de quantifier l'influence du type de laminage, du taux d'écrouissage et du traitement thermique sur la texture et les caractéristiques mécaniques résultantes. Ces travaux sont complétés par une analyse de l'état structural et des niveaux de contrainte induits au cours des différents traitements mécaniques et thermiques. Le laminage unidirectionnel suivant la direction initiale de laminage ne fait qu'augmenter l'anisotropie du produit initial, sans modifier le type de texture.

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49

Munier, Rémi. "Etude de la fatigue des aciers laminés à partir de l'auto-échauffement sous sollicitation cyclique : essais, observations, modélisation et influence d'une pré-déformation plastique." Thesis, Brest, 2012. http://www.theses.fr/2012BRES0087/document.

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La détermination des propriétés en fatigue à grand nombre de cycles des aciers laminés destinés à l'industrie automobile est un processus coûteux en temps et en quantité de matière : 25 éprouvettes et presque un mois d'essais sont nécessaires à l'obtention d'une courbe de fatigue standard. Dans l'objectif de réduire ces temps de caractérisation, une méthode rapide, basée sur l'auto-échauffement de la matière sous sollicitation cyclique est mise en place sur un très grand nombre de nuances. Les mesures d'auto-échauffement mettent en évidence la présence de deux régimes dissipatifs distincts, un

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50

Brunel, Jean-Evrard. "Influence de l'endommagement sur la rupture de plaques composites en présence de surcontraintes." Paris 13, 1989. http://www.theses.fr/1989PA132008.

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On cherche à définir un critère de rupture d'éprouvettes trouées en matériau composite stratifiés croisé. Des essais de traction statique uniaxiale, menés sur 3 matériaux (T300-5208, T300-6376, T400-6376) agencés sous différentes séquences d'empilement conduisent à déterminer l'influence de la nature du renfort ou de la matrice sur les mécanismes d'endommagement.

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