Relevant bibliographies by topics / Compositie materials

Academic literature on the topic 'Compositie materials'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Compositie materials.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Compositie materials"

1

van der Vlugt, Marloeke. "Tactiele compositie." FORUM+ 27, no. 2 (June 1, 2020): 33–42. http://dx.doi.org/10.5117/forum2020.2.005.vlug.

Full text
Abstract:
Abstract Marloeke van der Vlugt creëert sculpturale en ruimtelijke installaties die het publiek uitnodigen om te interacteren met lichamen, organismen, objecten en materialen op een niet-hiërarchische manier. Haar doel is om het bewustzijn van de wederkerige aard van ons in-de-wereld-zijn te vergroten. Ze deelt de visie van filosofe Jane Bennett wanneer die stelt dat alle materialiteiten een eigen vorm van agency en een dynamische relatie met hun omgeving hebben. Om dit open wereldbeeld te kunnen ervaren, gunnen haar installaties het publiek of de participanten de tijd en ruimte om events te verkennen, die ontstaan door de wederzijdse relatie tussen hun eigen lichaam en de andere materialiteiten. Ze maakt gebruik van strategieën zoals multisensoriële activering, ruimtelijke vormgeving of gegidste rondleiding, om het publiek of de participanten gevoelig te maken voor een wereld die bevolkt wordt door actieve, veranderlijke voorwerpen in plaats van passieve objecten.
APA, Harvard, Vancouver, ISO, and other styles
2

Khomenko, E. V., N. I. Grechanyuk, and V. Z. Zatovsky. "Modern composite materials for switching and welding equipment. information 1. powdered composite materials." Paton Welding Journal 2015, no. 10 (October 28, 2015): 36–42. http://dx.doi.org/10.15407/tpwj2015.10.06.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Jiménez-Morales, A., E. M. Ruiz-Navas, J. B. Fogagnolo, and J. M. Torralba. "Influencia de la composición y las condiciones de procesado en la resistencia a la corrosión de materiales compuestos base aluminio." Boletín de la Sociedad Española de Cerámica y Vidrio 43, no. 2 (April 30, 2004): 196–99. http://dx.doi.org/10.3989/cyv.2004.v43.i2.500.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Miravete, A. "Materiales compuestos en la construcción: Introducción." Materiales de Construcción 47, no. 247-248 (December 30, 1997): 5–9. http://dx.doi.org/10.3989/mc.1997.v47.i247-248.491.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Jiménez, M. A., L. Castejón, and A. Miravete. "Materiales compuestos realizados a partir de nuevas tecnologías textiles." Materiales de Construcción 47, no. 247-248 (December 30, 1997): 83–91. http://dx.doi.org/10.3989/mc.1997.v47.i247-248.497.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Paknahad, Elham, and Andrew P. Grosvenor. "Investigation of CeTi2O6- and CaZrTi2O7-containing glass–ceramic composite materials." Canadian Journal of Chemistry 95, no. 11 (November 2017): 1110–21. http://dx.doi.org/10.1139/cjc-2016-0633.

Full text
Abstract:
Glass–ceramic composite materials are being investigated for numerous applications (i.e., textile, energy storage, nuclear waste immobilization applications, etc.) due to the chemical durability and flexibility of these materials. Borosilicate and Fe–Al–borosilicate glass–ceramic composites containing brannerite (CeTi2O6) or zirconolite (CaZrTi2O7) crystallites were synthesized at different annealing temperatures. The objective of this study was to understand the interaction of brannerite or zirconolite-type crystallites within the glass matrix and to investigate how the local structure of these composite materials changed with changing synthesis conditions. Powder X-ray diffraction (XRD) and Backscattered electron (BSE) microprobe images have been used to study how the ceramic crystallites dispersed in the glass matrix. X-ray absorption near edge spectroscopy (XANES) spectra were also collected from all glass–ceramic composite materials. Examination of Ti K-, Ce L3-, Zr K-, Si L2,3-, Fe K-, and Al L2,3-edge XANES spectra from the glass–ceramic composites have shown that the annealing temperature, glass composition, and the loading of the ceramic crystallites in the glass matrix can affect the local environment of the glass–ceramic composite materials. A comparison of the glass–ceramic composites containing brannerite or zirconolite crystallites has shown that similar changes in the long range and local structure of these composite materials occur when the synthesis conditions to form these materials or the composition are changed.
APA, Harvard, Vancouver, ISO, and other styles
7

Platnieks, Oskars, Sergejs Gaidukovs, Anda Barkane, Gerda Gaidukova, Liga Grase, Vijay Kumar Thakur, Inese Filipova, Velta Fridrihsone, Marite Skute, and Marianna Laka. "Highly Loaded Cellulose/Poly (butylene succinate) Sustainable Composites for Woody-Like Advanced Materials Application." Molecules 25, no. 1 (December 28, 2019): 121. http://dx.doi.org/10.3390/molecules25010121.

