Дисертації з теми "Polymer Tribology"
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Eichhorn, Sven, Brit Clauß, and Klaus Nendel. "Untersuchungen zum tribologischen Verhalten von hochgefüllten WPC (Wood Polymer Composite) als Maschinenbaukomponente." Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-89811.
Повний текст джерелаThe aim of the research was to create basic knowledge for the use of highly filled WPC in tribological functional machine elements, e. g. sliding rails in conveyors. Based on a short-term test of several highly filled WPCs with polypropylene matrix (PP matrix), the impact of several parameters on the long-term performance of WPC was investigated. These parameters were: a rising proportion of wood, an immersion in water over 700 hours and the matrix itself. In that case the PP matrix was replaced by a polyethylene matrix (PE matrix)
Lind, Jonna. "Tribology of polymer composites for elevated temperature applications." Licentiate thesis, Uppsala universitet, Tillämpad materialvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-332985.
Повний текст джерелаAlharbi, Khalid Abdulkhaliq M. "The mechanical contact behaviour and tribology of polymer gears." Thesis, University of Warwick, 2018. http://wrap.warwick.ac.uk/103328/.
Повний текст джерелаBabak, LotfizadehDehkordi Dr. "RHEOLOGY AND TRIBOLOGY OF LUBRICANTS WITH POLYMERIC VISCOSITY MODIFIERS." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1438208488.
Повний текст джерелаEichhorn, Sven, Brit Clauß, and Ann-Kathrin Harsch. "Rad aus WPC (Wood Polymer Composite) zum Einsatz in der Fördertechnik." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-188694.
Повний текст джерелаA component- and material development for a wheel made from WPC (Wood Polymer Composite) is presented. The wheel is the demonstrator for a WPC-wheel design for the use in the intralogistics. The wheel has a load limit of 150kg. Staticmechanical investigations of different material compositions and wheel designs are presented. Tribological investigations of selected wheels are shown, to give an estimation of the prototype’s usability and the effectiveness of the general wheel design
Cramer, Kay, and Sven Eichhorn. "Charakterisierende Untersuchungen zum Reibungs- und Verschleißverhalten von Polyethylen (PE), gefüllt mit Haferspelzen." Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-78594.
Повний текст джерелаVentura, Cervellón Alejandra Marcela. "Sustainable polymer-tribology : Developing novel multiscale thermoplastic composites using recycled high-performance fibers." Thesis, Luleå tekniska universitet, Maskinelement, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-86910.
Повний текст джерелаSimmons, Gregory F. "Synthetic lubricants and polymer composites for large full film journal bearings." Licentiate thesis, Luleå tekniska universitet, Maskinelement, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26740.
Повний текст джерелаGodkänd; 2011; 20110204 (gresim); LICENTIATSEMINARIUM Nedanstående person kommer att hålla licentiatseminarium för avläggande av teknologie licentiatexamen. Namn: Gregory F. Simmons Ämnesområde: Maskinelement/Machine Elements Uppsats: Synthetic Lubricants and Polymer Composites for Large Full Film Journal Bearings Examinator: Professor Sergei Glavatskih, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Diskutant: Professor Patrick De Baets, Soete Laboratory, Ghent University, Belgium Tid: Måndag den 14 mars 2011 kl 10.00 Plats: E231, Luleå tekniska universitet
Whitten, Philip Gregory. "Friction induced plastic deformation of high polymer surfaces." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20050118.113517/index.html.
Повний текст джерелаCramer, Kay, Sven Eichhorn, Thomas Rolle, Franziska Seidel, and Katharina Frohberg. "Hochbelastbare Führungs- und Stützelemente für Zug- und Tragmittel in der Fördertechnik auf Basis nachwachsender Rohstoffe." Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-78583.
Повний текст джерелаTECHENS, CHLOE. "Metal-on-Polymer Wear for Orthopaedic Hand Prostheses : Metall-på-polymer-slitage för ortopediska handproteser." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-230798.
Повний текст джерелаEichhorn, Sven, Brit Clauß, Klaus Nendel, and Michael Gehde. "Entwicklung eines kompletten Trag- und Gleitprofils aus WPC (Wood Polymer Composite) für ein Hängefördersystem." Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-129718.
Повний текст джерелаBased on research with an sectional beam in hybrid design made from aluminium and WPC (Wood Polymer Composite), the important steps for developing a fully implemented sectional WPC-beam are presented. This sectional beam is intended for the use in an overhead conveying system
Mary, Charlotte. "Physico-chemistry, high pressure rheology and film-forming capacity of polymer-base oil solutions in EHL." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0013/document.
Повний текст джерелаThe development of high value-added lubricants overcoming more and more drastic operating conditions, fuel-efficient and providing excellent performance during a long time remains a huge challenge for oil makers. This thesis is dedicated to the study of the role and the actions of Viscosity Index Improvers (VII) in engine lubricants. The first objective targeted in this work is the characterization of the rheological behaviors and the modeling of viscosity in function of realistic conditions of temperature, pressure and shear stress for polymer-thickened base oil solutions without functional additives. Several polymers (PAMA, OCP and PISH) with different molecular weights and conformations (comb, linear and star) are used with a concentration of 1.2% (w/w) in a hydrocracked mineral base oil. The originality of the thesis lies in the use of non-commercial rheometers under high pressure (up to 800 MPa). A second challenge is the understanding of the relationship between the rheological response of simplified engine lubricants and the mechanisms occurring at the molecular scale by exploring the notions of conformation, solubility and hydrodynamic radius by the extension of the Einstein’s law at high pressure. Finally, the study focuses on the link between rheology and tribology and by extrapolation, between the chemical composition of the lubricant and tribology. The film thickness is measured and compared with the Hamrock-Dowson analytical predictions and with the numerical simulations based on the generalized Reynolds’ equation including the rheological models. Both experimental and numerical data are in good agreement
Dutta, Madhuri. "Modified epoxy coatings on mild steel: A study of tribology and surface energy." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc12119/.
