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Статті в журналах з теми "Polymer modelling usingy"
Saadatfar, M., and A. Soleimani. "Simulation of Spherical Nanoindentation of Nanocomposites Using FEM." Advanced Materials Research 403-408 (November 2011): 1188–91. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.1188.
Повний текст джерелаHoang, Mai Quyen, Thi Thu Nga Vu, Manh Quan Nguyen, and Severine Le Roy. "Modelling the conduction mechanisms in low density polyethylene material using finite element method." Ministry of Science and Technology, Vietnam 63, no. 1 (January 30, 2021): 27–33. http://dx.doi.org/10.31276/vjst.63(1).27-33.
Повний текст джерелаRaje, Vishvesh, Siddhant Palekar, Sabrina Banella, and Ketan Patel. "Tunable Drug Release from Fused Deposition Modelling (FDM) 3D-Printed Tablets Fabricated Using a Novel Extrudable Polymer." Pharmaceutics 14, no. 10 (October 14, 2022): 2192. http://dx.doi.org/10.3390/pharmaceutics14102192.
Повний текст джерелаMarti, Julio, Jimena de la Vega, De-Yi Wang, and Eugenio Oñate. "Numerical Simulation of Flame Retardant Polymers Using a Combined Eulerian–Lagrangian Finite Element Formulation." Applied Sciences 11, no. 13 (June 26, 2021): 5952. http://dx.doi.org/10.3390/app11135952.
Повний текст джерелаЗиле, Э., Д. Зеленякене та A. Анискевич. "Определение характеристик изделий из полимолочной кислоты, изготовленных методом моделирования наплавления". Механика композитных материалов 58, № 2 (2022): 241–56. http://dx.doi.org/10.22364/mkm.58.2.02.
Повний текст джерелаKotoul, Michal, Petr Skalka, and Ivo Dlouhy. "Crack Bridging Modelling in Bioglass® Based Scaffolds Using Gradient Elasticity Theory." Key Engineering Materials 665 (September 2015): 105–8. http://dx.doi.org/10.4028/www.scientific.net/kem.665.105.
Повний текст джерелаSatyanarayana, K. C., J. Abildskov, R. Gani, G. Tsolou, and V. G. Mavrantzas. "Computer aided polymer design using multi-scale modelling." Brazilian Journal of Chemical Engineering 27, no. 3 (September 2010): 369–80. http://dx.doi.org/10.1590/s0104-66322010000300002.
Повний текст джерелаSalifu, Smith, and Peter Apata Olubambi. "Thermomechanical properties prediction of wood-flour reinforced polymer composites using representative volume element (RVE)." MATEC Web of Conferences 370 (2022): 03002. http://dx.doi.org/10.1051/matecconf/202237003002.
Повний текст джерелаAmir, Shahizat, Mohamed Nor Sabirin, and Siti Aishah Hashim Ali. "Using Polymer Electrolyte Membranes as Media to Culture Fractals: A Simulation Study." Advanced Materials Research 93-94 (January 2010): 35–38. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.35.
Повний текст джерелаDutt, J. K., and H. Roy. "Viscoelastic modelling of rotor—shaft systems using an operator-based approach." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 225, no. 1 (June 11, 2010): 73–87. http://dx.doi.org/10.1243/09544062jmes2064.
Повний текст джерелаДисертації з теми "Polymer modelling usingy"
Godat, Ahmed. "Finite element modelling of externally shear-strengthened beams using fibre reinforced polymers." Thèse, Université de Sherbrooke, 2008. http://savoirs.usherbrooke.ca/handle/11143/1825.
Повний текст джерелаTann, David Bohua. "Retrofitting of mechanically degraded concrete structures using fibre reinforced polymer composites." Thesis, University of South Wales, 2001. https://pure.southwales.ac.uk/en/studentthesis/retrofitting-of-mechanically-degraded-concrete-structures-using-fibre-reinforced-polymer-composites(efce1110-34e1-457d-8ec5-3ef5da026018).html.
Повний текст джерелаZenia, Sofiane. "Modélisation numérique de l’usinage des matériaux composites à matrice polymère et fibres longues de carbone." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0126/document.