Full text
Abstract:
We report the manufacturing and characterization of poly (butylene succinate) (PBS) and micro cellulose (MCC) woody-like composites. These composites can be applied as a sustainable woody-like composite alternative to conventional fossil polymer-based wood-plastic composites (WPC). The PBS/MCC composites were prepared by using a melt blending of 70 wt% of MCC processed from bleached softwood. MCC was modified to enhance dispersion and compatibility by way of carbodiimide (CDI), polyhydroxy amides (PHA), alkyl ester (EST), (3-Aminopropyl) trimethoxysilane (APTMS), maleic acid anhydride (MAH), and polymeric diphenylmethane diisocyanate (PMDI). The addition of filler into PBS led to a 4.5-fold improvement of Young’s modulus E for the MCC composite, in comparison to neat PBS. The 1.6-fold increase of E was obtained for CDI modified composition in comparison to the unmodified MCC composite. At room temperature, the storage modulus E′ was found to improve by almost 4-fold for the APTMS composite. The EST composite showed a pronounced enhancement in viscoelasticity properties due to the introduction of flexible long alkyl chains in comparison to other compositions. The glass transition temperature was directly affected by the composition and its value was −15 °C for PBS, −30 °C for EST, and −10 °C for MAH composites. FTIR indicated the generation of strong bonding between the polymer and cellulose components in the composite. Scanning electron microscopy analysis evidenced the agglomeration of the MCC in the PBS/MCC composites. PMDI, APTMS, and CDI composites were characterized by the uniform dispersion of MCC particles and a decrease of polymer crystallinity. MCC chemical modification induced the enhancement of the thermal stability of MCC composites.
APA, Harvard, Vancouver, ISO, and other styles
8

MELNYK, Liubov, Valentyn SVIDERSKYI, and Lev CHERNYAK. "FEATURES OF VOLCANIC ROCKS AS MATERIALS FOR POLYMERIC COPOSITES." Herald of Khmelnytskyi National University 305, no. 1 (February 23, 2022): 14–19. http://dx.doi.org/10.31891/2307-5732-2022-305-1-14-19.

Full text
Abstract:
Fillers or reinforcing components are an integral part of composite materials. A classification of composites according to structural features and fineness has been adopted. Ideas about the effect of fillers on the physical, mechanical and operational characteristics of composite materials and products have been defined and are constantly being deepened. In this regard, the use of volcanic rocks as fillers is noteworthy. The prospects for the use of certain types of volcanic rocks as disperse fillers of polymer composites are justified by their significant distribution and accumulation of fine fractions of screenings as waste during their extraction and processing. At the same time, the achievement of the effectiveness of such raw materials requires a deepening of ideas about the composition and physico-chemical properties, in the direction of which this work has been done. Physical and chemical studies in terms of evaluating the suitability of volcanic rocks (perlite, zeolite, andesite) as ingredients of polymer composite materials made it possible to obtain quantitative data on their chemical and mineralogical composition, hydrophilic-lyophilic balance and energy state of their surface. The interpretation of the obtained results concerning the potential interaction of the studied materials with polymeric binders is given taking into account the above features of their composition, structure and quantitative IR spectroscopy data in terms of structure-forming bonds Si–O–Si, S –O–Al, hydroxyl groups and adsorbed water. These features indicate the possibility of choosing volcanic rocks as fillers for polymer composites with the required lyophilic-lyophobic balance and energy state of their surface and providing an unlimited level of interaction with polymer binders as a factor in shaping the structure and properties of composites.
APA, Harvard, Vancouver, ISO, and other styles
9

Fakhrudi, Yoga Ahdiat, Kholis Nur Faidzin, and Rahayu Mekar Bisono. "Effect of Composite Composition on Mechanical Properties of Banana Fiber Composites with Epoxy Matrix for Functional Materials." International Journal of Science, Engineering and Information Technology 6, no. 2 (July 31, 2022): 303–6. http://dx.doi.org/10.21107/ijseit.v6i2.15804.