Повний текст джерелаJain, Ayush. "Development and Characterization of Multi-scale Polymer Composite Materials for Tribological Applications." Thesis, Luleå tekniska universitet, Maskinelement, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65241.
Повний текст джерелаAl-Kawaz, Ammar. "Development and rheological analysis of a surface polymer nanocomposite anti-friction." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAE025/document.
Повний текст джерелаThe goal of this thesis is the identification of couplings (nanoparticles / matrix poly (methyl methacrylate) PMMA) which ensure PMMA surface rigidity while maintaining maximum transparency. The choice fell on three types of carbonaceous nanoparticles: Few layer graphene (FLG), graphene oxide (GO) and carbon nanotubes (MWCNT). A first part describes the preparation and functionalization of these three types of nanoparticles to provide a better dispersion in the matrix. Two methods were used to prepare nanocomposite materials: bulk polymerization and solution blending. A second part presents the characterization of the mechanical properties of these coatings in three stages: volume, surface and thin layer coating (15-20μm). The main results show that nanocomposites made delay the onset of plasticity compared with pure PMMA, even at a low percentage, and help to limit the effects of surface scratches. The small percentage of reinforcement keeps the transparency and the more the thickness decreases the more the rate of reinforcement can increase without degrading the mechanical properties of the coating. Moreover, nanoparticles chosen as the polymer matrix of reinforcing agents prove to be very good candidates for reduction in friction compared to a plasticizer such Erucamide
Cusseau, Pauline. "The role of polymer additives on the behavior of engine lubricants in elastohydrodynamic and thin film regimes : From rheology to tribology." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI020.
Повний текст джерелаThe development of high-performance lubricants to reduce engine friction and consequently fuel consumption remains a major challenge for oil manufacturers. Viscosity Index Improvers (VII) are polymer additives used for decades to limit the dependency of the lubricant’s viscosity on temperature, to maintain an acceptable hydrodynamic lubrication at high temperature, without experiencing excessive frictional and thermal losses at low temperature. This work focuses on understanding the role of VII in engine lubricants with the aim to bridge their tribological response with their rheological behavior. Simplified lubricants are studied, composed of various polymers of different molecular weights and conformations added to a mineral base oil. In a first part, the viscosity-temperature-pressure dependence of these lubricants is investigated. Their rheological behavior is shown to result from mechanisms occurring at molecular scale, by considering the notions of solubility, hydrodynamic radii and conformation effects. In a second part, the viscosity-shear stress dependence is discussed according to the polymers structure and predicted on a large range of temperatures and pressures through a conventional model. However, the strong assumptions behind this model lead us to propose a more appropriate relationship which takes into account the viscoelastic properties of the lubricants. Finally, film thickness measurements are conducted to explore how the polymer addition affects the lubricant’s response in the Elastohydrodynamic and Thin Film regimes. They are compared with analytical predictions based on the rheological models established previously. It is shown that i) there is a good agreement between predictions and measured film thicknesses in the EHD regime and ii) at lower thickness, i.e. in the Thin Film regime, some polymers show a critical thickness from which the film thickness significantly departs from the predictions. Several explanations are considered, among them the non-Newtonian behavior of the lubricants and the adsorption of polymers on the solid bodies
Silva, Ruthilene Catarina Lima da. "Desgaste de pol?meros estruturais de engenharia em contato de deslizamento com cilindro met?lico." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15565.
Повний текст джерелаCoordena??o de Aperfei?oamento de Pessoal de N?vel Superior
Present work proposed to map and features the wear mechanisms of structural polymers of engineering derived of the sliding contact with a metallic cylindrical spindle submitted to eccentricity due to fluctuations in it is mass and geometric centers. For this it was projected and makes an experimental apparatus from balancing machine where the cylindrical counterbody was supported in two bearings and the polymeric coupon was situated in a holder with freedom of displacement along counterbody. Thus, the experimental tests were standardized using two position of the two bearings (Fixed or Free) and seven different positions along the counterbody, that permit print different conditions to the stiffness from system. Others parameters as applied normal load, sliding velocity and distance were fixed. In this investigation it was used as coupon two structural polymers of wide quotidian use, PTFE (polytetrafluroethylene) and PEEK (poly-ether-ether-ketone) and the AISI 4140 alloy steel as counterbody. Polymeric materials were characterized by thermal analysis (thermogravimetric, differential scanning calorimetry and dynamic-mechanical), hardness and rays-X diffractometry. While the metallic material was submitted at hardness, mechanical resistance tests and metallographic analysis. During the tribological tests were recorded the heating response with thermometers, yonder overall velocity vibration (VGV) and the acceleration using accelerometers. After tests the wear surface of the coupons were analyzed using a Scanning Electronic Microscopy (SEM) to morphological analysis and spectroscopy EDS to microanalysis. Moreover the roughness of the counterbody was characterized before and after the tribological tests. It was observed that the tribological response of the polymers were different in function of their distinct molecular structure. It were identified the predominant wear mechanisms in each polymer. The VGV of the PTFE was smaller than PEEK, in the condition of minimum stiffness, in function of the higher loss coefficient of that polymer. Wear rate of the PTFE was more of a magnitude order higher than PEEK. With the results was possible developed a correlation between the wear rate and parameter (E/ρ)1/2 (Young modulus, E, density, ρ), proportional at longitudinal elastic wave velocity in the material.