Повний текст джерелаThe machining of composite materials is often necessary for material removal operations by cutting tools such as drilling. These operations can generate a lot of damage in the machined workpiece (fiber fracture, matrix craking, intralaminar and interlaminar delamination and thermal degradation of the matrix), which can cause a decrease of mechanical performance of the structure. The PhD thesis objective is to set up a reliable accurate model to analyze the machining of CFRP composites and to predict the different damage modes induced by the cutting tool. This model is based on a mesomechanical constitutive law combining the stiffness degradation concept into the material behavior, the plasticity, the initiation and the evolution of the damage during the machining process. Two 2D and 3D models adopting an explicit scheme were implemented in Abaqus/Explicit analysis code through the user subroutine VUMAT. Furthermore, interlaminar delamination is taken into account using the cohesive elements available in the ABAQUS / Explicit code. This work allowed to realistic numerical simulation of orthogonal cutting and drilling operations of CFRP composites in terms of chip formation process, cutting forces prediction and induced damage. These studies have shown that the fiber orientation and the depth of cut were the most influential parameters in orthogonal cutting while for the drilling process, the feed rate and the tool geometry are the most important parameters
Rosala, George Florin. "The process mechanics of polymer pipes welding by electro-fusion : a theoretical and experimental analysis of the electro-fusion welding process applied to polymer pipes. Process modelling using finite element and finite difference methods." Thesis, University of Bradford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.574642.
Повний текст джерелаGuan, Juan. "Investigations on natural silks using dynamic mechanical thermal analysis (DMTA)." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:c16d816c-84e3-4186-8d6d-45071b9a7067.
Повний текст джерелаMcGee, Seán. "Thermal energy management and chemical reaction investigation of micro-proton exchange membrane fuel cell and fuel cell system using finite element modelling." Thesis, KTH, Kraft- och värmeteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173001.
Повний текст джерелаKgorane, Nomathemba. "Adsorption modelling of desulphurisation of light diesel fuel using Chloramine T and Polymer Supported Imidation Agent." Thesis, 2017. https://hdl.handle.net/10539/24856.
Повний текст джерелаIn petroleum industry, sulphur compounds are undesirable due to potential corrosions and environmental challenges associated with these compounds. Sulphur occurs in varies forms in crude oil and petroleum products such as, marcaptans, disulphide, sulphides, disulphide H2S and thiophenes. Commercial scale refineries utilises hydrodesulphurisation to reduce the sulphur content in fuels, though this technology is associated with high operating and capital cost. Extractive, adsorptive, oxidative, membrane separation and bio desulphurisation are some of the alternative technology being investigated which have proven not to be as efficient and/or cost effective as compared to hydrodesulphurisation. Adsorption desulphurisation has been effective in separation processes where the sorbate concentrations are low and this technology was used to evaluate the performance of the polymer supported imidation agent (Sodium N-chloro-polystyrene sulphonamide) as an adsorbent in diesel fuel desulphurisation. A mathematical model simulating adsorption on a fixed was developed. This model incorporates internal mass transfer assuming laminar flow, constant interstitial velocity and an isothermal system. To represent liquid solid equilibrium the Langmuir isotherm was used. The model contains partial differentiate equation that were linearised by using the Euler’s forward implicit method, this enabled simulating the model using Microsoft Excel Visual Basic. The obtained simulation results were compared against experimental data. The impact of varying parameters such as initial sulphur concentration, adsorbent bed porosity and external bed surface area per particle volume was studied in detail. Existing isotherms and kinetics were discussed by using experimental data from Fadhel’s study. It was found that the adsorbate residence time is reduced by smaller adsorbent bed porosity resulting in increased adsorption rate. By decreasing the adsorbent particle diameter and an increase in initial sulphur concentration, the breakthrough time is decreased. The experiment data agreed with the simulation results and this validate that the proposed model is applicable to study the performance of fixed bed adsorption processes under isothermal conditions, no axial mixing and constant interstitial velocities. The results from the analysed Fadhel’s data showed that the modelled light oil can be desulphurise to the Euro 5 level requirements, Sulphur <500ppm, by both Chloramine T and Synthesis PI, a complete sulphur removal was achieved using both adsorbents. The desulphurisation rate proved to be faster with Chloramine T as an adsorbent as compared to Synthesis PI. Modelled light oil adsorption obeyed the pseudo-first-order kinetics and the overall adsorption rate was controlled by the chemisorption process. The diesel fuels study by Fadhel could not be desulphurised to the Euro 5 level. The diesel fuel 1 sulphur concentration was reduced from 12 354 to 11 200ppm and diesel fuel 2 from 1 900 to 800ppm. It was observed that the rate of desulphurisation proved to be faster with diesel fuel 1 as compared to that of diesel fuel 2. The Freundlich isotherm was found to be a best fit in the adsorption of diesel fuel 1, the attained R square values was 0.881 and 0.435 for Freundlich and Langmuir, respectively. Also the obtained Langmuir separation factor, RL , of 1 confirmed the that the Langmuir adsorption was unfavourable. This implies that the adsorption rate was controlled by a physisorption process. The diesel fuel 2 desulphurisation process did not fit the studied adsorption isotherms, the attained R square values was 0.433 and 0.218 for Freundlich and Langmuir, respectively. The Langmuir separation factor confirmed in-favourability at 1 and the Freundlich adsorption strength was 6.052, which is very low as compared to that pf diesel fuel 1 at 272.41. Diesel fuel 1 adsorption reaction obeyed the pseudo-second and pseudo-first order kinetics when reacted with Chloramine T and Synthesis PI, respectively. The obtained R squared values were 0.694 and 0.999 for pseudo-second and pseudo-first order, respectively. Diesel fuel 2 obeyed the third order kinetics with both Chloramine T and Synthesis PI, with R squared values calculated at 0.889 and 0.774 for Chloramine T and Synthesis PI reaction, respectively.