Full text
Abstract:
Technological developments and the influence of globalization have an impact on increasing the need for the amount of material for industry. The many disadvantages of metal materials due to their large mass, difficult manufacturing processes, corrosive properties, and high production costs have resulted in reduced use of metal materials in various products. Nowadays, there are many replacement materials with mechanical properties that can resemble metal materials such as composites. The role of composites is very important in the development of today's industrial world. This study wanted to determine the effect of the composite composition of rias banana fiber and teak sawdust with epoxy resin on the mechanical properties of the composite. The results showed that the comparison of the composition of the composite using rias banana fiber and teak sawdust with an epoxy matrix had an effect on the mechanical properties. Increasing the percentage of resin composition increases the value of the surface hardness of the composite. The highest level of Rockwell hardness with a value of 117 HRB in sample D and the lowest 109 HRB in sample A. While the highest max strength value was produced by sample C with a composition of teak sawdust: rias banana fiber: epoxy is 20% : 40% : 40 %. The conclusion of this research is the more resin composition will increase the composite hardness test value.
APA, Harvard, Vancouver, ISO, and other styles
10

Shishelova, Tamara I., Vadim V. Fedchishin, and Mikhail A. Khramovskih. "Study of Whiskers to be Used in Composite Materials." Solid State Phenomena 316 (April 2021): 51–55. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.51.

Full text
Abstract:
Rapid expansion of technologies poses higher requirements to structural materials and items made of them. Conventional materials are being replaced by composite materials (composites). Different additives enhancing the properties of initial materials are used as reinforcement fibers of composites. Utilization of micro-and nanosize particles for production of present-day materials is paid much attention to. Whiskers are among such materials. These crystals have high strength, high chemical and temperature resistance. But for rational utilization of whickers of different chemical composition in composite materials one should know their physical and chemical properties. Objectives of the paper: to study physical and chemical properties of whiskers in different compounds, their composition and structure; to prove experimentally the feasibility of utilizing whiskers as a reinforcement fiber of composite materials. Object of study: specimens of whiskers of silicon nitride (Si3N4), aluminum oxide (Al2O3), aluminum nitride (AlN), and mullite (Al6Si2O13). Methods of investigation: thermal study of specimens, study of mechanical properties and chemical strength, and IR-spectroscopy. Results of study: specimens of whiskers have been studied and their mechanical properties have been tabulated for comparison. Extensive thermal investigation was followed by deduction of regularities and identification of chemical properties of whiskers. IR-spectra of whiskers have been studied and conclusions on molecular composition and on presence of impurities in some whiskers have been made.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Compositie materials"

1

Kugler, Danielle. "Experimental investigation of the effect of changes in processing history on compositie laminates and cylinders /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Freitas, Ricardo Luiz Barros de [UNESP]. "Fabricação, caracterização e aplicações do compósito PZT/PVDF." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/100281.