O presente trabalho prop?s-se a mapear e caracterizar os mecanismos de desgaste de pol?meros estruturais de engenharia oriundos do contato de deslizamento com um eixo-?rvore cil?ndrico rotativo met?lico submetido a excentricidades decorrentes de flutua??es em seu centro de massa e centro geom?trico. Para isso projetou-se e confeccionou-se uma bancada experimental a partir de uma m?quina balanceadora, onde o contracorpo cil?ndrico era apoiado em dois mancais e o corpo-de-prova polim?rico era posicionado em um portaamostra com liberdade de deslocamento ao longo do contracorpo. Desta forma, os ensaios experimentais foram parametrizados utilizando duas posi??es dos mancais (Fixos ou livres) e sete posi??es distintas ao longo do contracorpo, o que permitiu imprimir condi??es diferentes para a rigidez do sistema. Demais par?metros como carga normal aplicada, velocidade e dist?ncia de deslizamento foram mantidas constantes. Nesta investiga??o utilizou-se como corpos-de-prova dois pol?meros estruturais de engenharia de largo uso cotidiano, PTFE (politetrafluoretileno) e PEEK (poli-?ter-?ter-cetona) e o a?o liga AISI 4140 comocontracorpo. Caracterizou-se os materiais polim?ricos atrav?s de an?lises t?rmicas (termogravim?trica, calorimetria explorat?ria diferencial e din?mico-mec?nica), dureza e difra??o de raios-X. J? o met?lico foi submetido a ensaios de dureza, resist?ncia mec?nica e an?lise metalogr?fica. Durante os ensaios tribol?gicos eram coletadas as respostas de aquecimento com o aux?lio de termopares, al?m da velocidade global de vibra??o (VGV) e a acelera??o utilizando aceler?metros. Ap?s os ensaios, as superf?cies de desgaste dos corposde- prova foram analisadas utilizando um Microsc?pio Eletr?nico de Varredura (MEV) para an?lise morfol?gica e espectroscopia EDS para microan?lise, juntamente com a rugosidade do contracorpo, caracterizada antes e ap?s os ensaios tribol?gicos. Observou-se que as respostas tribol?gicas dos pol?meros foram diferentes e que eram fun??o de suas estruturas moleculares e capacidades de amortecimento distintas. Foram identificados mecanismos de desgaste predominantes em cada pol?mero. A VGV do PTFE foi menor que a do PEEK, na condi??o de m?nima rigidez e atribu?do ao maior coeficiente de perda daquele pol?mero. A taxa de desgaste do PTFE foi mais de uma ordem de grandeza maior que a do PEEK. Os resultados permitiram desenvolver uma correla??o entre a taxa de desgaste e o par?metro (E/ρ)1/2 (m?dulo de elasticidade, E, massa espec?fica, ρ), proporcional ? velocidade de propaga??o de uma onda el?stica longitudinal no material.
Bartsch, Ralf, Jens Sumpf, André Bergmann, and Marcus Bona. "Approach for Predicting the Friction Temperature between Thermoplastics in Dry-Running Sliding Friction with Periodically Recurring Contacts." Technische Universität Chemnitz, 2018. https://monarch.qucosa.de/id/qucosa%3A31813.
Повний текст джерелаHsu, Shu-Yao. "Fabrication of Well-Defined Architectures of Ultrahigh-Molecular-Weight Polymers by Living Radical Polymerization." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/215574.
Повний текст джерелаBergmann, André, Jens Sumpf, Ralf Bartsch, Sebastian Weise, Karsten Faust, and Rene Illek. "Tribologische Untersuchung und Beurteilung fördertechnisch relevanter polymerer Werkstoffe." Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-230868.
Повний текст джерелаDaloia, Debora. "Friction and Wear Behavior of Graphene Reinforced Epoxy." University of Dayton / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1403532384.
Повний текст джерелаGolchin, Arash. "Tribological behaviour of polymers in lubricated contacts." Licentiate thesis, Luleå tekniska universitet, Maskinelement, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25695.
Повний текст джерелаGodkänd; 2013; 20130410 (aragol); Tillkännagivande licentiatseminarium 2013-05-03 Nedanstående person kommer att hålla licentiatseminarium för avläggande av teknologie licentiatexamen. Namn: Arash Golchin Ämne: Maskinelement/Machine Elements Uppsats: Tribological Behaviour of Polymers in Lubricated Contacts Examinator: Professor Braham Prakash, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Diskutant: Professor Klaus Friedrich, Tech. Univ. of Kaiserslautern, Germany Tid: Fredag den 24 maj 2013 kl 09.30 Plats: E231, Luleå tekniska universitet
Bergmann, André, Jens Sumpf, Ralf Bartsch, Sebastian Weise, Karsten Faust, and Rene Illek. "Tribologische Untersuchung und Beurteilung fördertechnisch relevanter polymerer Werkstoffe: Tribologische Untersuchung und Beurteilungfördertechnisch relevanter polymerer Werkstoffe." Technische Universität Chemnitz, 2013. https://monarch.qucosa.de/id/qucosa%3A20825.
Повний текст джерелаSolouki, Bonab Vahab. "Polyurethane (PU) Nanocomposites; Interplay of Composition, Morphology, and Properties." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1542634359353501.
Повний текст джерелаBartsch, Ralf. "Erweiterung der Dimensionierungsgrundlagen für Gleitkettenfördersysteme." Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-229404.
Повний текст джерелаIn the course of the continuous enhancements of processing and packaging machines, higher demands are set on conveying technology used for transferring goods. In addition to an increased delivery rate, a lubricant-free operation as well as a hundred percent availability are claimed. Increasing performance leads to high stresses that can result to mechanical or thermal failure of plastic components in the conveying system, if incorrectly designed. While mechanical failure can be avoided with up to date dimensioning, there is no sufficiently precise dimensioning criterion in regard to thermal failure. The present thesis is concerning with the thermal analysis of sliding chain conveyor systems as well as the thermoplastic plastic-plastic sliding pairs used therein. In this regard, the sliding contacts of a sliding chain conveyor and their loads are analyzed. By abstraction of the chain–rail system, a semi-analytical model for estimating the frictional temperature is developed, which is verified by experimental studies on a tribo test bench and a conveyor system. From the study results, a thermal dimensioning criterion for plastic plastic pairings could be derived, which can be applied to sliding chain conveyor as well as perspectivly similar tribological systems
Bostan, Luciana Elena. "Matériaux polymères avec hydrophilie contrôlée. Applications en ingénierie tissulaire du cartilage articulaire." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00743464.