XL2018
Silva, Cátia Samanta Ribeiro. "Polymeric microsensors using microtechnologies." Doctoral thesis, 2016. http://hdl.handle.net/1822/42537.
Повний текст джерелаThe work present here aims to combine advanced and specialized polymeric materials and microtechnologies with silicon based microtechnologies to develop an innovative concept for a thermal convective accelerometer with improved performance while also overcoming existing limitations. Thermal convective accelerometers have a transduction mechanism based in heat transfer by convection over a working fluid. The thermal accelerometer is a relatively recent technology and although research focused in improving many properties, parameters and processing techniques, thermal accelerometers still present some drawbacks regarding the power consumption caused by thermal losses through the fabrication material (typically silicon based) and limited third sensing dimension (planar silicon based microtechnologies). New developments towards the optimization of the existing thermal accelerometers may limit the power consumption and allow an easy integration of a Z-axis sensitive dimension. The methodology from the development of a concept to the actual fabrication and characterization requires a series of steps that need to be followed in a sequential way, namely: design and simulation analysis of the device concept (considering the electrical, thermal and fluidic domains), based on CAD and FEM techniques (using a FSI approach); development (project and simulation analysis) of tools based on CAD and CFD techniques; definition and optimization of a fabrication methodology (combination of polymeric and silicon based microtechnologies); and a full characterization of the fabricated device (sensitivity, bandwidth, dynamic range, and power). A three-axes thermal convective accelerometer was fully manufactured containing two main components: a polymeric based external structure fabricated my means of microinjection moulding technology that generates an isolated chamber from outside influences while supporting the second component, a polymeric flexible membrane that sustains and protects the metallic heating and sensing elements fabricated by microtechnologies. The proposed solution for the fabrication of a three-dimensional polymer based thermal accelerometer based in convection is innovative and the main contribution will be the use of polymeric materials not commonly used in microsystem technology and in electronic and instrumentation systems that are suitable to solve the main problems related to the current stateof- art of thermal accelerometers. Fabricated accelerometers were fully tested and characterized presenting a XY-axes sensitivity around 8 mV/g, a Z-axis sensitivity of 2.2 mV/g, and a 4 Hz bandwidth for a power of 45 mW. Thermal tests performed show that the heater can sustain up to 280 ºC without overheating the remaining structures and damaging the device. The developed technology has huge potential for functional highly complex threedimensional geometries at the micro-scale.