Full text
Abstract:
Made available in DSpace on 2014-06-11T19:30:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-08-31Bitstream added on 2014-06-13T20:21:16Z : No. of bitstreams: 1 freitas_rlb_dr_ilha.pdf: 3147438 bytes, checksum: 01acb2a6a67b2e11009fd170fd595861 (MD5)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Um material compósito é constituído pela combinação de dois ou mais materiais, onde se procura sintetizar um novo material multifásico, e que abrigue as melhores características individuais de cada um de seus constituintes. Compósitos de polímeros (matriz) e ferroelétricos (inclusões) podem manifestar piezoeletricidade, ou seja, a produção de uma resposta elétrica devido a uma excitação mecânica, e vice-versa. Nesta tese o material polimérico usado para preparar os filmes ou lâminas de nanocompósitos é o PVDF, e, o material cerâmico é formado por nanopartículas de PZT. Ambos os materiais são dielétricos, porém, com características muito distintas (por exemplo, o PVDF tem aproximadamente 1/4 da densidade e 1/250 da constante dielétrica do PZT). O PZT é muito utilizado em transdutores, principalmente devido aos seus elevados coeficientes piezoelétricos, contudo, é quebradiço e sofre desgaste quando empregado na forma de filmes ou lâminas. Por outro lado, o PVDF é um polímero piezoelétrico que apresenta grande flexibilidade e excelentes resistências mecânica e química, porém, seus coeficientes piezoelétricos são apenas moderados. A fim de se aumentar a flexibilidade do PZT, mistura-se o pó cerâmico, na forma de nanopartículas, com o PVDF, também pulverizado. Na tese, evidencia-se que o compósito constituído por esta combinação cerâmica-polímero proporciona uma nova classe de materiais funcionais com grande potencial de aplicação, por terem combinadas a resistência e rigidez das cerâmicas, e, a elasticidade, flexibilidade, baixa densidade e elevada resistência a ruptura mecânica dos polímeros. O novo material tem grande resistência a choques mecânicos, flexibilidade, maleabilidade, e, principalmente, coeficientes piezoelétricos relativamente elevados. Amostras do compósito...
A composite material is constituted by the combination of two or more materials, which synthesizes a new multiphase material, and has the best individual characteristics of each of its constituents. Polymer composites (matrix) and ferroelectric (inclusions) can express piezoelectricity, i.e. the production of an electrical response due to a mechanical excitation, and vice versa. In this thesis the polymeric material used to prepare the films or slides of nanocomposites is the PVDF, and, ceramic material is formed by PZT nanoparticles. Both materials are dielectrics, however, with very different characteristics (for example, the PVDF is approximately 1/4 density and 1/250 relative permittivity from PZT). The PZT is widely used in transducers, mainly due to their high piezoelectric coefficients, however, is brittle and suffers wear and tear when employed in the form of films or slides. On the other hand, the PVDF is a piezoelectric polymer that offers great flexibility and excellent mechanical and chemical resistances, however, its piezoelectric coefficients are only moderate. In order to increase the flexibility of PZT, ceramic powder is mix, in the form of nanoparticles, with PVDF, also sprayed. In theory, it becomes evident that composite consisting of this ceramic- polymer combination delivers a new class of functional materials with great potential for application, because they combine the strength and rigidity of ceramics, and elasticity, flexibility, low density and high resistance to mechanical disruption of polymers. The new material has great resistance to mechanical shock, flexibility, suppleness, and, primarily, relatively high piezoelectric coefficients. PZT/PVDF composite samples were fabricated and characterized aiming to applications such as: piezoelectric actuators, acoustic emission detectors, and energy... (Complete abstract click electronic access below)
APA, Harvard, Vancouver, ISO, and other styles
3

Lorandi, Natália Pagnoncelli. "Estudo das propriedades dinâmico-mecânicas e fluência de compósitos epóxi/tecido não-dobrável de carbono produzidos por VARTM e RFI." reponame:Repositório Institucional da UCS, 2016. https://repositorio.ucs.br/handle/11338/1844.