Повний текст джерелаChen, Yong Kang. "Tribology of polymers and composites in unlubricated rolling and sliding contact." Thesis, University of Birmingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.629939.
Повний текст джерелаVillavicencio, Rojas Maria Daniela. "Predictive modelling of the tribological behaviour of self-lubricating composite materials." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI040.
Повний текст джерелаIn self-lubricating composite materials, the generation of a stable third body layer is necessary to ensure contact lubrication. This is specially true for the contact in which these materials are directly involved, and also in other contacts implicating its counterface. Such type of lubrication is possible in self-lubricating bearings thanks to its cage material, which is made of the self-lubricating composite, while the rest of the bearing is usually made of AISI 440C. For space applications, RT/Duroid 5813 is a recognized self-lubricating composite cage material for this kind of bearings. This material has been widely used not only because of the space heritage, but also because it has satisfied the needs of space dry lubrication. However, the production of this material has been stopped in the 90’s, and it has placed the latter out of the market. This situation has led to the search for an equivalent material, that meets both the needs of the space market and the "tribological needs." Today, the main inconvenient related to these materials is the lack of predictability of their tribological behaviour. In this work, the "making of" a coupled numerical-experimental approach has been proposed in order to carry out the understanding of these materials. The goal of this numerical approach is to let to "complement" the limitations of a fully experimental or a fully numerical approach (the confined nature of the contact does not allow in situ observation). Such numerical approach has been informed with experimental test (as X-ray tomography for the creation of the numerical morphology, or atomic force microscopy to inform the value of adhesion between the components). Among all the self-lubricating materials, PGM-HT has been selected in this study because its coarse morphology let to build a numerical version of the material (with the resolution of the X-ray tomograph used in this work). Nevertheless, the approach that has been proposed here to build the numerical model, can be extended to other self-lubricating composite materials. The numerical model developed in this work opens new perspectives in terms of material design, as it makes it possible to directly study the scenarios of damage and wear of self-lubricating composite materials. From a general point of view, from this work it can be highlighted that numerical tribology is a tool that offers multiple possibilities in the understanding of self-lubricating materials, and that helps in the predictionof the tribological behaviour of self-lubricating materials. This work has then let to advance in the understanding of these materials
Oster, Frank. "Hochtemperaturbeständige Polymer-Beschichtungen für tribologische Anwendungen." Kaiserslautern Institut für Verbundwerkstoffe, 2005. http://bvbr.bib-bvb.de:8991/F?func=service&docl̲ibrary=BVB01&docn̲umber=013337632&linen̲umber=0001&funcc̲ode=DBR̲ECORDS&servicet̲ype=MEDIA.
Повний текст джерелаLima, Lonetá Lauro 1982. "Contribuição à fabricação e caracterização de hidrogéis de pHEMA com objetivo de produção de cartilagem artificial." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263527.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: A área de biomateriais tem crescido e desenvolvido tecnologias para acompanhar e suprir as demandas que tem surgido a cada dia na área médica. Os novos biomateriais são produtos versáteis que atuam, combatem ou reparam inúmeras limitações e patologias. Dentro da classe de biomateriais poliméricos os hidrogéis têm sido cada vez mais estudados devido as suas características serem adequadas para várias aplicações biomédicas, dentre elas a cartilagem articular. As tecnologias de fabricação também tem acompanhado o desenvolvimento dos biomateriais. A prototipagem rápida tem impulsionado as pesquisas na área biomédica e permitido a biofabricação de estruturas complexas que existe no corpo humano e de animais. A biofabricação integra os fundamentos da engenharia e o conhecimento da área biomédica para produzir dispositivos biocompatíveis que possam ser utilizados na área biomédica. Esse trabalho é um estudo para verificar a viabilidade de fabricar substratos de poli (metacrilato de 2-hidroxietila) (pHema) usando um equipamento desenvolvido pelo grupo de pesquisadores do INCT Biofabris da Unicamp. Esse equipamento de biofabricação utiliza os princípios da estereolitografia por irradiação direta com luz UV-Visível para fabricar dispositivos médicos Os substratos foram produzidos utilizando seis diferentes composições químicas, para verificar a influência da composição química nas propriedades mecânicas, biológicas e biotribológicas dos hidrogéis. Foi verificado que os substratos produzidos com maior densidade de reticulação promove maior proliferação celular
Abstract: The development of biomaterials area has grown and has developed technologies aimed to satisfy the demands that emerge every day in the medical field. New biomaterials are versatile products that act and repair numerous limitations and diseases. Within the class of polymeric biomaterials, hydrogels have been increasingly studied due to their characteristics that are suitable for various biomedical applications, such as articular cartilage. Manufacturing technologies have also followed the development of biomaterials. Rapid prototyping has driven research in the biomedical field and has allowed the biomanufacturing of complex structures that exist in the human and animals' body. The biomanufacturing integrates the fundamentals of engineering and biomedical knowledge to produce biocompatible devices that can be used in the biomedical field. This work is a study to verify the feasibility for fabrication of substrates of poly (2-hydroxyethyl methacrylate) (pHema) using an equipment developed by the research group of INCT Biofabris Unicamp. This equipment is based on the principle of stereolithography by direct irradiation with UV- visible light to fabricate medical devices. The substrates were produced using six different chemical compositions in order to verify the influence of the chemical composition on the mechanical properties, biological and biotribological properties of hydrogels. It was found that the substrate produced with higher crosslinking density promotes greater cell proliferation
Doutorado
Materiais e Processos de Fabricação
Doutora em Engenharia Mecânica
Rodrigues, Aline Alves. "Investigação das características tribológicas e ambientais de termoplásticos de engenharia especiais para uso em materiais de atrito." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-10012008-104113/.