O trabalho aqui apresentado tem como intuito combinar materiais e microtecnologias poliméricas avançadas e especializadas com microtecnologias à base de silício para o desenvolvimento de um conceito inovador para um acelerómetro térmico convectivo com um desempenho melhorado superando também as limitações existentes. Os acelerómetros térmicos convectivos tem um mecanismo de transdução baseado na transferência de calor por convecção através de um fluído funcional. O acelerómetro térmico é uma tecnologia relativamente recente e embora os estudos científicos se tenham focado na otimização de diversas propriedades, parâmetros e técnicas de processamento, os acelerómetros térmicos ainda apresentam algumas desvantagens relativas ao consumo energético provocado pelas perdas térmicas através do material de fabrico (normalmente à base de silício) e também uma terceira dimensão sensível limitada (microtecnologias planares à base de silício). Novos desenvolvimentos no sentido da otimização dos existentes acelerómetros térmicos podem limitar o consumo energético e permitir uma integração mais fácil da dimensão sensível do eixo dos ZZ. A metodologia desde o desenvolvimento do conceito até à atual fabricação e caracterização requere uma série de etapas que necessitam de ser seguidas de uma forma sequencial, nomeadamente: projeto e análise por simulação do conceito do dispositivo (considerando os domínios elétrico, térmico, e fluídico), com base em técnicas CAD e FEM (através de uma abordagem FSI); desenvolvimento (projeto e análise por simulação) de ferramentas com base em técnicas CAD e CFD; definição e otimização de uma metodologia de fabrico (combinação de microtecnologias de polímeros com microtecnologias à base de silício); e uma caracterização completa do dispositivo fabricado (sensibilidade, largura de banda; gama dinâmica, e energia). Um acelerómetro térmico convectivo com três eixos foi inteiramente fabricado contendo dois componentes principais: uma estrutura externa à base de polímeros fabricada através da tecnologia de moldação por microinjeção gerando uma câmara isolada de influências externas que suporta o segundo componente, uma membrana polimérica flexível que sustem e protege os elementos metálicos de aquecimento e sensoriais fabricados por microtecnologias. A solução proposta para o fabrico de um acelerómetro térmico polimérico tri-dimensional baseado em convecção é inovativa e a principal contribuição consiste no uso de materiais poliméricos não comumente utilizados na tecnologia de microsistemas e na electrónica e instrumentação de sistemas que são adequados para solucionar os principais problemas relacionados com o atual estado da arte dos acelerómetros térmicos. Os acelerómetros fabricados foram testados e caracterizados apresentando uma sensibilidade de cerca de 8 mV/g para os eixos XY e 2.2 mV/g para o eixo ZZ, e uma largura de banda de 4 Hz para uma energia de 45 mW. Foram realizados testes térmicos demonstrando que a resistência de aquecimento consegue suportar até 280 ºC sem sobreaquecimento das restantes estruturas e sem danificar o dispositivo. A tecnologia desenvolvida apresenta um grande potencial para geometias tri-dimensionais altamente complexas e funcionais à escala micro.
Portuguese Fundação para a Ciência e a Tecnologia (FCT), for the financial support under the PhD scholarship SFRH/BD/78372/2011). The work was supported by FEDER through COMPETE and national funds through FCT in the framework of the project PTDC/EEA-ELC/099834/2008. The author would like to acknowledge the doctoral program in Science and Engineering of Polymers and Composites for supporting this work.
Книги з теми "Polymer modelling usingy"
Allen, Michael P., and Dominic J. Tildesley. Advanced Monte Carlo methods. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198803195.003.0009.
Повний текст джерелаЧастини книг з теми "Polymer modelling usingy"
Berge, A., T. Ellingsen, A. T. Skjeltorp, and J. Ugelstad. "Modelling of Physical Processes Using Monosized Polymer Particles." In Scientific Methods for the Study of Polymer Colloids and Their Applications, 435–52. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-1950-1_20.
Повний текст джерелаIvankovic, A., and J. G. Williams. "Modelling Dynamic Fracture in Polymers Using a Local Modulus Concept." In Dynamic Failure of Materials, 378–96. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3652-5_27.
Повний текст джерелаHood, Angus, Shaun Slater, Matthew Bouchet, Sheikh Zahidul Islam, and Mamdud Hossain. "Parametric Study of Polymer Electrolyte Membrane Fuel Cell Performance Using CFD Modelling." In Renewable Energy in the Service of Mankind Vol I, 159–71. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17777-9_15.
Повний текст джерелаBurriss, Elise T., Gursel Alici, Geoffrey M. Spinks, and Scott McGovern. "Modelling and Performance Enhancement of a Linear Actuation Mechanism Using Conducting Polymers." In Informatics in Control Automation and Robotics, 63–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19730-7_5.
Повний текст джерелаKumar, Rajneesh, Prabhat Agnihotri, Rohit Kumar, Pradyumn Yadav, and Pawan Kumar Arora. "Review on Process Parameters of FDM and Their Impact on Flexure Strength of Additive Manufacturing Specimen." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220807.
Повний текст джерелаChan, P. H., K. Y. Tshai, M. Johnson, and S. Li. "Finite element analysis (FEA) modelling of fiber-reinforced polymer (FRP) repair in offshore risers." In Rehabilitation of Pipelines Using Fiber-reinforced Polymer (FRP) Composites, 177–210. Elsevier, 2015. http://dx.doi.org/10.1016/b978-0-85709-684-5.00009-6.
Повний текст джерелаHulatt, J., L. C. Hollaway, and A. M. Thorne. "MODELLING A COMPOSITE/CONCRETE T-BEAM USING A FINITE ELEMENT TECHNIQUE." In Advanced Polymer Composites for Structural Applications in Construction, 361–68. Elsevier, 2004. http://dx.doi.org/10.1533/9781845690649.4.361.