Full text
Abstract:
A excelente relação custo-peso-desempenho de compósitos poliméricos em relação aos materiais tradicionais tornou-se motivo para o desenvolvimento de materiais avançados para aplicação estrutural, como compósitos epóxi/fibra de carbono, e com isso, novos métodos de processamento, diferentes resinas (matriz) e tecidos de fibras (reforço). Polímeros e seus compósitos apresentam comportamento viscoelástico, e fatores como estabilidade dimensional e resistência mecânica a longo prazo devem ser considerados quando utilizados na indústria aeronáutica. A análise dinâmico-mecânica (DMA) permite a avaliação das propriedades viscoelásticas do material, e ensaios de fluência possibilitam o estudo da deformação do material em função do tempo, sob tensão e temperatura constantes. Neste trabalho, compósitos epóxi/tecido não-dobrável (NCF) de carbono foram produzidos utilizando-se duas técnicas de fabricação: moldagem por transferência de resina com vácuo assistido (VARTM) e infusão de resina em filme (RFI), e uma análise comparativa entre os dois compósitos foi realizada. O módulo de armazenamento, E’, do compósito RFI foi aproximadamente 10 GPa maior ao longo da região vítrea e a Tonset aproximadamente 60°C mais alta em relação ao VARTM. O compósito RFI também apresentou uma região de transição vítrea mais larga (a partir da curva de tan δ). Esses resultados foram associados às relaxações moleculares e maior cooperatividade das cadeias, assim como maior rigidez do compósito RFI. Os ensaios de fluência foram realizados em três diferentes tensões e temperaturas, e o compósito VARTM apresentou maior deformação em função do tempo, indicando uma interface fibra/matriz mais fraca e um compósito menos rígido, e corroborando com os resultados de resistência ao cisalhamento interlaminar, a qual foi maior para o compósito RFI. Os modelos de Findley e de Burger foram aplicados e ambos ajustaram-se bem às curvas experimentais de fluência. Os parâmetros de cada modelo foram associados ao comportamento viscoelástico dos compósitos e relacionados com os demais resultados.
Submitted by Ana Guimarães Pereira (agpereir@ucs.br) on 2017-03-16T17:48:39Z No. of bitstreams: 1 Dissertacao Natalia Pagnoncelli Lorandi.pdf: 2042542 bytes, checksum: a231d9dd1acdbee5c47b2794a5af07be (MD5)
Made available in DSpace on 2017-03-16T17:48:39Z (GMT). No. of bitstreams: 1 Dissertacao Natalia Pagnoncelli Lorandi.pdf: 2042542 bytes, checksum: a231d9dd1acdbee5c47b2794a5af07be (MD5) Previous issue date: 2017-03-16
The excellent cost-weigh-performance relationship of polymeric composites compared to traditional materials became a reason to development of advanced materials for structural application such as carbon/epoxy composites, and with that, new processing methods, different resins (matrix) and fabrics (reinforcement) producing. Polymers and their composites present viscoelastic behavior, and so issues such as dimensional stability and long-term resistance must be taken into account when used by aeronautic industry. Dynamic-mechanical analysis (DMA) allows the evaluation of viscoelastic properties, and with creep tests, it is possible to study materials strain as function of time, under constant stress and temperature. In this study, epoxy/carbon NCF composites were manufactured by two techniques: vacuum assisted resin transfer molding (VARTM) and resin film infusion (RFI), and a comparative analysis between both composites was made. Storage modulus, E’, for RFI composite was approximately 10 GPa higher along the glassy region and Tonset approximately 60°C higher than VARTM composite. RFI composite also presented a wider glass transition region (form tan δ curve). These results were associated to the molecular relaxation and higher chain cooperative motion, and to the higher stiffness of RFI composite. Creep strain tests were performed in three different stress levels and temperatures, and VARTM composite presented larger creep strain with time, indicating a weaker interface fiber/matrix and a lower stiffness composite, and corroborating with short-beam shear resistance. Findley and Burger’s model were applied and both agreed well with experimental creep curves. Parameters of each model were associated to composites viscoelastic behavior and they were related to the other results.
APA, Harvard, Vancouver, ISO, and other styles
4

Karlsson, Johan. "Composite material in car hood : Investigation of possible sandwich materials." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-45633.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Palmer, Nathan Reed. "Smart Composites evaluation of embedded sensors in composite materials /." Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/palmer/PalmerN0809.pdf.

Full text
Abstract:
As an emerging form of renewable energy, horizontal wind turbines have experienced advancements in improving efficiency and reliability. These advances have pushed the limits of current technology used in wind turbines. Smart blades have been proposed as a method of addressing these limitations. Sensor integration within blade construction is the first step in development of smart blades. Thus, several low cost sensors were chosen, 1 axis strain gages, polyvinylidene fluoride films (PVDF), and single mode fiber optics either coated in acrylate or polyimide. To ensure successful bonding between sensor and composite two surface treatment techniques were developed. The first, dipping of the sensor into a bath of 20% by weight solution of nitric acid and the second was submersion of the sensor in the nitric acid for ten seconds prior to removal. These treatments were compared against sensors not surface treated prior to embedding. These sensors were embedded within samples created of fiberglass and epoxy or vinyl ester resin. Two different material tests were conducted. Tensile testing allowed for evaluation of sensor sensitivity, sensor failure point, material tensile modulus, and material tensile strength. Mode I fracture toughness evaluation, indicated the level of successful bonding which occurred during resin curing. Field Emission Scanning Electron Microscopy (FESEM) was conducted to further confirm the level of bonding between resin and sensor, post fracture. Results for embedded strain gages showed an adverse effect for vinyl ester samples. Epoxy samples fared better, thus concluding manufacturing success for epoxy samples, submersion being preferred, and alternative methods needed for vinyl ester samples. PVDF films had good qualitative FESEM images combined with increasing trends. It was concluded that integration for both resin groups with sensors submerged in nitric acid was successful. Fiber optics coated in acrylate also showed good bonding under FESEM imaging as well as testing. It was thus concluded that submersion was the preferred treatment. Lastly, fiber optics coated in polyimide embedded in vinyl ester composites showed significant drawbacks and it was concluded that alternative methods need exploration. Those embedded in epoxy were successfully integrated and submersion in nitric acid showed the most potential.
APA, Harvard, Vancouver, ISO, and other styles
6

Bovicelli, Federico. "On the influence of polymeric nanofibers in laminated composite materials. Studio dell'influenza di nanofibre polimeriche in materiali compositi laminati." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6784/.