Повний текст джерелаOrganic clutch friction facings are basicly composed of an organic matrix, fillers, solid lubricants and reinforcing fibers. An organic matrix has a structural function and has a large influence over the tribological properties of the system (coefficient of friction and wear rate in both, friction material as for the metal counterpart). Based on the automotive industry environmental standards, this analysis studies the viability of substituting the phenolic resin, used as the structural matrix in the clutch facing composition by high performance polymers. The principle objective for this substitution is to eliminate the free phenol in the final product and consequently produce a classified non-dangerous waste in accordance to the NBR 10004 norm. High performance polymers have high temperature working resistance when in continuous use and also maintain their mechanical properties and are normally used in products that support high pressures, such as gears, brakes, bearings and clutches. The influence of the sliding speed and the normal load under tribological behaviour was evaluated for phenolic composites (comparative basis) and for poly (amide imide) composites and poly (ether ether ketone) composites when these slip under dry conditions against a grey iron machined counterpart, the same material as used for pressure plates. Thermal and mechanical characteristics of the composites, obtained by thermogravimetric analysis, dynamic-mechanical and hardness were analysed. After the tribological tests the worn surfaces of the composites samples and of the metallic counterparts were evaluated with optical microscopy, electro scanning microscopy and chemical composition. The environmental characteristics of these materials classify both materials as not being dangerous, but under the sliding speed and load studied the PAI and PEEK composites showed lower wear resistance than the phenolic composites.
Hagg, Lobland Haley E. "Definition of Brittleness: Connections Between Mechanical and Tribological Properties of Polymers." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9097/.
Повний текст джерелаKurdi, Abdulaziz Adel H. "Developing high performance polymeric nano-composites for tribological applications." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/20504.
Повний текст джерелаTeixeira, Lucila Maria Rebello [UNESP]. "Avaliação do comportamento ao desgaste de compósitos poliméricos." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/99667.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Embora os materiais poliméricos têm sido empregados na indústria como alternativa na substituição de outros materiais, por apresentarem vantagens como redução de custo e peso do produto, ainda há questões que limitam a sua utilização. Uma das principais questões enfrentadas é o comportamento tribológico destes materiais. Este trabalho visa o estudo do comportamento tribológico de desgaste dops compósitos terroplásticos de engenharia: Poli (amida-imida) com fibra de carbono e PTFE, Poli (amida-imida) com grafite e PTFE, Poli (éter éter cetona) com fibra de carbono e PTFE, Poli (aril éter cetona) com fibra de carbono e de um polímero termofixo a base de resina fenólica, com fibra de vidro e carga mineral contra o aço à seco. Para a avaliação da resistência ao desgaste foi utilizado o método de esfera sobre a placa. A influência da carga aplicada e da distância de deslizamento foi avaliada. Esferas de aço SAE52100 (100Cr6) foram utilizadas como contra corpos. Antes dos ensaios a dureza, a densidade e as características térmicas dos compósitos poliméricos foram analisadas. Para avaliação do contra corpo metálico, foi realizado um ensaio metalográfico e medições de dureza. Após a elaboração dos corpos de prova, os valores de rugosidade foram obtidos para avaliar a padronização das superfícies. As dimensões das crateras após os ensaios de desgaste foram identificadas através de microcospia óptica. Os mecanismos de desgaste foram observados por meio de microscopia eletrônica de varredura e a composição química foi verificada após o ensaio tribológico por espectrometria de energia dispersiva. No geral, os resultados revelaram que os compósitos termoplásticos apresentaram melhor desempenho tribológico frente ao termofixo, com redução do volume desgastado de 60% a 99%, aproximadamente
While polymeric materials have been used in industry as an alternative for the substitution of other materials, because they have advantages such as cost and weight reduction of the product, there are issue that limit their use. One of the major issues facing is the tribological behavior of these materials. This dissertation aims to study the tribological behavior of engineering thermoplastics composites: Poly (amide-imide) with carbon fiber and PTFE, Poly (amide-imide) with graphite and PTFE, Polly (ether ether ketone) with carbon fiber and PTFE, Poly (aryl ether ketone) with carbon fiber and a thermosetting composite based on phenolic resin with glass fiber and mineral filler against steel in dry condition. To evaluate the wear resistance, the method used was the ball cratering. Tests were performed without the presence of lubricants. The influence of the applied load and the sliding distance was measured. In all essays steel balls of SAE52100 (100Cr6) were used as counter bodies. Before testing, the hardness, density and thermal characteristics of the polymeric composites were analyzed. For evaluate the metallic counter face, metallographic essay was carried out and hardness measurements were done. After the preparation of tests speciments the surface roughness were measured, to ensure standardization of the surfaces. The size of the craters made up with the wear tests were identified by optical microscopy. The wear mechanisms were observed by scanning electron microscopy and chemical composition was observed after the tribological test by energy dispersive spectrometry. Overall, the results revealed that thermoplastic composities showed 60% to 99%, approximately on the volume removed
Teixeira, Lucila Maria Rebello. "Avaliação do comportamento ao desgaste de compósitos poliméricos /." Bauru : [s.n.], 2012. http://hdl.handle.net/11449/99667.