Повний текст джерелаHaghani, R. "Finite element modelling of adhesive bonds joining fibre-reinforced polymer (FRP) composites to steel." In Rehabilitation of Metallic Civil Infrastructure Using Fiber Reinforced Polymer (FRP) Composites, 60–95. Elsevier, 2014. http://dx.doi.org/10.1533/9780857096654.1.60.
Повний текст джерелаCarreras, Laura, Gerard Guillamet, Adrià Quintanas-Corominas, Jordi Renart, and Albert Turon. "Mesoscale modelling of delamination using the cohesive zone model approach." In Multi-Scale Continuum Mechanics Modelling of Fibre-Reinforced Polymer Composites, 555–77. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-818984-9.00018-4.
Повний текст джерелаReese, Stefanie, and Böl Markus. "Computational testing and modelling of polymers and soft tissue using chain statistics." In Constitutive Models for Rubber IV, 155–64. Routledge, 2017. http://dx.doi.org/10.1201/9781315140216-26.
Повний текст джерелаТези доповідей конференцій з теми "Polymer modelling usingy"
John, Anthony Okon, Ogbonna Friday Joel, and Franklin Chukwuma. "Modelling Degradation Time of Hydroxyethyl Cellulose-Based Polymeric Fluids." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/212022-ms.
Повний текст джерелаDaan, Boris, Jelle Rommers, and Just L. Herder. "Modelling the Axis Drift of Short Wire Flexures and Increasing Their Support Stiffness Using Polymers." In ASME 2021 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/detc2021-68255.
Повний текст джерелаRavndal, Kristin T., and Roald Kommedal. "Modelling particle degradation and intermediate dynamics in a dispersed activated sludge microcosm." In 63rd International Conference of Scandinavian Simulation Society, SIMS 2022, Trondheim, Norway, September 20-21, 2022. Linköping University Electronic Press, 2022. http://dx.doi.org/10.3384/ecp192002.
Повний текст джерелаBernard, C. A., K. Ogawa, J. Y. Cavaillé, O. Lame, K. Ravi, and T. Deplancke. "On the Premise of Polymer Coating Modelling for Cold-Spray Process." In ITSC2018, edited by F. Azarmi, K. Balani, H. Li, T. Eden, K. Shinoda, T. Hussain, F. L. Toma, Y. C. Lau, and J. Veilleux. ASM International, 2018. http://dx.doi.org/10.31399/asm.cp.itsc2018p0366.
Повний текст джерелаBenseddiq, Noureddine, Moussa Nai¨t-Abdelaziz, and Nai¨ma Belayachi. "Numerical Modelling of Cavitation in Polymer-Rubber Blends." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61258.
Повний текст джерелаIonita, Mariana, Davide Silvestri, Alfonso Gautieri, Emiliano Votta, Gianluca Ciardelli, and Alberto Redaelli. "Molecular Modelling of Small Molecule Diffusion in Biopolymer Blends Membranes for Biomedical Applications." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95671.
Повний текст джерелаHawari, Huzein Fahmi, Nurul Maisyarah Samsudin, Mohd Noor Ahmad, Ali Yeon Md Shakaff, Supri A. Ghani, Yufridin Wahab, and Uda Hashim. "Recognition of Limonene Volatile Using Interdigitated Electrode Molecular Imprinted Polymer Sensor." In 2012 3rd International Conference on Intelligent Systems, Modelling and Simulation (ISMS). IEEE, 2012. http://dx.doi.org/10.1109/isms.2012.103.
Повний текст джерелаBoutaous, M., E. Pe´rot, A. Maazouz, P. Bourgin, and P. Chantrenne. "Heat Transfer and Air Diffusion Phenomena in a Bed of Polymer Powder Using Apparent Heat Capacity Method: Application to the Rotational Molding Process." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37181.
Повний текст джерелаFechter, Reinhard, Ines Kühnert, Carl Sandrock, and Johan Labuschagné. "Modelling and optimization of the mechanical and other material properties of a polymer nanocomposite using statistical design of experiments." In PROCEEDINGS OF THE EUROPE/AFRICA CONFERENCE DRESDEN 2017 – POLYMER PROCESSING SOCIETY PPS. Author(s), 2019. http://dx.doi.org/10.1063/1.5084832.
Повний текст джерелаRosenblatt, F., J. F. Morrison, and L. Iannucci. "Modelling electroactive polymer (EAP) actuators: electro-mechanical coupling using finite element software." In The 15th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, edited by Yoseph Bar-Cohen. SPIE, 2008. http://dx.doi.org/10.1117/12.776086.
Повний текст джерела