Full text
Abstract:
During the last years an increased interest about the reinforcement of laminated composites by means of polymeric nanofibers has been growth. During this master-degree-thesis work, unidirectional and plane-textile composites have been interleaved with Nylon 6.6, PCL and mixed (Nylon 6.6+PCL) nanofibrous mats and the DCB (mode I interlaminar fracture toughness), ENF (mode II interlaminar fracture toughness and DMA (damping capability) tests have been performed. Regarding the interlaminar fracture toughness, marked increases have been recorded; while further investigation about damping capability is requested.
APA, Harvard, Vancouver, ISO, and other styles
7

Freitas, Ricardo Luiz Barros de. "Fabricação, caracterização e aplicações do compósito PZT/PVDF /." Ilha Solteira, [s.n.], 2012. http://hdl.handle.net/11449/100281.

Full text
Abstract:
Orientador: Aparecido Augusto de Carvalho
Coorientador: Antônio de Pádua Lima Filho
Banca: Cláudio Kitano
Banca: João Antonio Pereira
Banca: Adriano Rogério Bruno Tech
Resumo: Um material compósito é constituído pela combinação de dois ou mais materiais, onde se procura sintetizar um novo material multifásico, e que abrigue as melhores características individuais de cada um de seus constituintes. Compósitos de polímeros (matriz) e ferroelétricos (inclusões) podem manifestar piezoeletricidade, ou seja, a produção de uma resposta elétrica devido a uma excitação mecânica, e vice-versa. Nesta tese o material polimérico usado para preparar os filmes ou lâminas de nanocompósitos é o PVDF, e, o material cerâmico é formado por nanopartículas de PZT. Ambos os materiais são dielétricos, porém, com características muito distintas (por exemplo, o PVDF tem aproximadamente 1/4 da densidade e 1/250 da constante dielétrica do PZT). O PZT é muito utilizado em transdutores, principalmente devido aos seus elevados coeficientes piezoelétricos, contudo, é quebradiço e sofre desgaste quando empregado na forma de filmes ou lâminas. Por outro lado, o PVDF é um polímero piezoelétrico que apresenta grande flexibilidade e excelentes resistências mecânica e química, porém, seus coeficientes piezoelétricos são apenas moderados. A fim de se aumentar a flexibilidade do PZT, mistura-se o pó cerâmico, na forma de nanopartículas, com o PVDF, também pulverizado. Na tese, evidencia-se que o compósito constituído por esta combinação cerâmica-polímero proporciona uma nova classe de materiais funcionais com grande potencial de aplicação, por terem combinadas a resistência e rigidez das cerâmicas, e, a elasticidade, flexibilidade, baixa densidade e elevada resistência a ruptura mecânica dos polímeros. O novo material tem grande resistência a choques mecânicos, flexibilidade, maleabilidade, e, principalmente, coeficientes piezoelétricos relativamente elevados. Amostras do compósito... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: A composite material is constituted by the combination of two or more materials, which synthesizes a new multiphase material, and has the best individual characteristics of each of its constituents. Polymer composites (matrix) and ferroelectric (inclusions) can express piezoelectricity, i.e. the production of an electrical response due to a mechanical excitation, and vice versa. In this thesis the polymeric material used to prepare the films or slides of nanocomposites is the PVDF, and, ceramic material is formed by PZT nanoparticles. Both materials are dielectrics, however, with very different characteristics (for example, the PVDF is approximately 1/4 density and 1/250 relative permittivity from PZT). The PZT is widely used in transducers, mainly due to their high piezoelectric coefficients, however, is brittle and suffers wear and tear when employed in the form of films or slides. On the other hand, the PVDF is a piezoelectric polymer that offers great flexibility and excellent mechanical and chemical resistances, however, its piezoelectric coefficients are only moderate. In order to increase the flexibility of PZT, ceramic powder is mix, in the form of nanoparticles, with PVDF, also sprayed. In theory, it becomes evident that composite consisting of this ceramic- polymer combination delivers a new class of functional materials with great potential for application, because they combine the strength and rigidity of ceramics, and elasticity, flexibility, low density and high resistance to mechanical disruption of polymers. The new material has great resistance to mechanical shock, flexibility, suppleness, and, primarily, relatively high piezoelectric coefficients. PZT/PVDF composite samples were fabricated and characterized aiming to applications such as: piezoelectric actuators, acoustic emission detectors, and energy... (Complete abstract click electronic access below)
Doutor
APA, Harvard, Vancouver, ISO, and other styles
8