Повний текст джерелаCoorientador: Sandro Donnini Mancini
Banca: Gilberto de Magalhães Bento Gonçalves
Banca: Carlos Alberto Fortulan
Resumo: Embora os materiais poliméricos têm sido empregados na indústria como alternativa na substituição de outros materiais, por apresentarem vantagens como redução de custo e peso do produto, ainda há questões que limitam a sua utilização. Uma das principais questões enfrentadas é o comportamento tribológico destes materiais. Este trabalho visa o estudo do comportamento tribológico de desgaste dops compósitos terroplásticos de engenharia: Poli (amida-imida) com fibra de carbono e PTFE, Poli (amida-imida) com grafite e PTFE, Poli (éter éter cetona) com fibra de carbono e PTFE, Poli (aril éter cetona) com fibra de carbono e de um polímero termofixo a base de resina fenólica, com fibra de vidro e carga mineral contra o aço à seco. Para a avaliação da resistência ao desgaste foi utilizado o método de esfera sobre a placa. A influência da carga aplicada e da distância de deslizamento foi avaliada. Esferas de aço SAE52100 (100Cr6) foram utilizadas como contra corpos. Antes dos ensaios a dureza, a densidade e as características térmicas dos compósitos poliméricos foram analisadas. Para avaliação do contra corpo metálico, foi realizado um ensaio metalográfico e medições de dureza. Após a elaboração dos corpos de prova, os valores de rugosidade foram obtidos para avaliar a padronização das superfícies. As dimensões das crateras após os ensaios de desgaste foram identificadas através de microcospia óptica. Os mecanismos de desgaste foram observados por meio de microscopia eletrônica de varredura e a composição química foi verificada após o ensaio tribológico por espectrometria de energia dispersiva. No geral, os resultados revelaram que os compósitos termoplásticos apresentaram melhor desempenho tribológico frente ao termofixo, com redução do volume desgastado de 60% a 99%, aproximadamente
Abstract: While polymeric materials have been used in industry as an alternative for the substitution of other materials, because they have advantages such as cost and weight reduction of the product, there are issue that limit their use. One of the major issues facing is the tribological behavior of these materials. This dissertation aims to study the tribological behavior of engineering thermoplastics composites: Poly (amide-imide) with carbon fiber and PTFE, Poly (amide-imide) with graphite and PTFE, Polly (ether ether ketone) with carbon fiber and PTFE, Poly (aryl ether ketone) with carbon fiber and a thermosetting composite based on phenolic resin with glass fiber and mineral filler against steel in dry condition. To evaluate the wear resistance, the method used was the ball cratering. Tests were performed without the presence of lubricants. The influence of the applied load and the sliding distance was measured. In all essays steel balls of SAE52100 (100Cr6) were used as counter bodies. Before testing, the hardness, density and thermal characteristics of the polymeric composites were analyzed. For evaluate the metallic counter face, metallographic essay was carried out and hardness measurements were done. After the preparation of tests speciments the surface roughness were measured, to ensure standardization of the surfaces. The size of the craters made up with the wear tests were identified by optical microscopy. The wear mechanisms were observed by scanning electron microscopy and chemical composition was observed after the tribological test by energy dispersive spectrometry. Overall, the results revealed that thermoplastic composities showed 60% to 99%, approximately on the volume removed
Mestre
Galuschko, André. "Molecular dynamics simulations of sheared polymer brushes." Strasbourg, 2010. https://publication-theses.unistra.fr/public/theses_doctorat/2010/GALUSCHKO_Andre_2010.pdf.
Повний текст джерелаShimizu, Yoshihiko. "Systematic Studies on Novel Polymeric Nanocomposites Embedded with a Well-Defined Fine Network." Kyoto University, 2019. http://hdl.handle.net/2433/242533.
Повний текст джерелаPalmeira, Belotti Luca. "Tribological Performance of Hygrothermally Aged UHMWPE Hybrid Composites." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70680.
Повний текст джерелаSouza, Jo~ao Henrique Corrêa de. "New design approaches for sheet metal forming dies using polymeric materials." [Frankfurt, M.] MAT-INFO, 2008. http://d-nb.info/994916590/04.
Повний текст джерелаNilsson, Rickard. "Optimization of pneumatic activity sensor : Development of a low friction seal." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-74540.
Повний текст джерелаDetta arbete behandlar utvecklingen av en ny sorts tätning samt arbetet som utförts för att nå en slutlig design. Resultaten presenteras i form av en CAD-modell tillsammans med materialval och förslag till fortsatta studier. Projektet utfördes efter förfrågan av konsultconcernen Projektengagemang AB i Karlstad, Sverige och utfördes som ett examensarbete för civilingenjörsexamen i maskinteknik vid Karlstads universitet. Detta gjordes eftersom det finns en efterfrågan på lågfriktionstätningar inom mikropneumatik där friktion är ett rådande problem. Arbetet består av en studie över att antal lågfriktionsmaterial där en komposit med 30/70 PTFE/PEEK valdes på grund av dess lovande nötnings- och friktionsegenskaper. Materialet implementerades sedan i design som togs fram genom en produktutvecklingsprocess. Resultatet är en prototyp för en ny sorts lågfriktionstätning som utnyttjar fluidtryck för att uppnå en tätande effekt mellan tätning och kolv vilket även var målsättningen för projektet. Flerfaktorförsök har under processen utnyttjats för att hitta vilka geometriska parametrar som påverkar kontaktkraften mellan tätning och motliggande yta. För att ta konceptet till en färdig produkt krävs fortsatt arbete innehållande experimentella materialtester, framtagning av en läckagemodell att optimera kontaktkraften mot, studier kring temperatur- och krypberoende samt fälttester för att verifiera funktionen över tid. Slutligen behöver ett verktyg för formsprutning tas fram tillsammans med eventuell ytterligare bearbetning för slutlig tillverkning av produkten.
Dorenge, Justine. "Etude du comportement d'additifs polymères épaississants dans les huiles moteur." Thesis, Le Mans, 2018. http://www.theses.fr/2018LEMA1012.
Повний текст джерелаThe reduction of car fuel consumption is one of the biggest concerns for oil companies. It involves the reduction of friction between moving parts through the formulation of lubricants.A lubricant is composed of base oil and several additives used to improve the properties of engine oils. Polymeric compounds are used to limit the decrease of viscosity with temperatures to efficiently protect the motor. This type of additives, called Viscosity Index Improver (VII), is based on the swelling of polymer chains with temperature. The most important parameter in the lubricant formulation is the viscosity and its dependance on temperature. The aim of the work was to study the influence of recently developed families of VII additives in different base oils in ordrer to select the most efficient type of polymer for engine lubricant uses, by understanding the molecular mechanisms responsible of the VII behavior. Various polyalkylmethacrylates were investigated to establishing the rheological properties of the solutions, namely as a function of temperature (dependence of intrinsic viscosity). For a given base oil, the efficiency of a VII varies with its chemical structure, its molecular weight and its concentration. Then, tribological properties were investigated using standard tests with the aim to obtain an overview of the lubricant's behavior under pressure. We also considered the degradation of this kind of polymers in a representative test in order to check the performance's durability. Degradation and tribological behaviors were rationalized in terms of volume occupied by polymer chains
Ghasemi, Hamid-Reza M. R. "Fundamental studies of the tribological behavior of thin polymeric coatings in fretting contact using infrared and photo/video techniques." Diss., Virginia Tech, 1992. http://hdl.handle.net/10919/39591.
Повний текст джерелаPh. D.
Guilleaume, Christina, Alexander Brosius, and Ali Mousavi. "Investigation of Alternative Polymer Composite Materials for Forming Applications." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-235022.
Повний текст джерелаThis paper presents the investigation of polymer concrete drawing tools for deep drawing operations. The goal of using polymer concrete as an alternative material is a rapid tooling process at relatively low initial tools costs that is suitable for small batch production. Similar concepts based on hydraulic concrete and polymer composites have shown that the surface tri-bology and consequently wear is the main limiting factor. Therefore, this paper focusses on the results of strip draw-bending tests with different polymer concrete mixtures. The friction coefficient is calculated and compared to a steel tool
Eichhorn, Sven, and Brit Clauß. "Charakterisierende Untersuchungen zum Reibungs- und Verschleißverhalten von WPC (Wood Polymer Composite)." Universitätsbibliothek Chemnitz, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200901840.
Повний текст джерелаSantana, Janaina Silva de. "Avalia??o tribol?gica dos pol?meros NBR, PTFE e PTFE gravitado em contato com a?o AISI 52100." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15591.
Повний текст джерелаCoordena??o de Aperfei?oamento de Pessoal de N?vel Superior
Low cost seals are made of NBR, Nitrile Butadiene Rubber, a family of unsaturated copolymers that is higher resistant to oils the more content of nitrile have in its composition, although lower its flexibility. In Petroleum Engineering, NBR seal wear can cause fluid leakage and environmental damages, promoting an increasing demand for academic knowledge about polymeric materials candidate to seals submitted to sliding contacts to metal surfaces. This investigation aimed to evaluate tribological responses of a commercial NBR, hardness 73 ? 5 Sh A, polytetrafluoroethylene (PTFE), hardness 60 ? 4 HRE and PTFE with graphite, 68 ? 6 HRE. The testings were performed on a sliding tribometer conceived to explore the tribological performance of stationary polymer plane coupons submitted to rotational cylinder contact surface of steel AISI 52100, 20 ? 1 HRC Hardness, under dry and lubricated (oil SAE 15W40) conditions. After screening testings, the normal load, relative velocity and sliding distance were 3.15 N, 0.8 m/s and 3.2 km, respectively. The temperatures were collected over distances of 3.0?0.5 mm and 750?50 mm far from the contact to evaluate the heating in this referential zone due to contact sliding friction by two thermocouples K type. The polymers were characterized through Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA). The wear mechanisms of the polymer surfaces were analyzed by Scanning Electron Microscopy (SEM) and EDS (Energy-Dispersive X-ray Spectroscopy). NBR referred to the higher values of heating, suggesting higher sliding friction. PTFE and PTFE with graphite showed lower heating, attributed to the delamination mechanism
Retentores de baixo custo s?o comercialmente dispon?veis de NBR, copol?meros insaturados de borrachas de nitrilo-butadieno que s?o mais resistentes aos ?leos quanto mais altos forem seus teores de nitrila, ? custa de uma menor flexibilidade. Em Engenharia de Petr?leo, o desgaste dos retentores de NBR causa vazamento de fluidos e danos ambientais, provocando uma crescente demanda de conhecimento acad?mico sobre materiais polim?ricos candidatos a retentor submetidos a contatos de deslizamento com superf?cies de metal. Este trabalho objetivou avaliar respostas tribol?gicas de tr?s pol?meros comercialmente dispon?veis, NBR, dureza 73 ? 5 Sh A, polytetrafluoroethylene (PTFE), dureza 60 ? 4 HRE e PTFE com grafite, 68 ? 6 HRE. Os ensaios foram realizados em um trib?metro de deslizamento concebido para explorar o desempenho tribol?gico de corpos-de-prova polim?ricos estacion?rios de superf?cie plana submetidos a um contato seco ou lubrificado (?leo SAE 15W40) de uma superf?cie rotativa cil?ndrica de a?o 52100, dureza 20 ? 1 HRC. A carga normal, a velocidade relativa e a dist?ncia de deslizamento foram, respectivamente, 3,15 N, 0,8 m/s e 3,2 km, determinadas ap?s ensaios explorat?rios iniciais. As temperaturas foram medidas por dois termopares tipo K a 3,0?0,5 mm e 750?50 mm de dist?ncia do contato para avaliar-se o aquecimento em uma mesma regi?o devido ao atrito de deslizamento no contato. Os pol?meros foram caracterizados atrav?s de An?lises Termogravim?tricas (TGA), Calorimetria Diferencial Explorat?ria (DSC) e An?lises Din?mico-Mec?nica (DMA). Os mecanismos de desgaste das superf?cies dos pol?meros foram analisados por Microscopia Eletr?nica de Varredura (MEV) e EDS (Espectroscopia por Energia Dispersiva de Raios-X). NBR apresentou os maiores valores de aquecimento, sugerindo maior atrito de deslizamento. PTFE e PTFE grafitado apresentaram um menor aquecimento, atribu?do ao mecanismo de desgaste por delamina??o
Pras, Maxime. "Influence de l’état de dispersion de nanotubes de carbone sur leur relargage et aérosolisation lors de la sollicitation tribologique de nanocomposites MWNT/polymère." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0020/document.
Повний текст джерелаCarbon nanotubes (CNT) reinforced polymer-based composites represent a significant opportunity in terms of mechanical reinforcement and electrical and thermal conductivity improvements. However specific issues for nanotubes and related composites on human health are still under studied. It is strongly expected that standards and regulations on carbon nanotubes and on carbon nanotubes composites should appear soon. Due to their high aspect ratio they could migrate into breathing apparatus (because of their small diameter) and remain stuck to the walls (due to their length) causing damages like pulmonary fibrosis or cancer. Exposition of human people to carbon nanotubes must be controlled and an occupational exposure limit must be defined. That is why suppliers of carbon nanotubes have large interest to predict rules in controlling carbon nanotube release during the use of materials prepared from nanotubes, especially under abrasion or other cyclic mechanical solicitations. A key point is to check if a good dispersion state is a required condition to decrease isolated carbon nanotubes release. As the dispersion state of carbon nanotubes in polymer-based nanocomposites was known and controlled, standardized abrasion tests were performed in a glove box in order to simulate the wear use of a nanocomposite during its lifecycle, i.e. to generate particles. Released particles were collected on TEM grids and by particle sizing devices and these ones were analyzed in term of number, size and nature thanks to different characterization methods. Granulometric data, TEM micrographs and EDX measurements were all performed and founded to be influenced by several parameters amongst which the carbon nanotubes dispersion state. Carbon nanotubes were found in the abraded particles but never isolated from other polymer particles but could be linked to released polymer particles via Van der Waals interactions and physical entanglement. It clearly appears that the dispersion state of CNT has an influence on the shape and the aspect of released particles
Eichhorn, Sven, and Christine Schubert. "Component analysis of a fully implemented sectional WPC-beam with tribologic value as sliding rail utilized in a overhead conveyor system." Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-153125.
Повний текст джерелаDas Tragprofil ist das zentrale Element in einem Hängefördersystem. Das Bauteil wird durch zeitlich veränderliche mechanische und tribologische Lasten beansprucht. Nachfolgend wird der Einfluss des Herstellungsprozesses auf die mechanischen Eigenschaften und die Gebrauchsfähigkeit eines extrudierten Trag- und Gleitprofils aus WPC im gewählten Anwendungsfall vorgestellt. Die notwendige Weiterentwicklung bestehender Rezepturen und Verarbeitungsverfahren wird aufgezeigt, um den Anwendungsbereich des Werkstoffes WPC vom Bereich Terassendielen auf den Maschinenbau zu erweitern
Chaveroux, Damien. "Relations structures-propriétés de polymères améliorants de viscosité dans les lubrifiants moteur." Thesis, Le Mans, 2015. http://www.theses.fr/2015LEMA1002.
Повний текст джерелаThe development of lubricants is a real challenge for the automotive and the petroleum industries to reduce the energy losses in engines due to frictions. The viscosity is the main parameter that the lubricant formulators can vary to reduce the frictions. This PhD deals with the role and mode of actions of viscosity modifier polymers (VM polymers) in lubricants.The purpose of this PhD is to correlate the study at the molecular scale with the macroscopic properties and the lubricant performances in order to orient the formulators towards one or several target molecules which could present the best properties.This work consisted in characterizing hydrogenated Poly-diene-styrene (P-diene-SH) and ethylene-propylene-copolymers (EPC).First, studies on the structure of VM polymers and on rheological properties of the solutions have shown the influence of the different chemical structures and polymer architectures on their rheological properties. This study was carried out on a large scale of temperatures (-20 à +135°C), shear rates (0 à 107s-1) and concentrations leading to characterizations under conditions corresponding to practical conditions.Secondly, these rheological properties were correlated with frictions coefficients and the film thickness in a sphere/plate contact in tribology.Finally, the ability of the polymer chains to break when a high shear rate was applied in a continuous or pulsed flow was studied and related to the chains configurations of the VM polymer and their structure.All these data were further used to propose a chemical structure and a polymer architecture leading to viscosity improved properties, a good resistance to degradation and a satisfactory behavior in tribology
Svensson, Erik, and Marcus Wiechert. "Abrasiv nötning av polymerer tillverkade genom 3D-skrivning." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-11124.
Повний текст джерелаVolvo Cars i Skövde tillverkar och monterar Volvomotorer. Vid monteringen av tändspolen till alla 4-cylindriga motorer behövs ett monteringsverktyg. Detta monteringsverktyg tillverkas för närvarande från formsprutad termoplast polyoximetylen (POM). Det har noterats att livslängden av verktyget förkortas på grund av abrasiv nötning som uppkommer under monteringsprocessen av tändspolen. Möjligheterna att tillverka monteringsverktyget med en 3D-skrivare utvärderas i samverkan med ÅF, en konsult till Volvo Cars. En litteraturstudie presenteras för att introducera en bredare kunskap i ämnet. Den abrasiva nötningen och materialegenskaper såsom draghållfasthet, tryckhållfasthet samt töjning hos POM och ett alternativt material för 3D-skrivning, Ultem™, en amorf termoplast polyeterimid, behandlas. Dessa materialegenskaper studeras vidare och tas i beaktning med både en teoretisk analys och ett nötningsexperiment, baserat på pin-on-disc metoden. Enligt den teoretiska analysen är nötningen hos Ultem™ approximativt 6 gånger större vid jämförelsen med POM. Nötningsbeständigheten hos Ultem™ är högst då nötning sker parallellt med 3D-skrivningsriktningen av lagren. Nötningsexperimenten visar att nötningen hos Ultem™ är ungefär 3 gånger större vid jämförelsen med POM. Den högsta draghållfastheten hos Ultem™ uppkommer också parallellt med 3D-skrivningsriktningen av lagren. Problem med den låga töjningen hos det 3D-skrivna materialet behandlas. ÅF rekommenderas att tillämpa 3D-skrivning med materialet Ultem™ främst för detaljer med komplexa geometrier med en töjning som inte överskrider 5 %. ÅF rekommenderas även att både stödja och bidra till denna innovativa teknik för att kunna skapa en ledande expertis i ämnet.