Podnos, Eugene Grigorievich. "Application of fictitious domain method to analysis of composite materials /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Yang, Heechun. "Modeling the processing science of thermoplastic composite tow prepreg materials." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/17217.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Conejo, Luíza dos Santos [UNESP]. "Obtenção e caracterização térmica de compósitos nanoestruturados de resina fenol-furfurílica/CNT." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/123107.

Full text
Abstract:
Made available in DSpace on 2015-05-14T16:52:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-02-06Bitstream added on 2015-05-14T16:59:44Z : No. of bitstreams: 1 000824684.pdf: 1722914 bytes, checksum: 2c784deea3baa14e38d63ec970e7a3bb (MD5)
As resinas fenólica e furfurílica possuem elevada densidade de ligações cruzadas e alto teor de carbono fixo, sendo, portanto, amplamente aplicadas na área aeroespacial, principalmente na obtenção de carbono vítreo. Apesar do domínio da produção de resinas fenol-furfurílica (FF) já se encontrar disponível em literatura, poucos dados a respeito de suas propriedades são publicados. Além disso, quase nenhuma informação pode ser encontrada a respeito da produção de compósitos nanoestruturados de resina fenol-furfurílica reforçada com nanotubos de carbono. Desta forma, o objetivo do presente trabalho é a obtenção de resina fenol-furfurílica e seus compósitos nanoestruturados com diferentes concentrações de nanotubos de carbono (0,1; 0,5 e 1,0 % m/m) e a caracterização térmica dos mesmos. Durante o desenvolvimento deste trabalho, as amostras foram avaliadas via calorimetria exploratória diferencial (DSC), visando obter informações a respeito do seu calor específico (cp); análise termomecânica (TMA) para obtenção do coeficiente de expansão térmica linear (α) e termogravimetria (TGA) para o conhecimento da temperatura de degradação térmica, tanto via análises reais como simuladas por software, conhecido como Highway Simulation. As análises de DSC mostram que os valores de cp tendem a aumentar com a temperatura até aproximadamente 150°C, a partir da qual tendem a decrescer. Além disso, a introdução dos CNT na resina FF aumenta o valor de cp até a concentração de 0,5%. O coeficiente de expansão térmica linear obtido pela técnica de TMA para a amostra de FF foi 33.10-6 °C-1. A introdução de CNT nas amostras de FF não afeta significativamente sua estabilidade térmica. Os valores encontrados de cp, α e temperatura inicial de degradação térmica para a resina FF são próximos aos valores da resina fenólica encontrados na literatura
Phenolic and furfuryl alcohol resins have a high density of cross-links and high carbon yield, and thus widely applied in the aerospace area, mainly in the vitreous carbon processing. The production of phenol-furfuryl alcohol resin (FF) is already available in the literature, however, few works report its properties. Furthermore, almost no information can be found regarding the production of nanostructured composites of FF/carbon nanotubes (CNT). In this way, the aim of this work is to obtain nanostructured composites of FF/CNT with different concentrations of carbon nanotubes (0.1, 0.5 and 1.0% w/w) and thermal characterization. The specimens were evaluated by differential scanning calorimetry (DSC), in order to obtain information regarding your specific heat (cp); thermo-mechanical analysis (TMA) for obtaining the linear thermal expansion coefficient (α) and thermogravimetry (TGA) to knowledge of the temperature of thermal degradation, either by actual analyses as simulated by software known as Highway Simulation. The DSC analysis shows that the samples studied show that cp values tend to increase with the increase of temperature up to 150°C. Furthermore, the introduction of the CNT in FF resin increases the value of cp up to a concentration of 0.5%. The coefficient of linear thermal expansion obtained by the TMA technique for sample FF was 33.10-6 °C-1. The introduction of the CNT samples FF does not affect its thermal stability. The values found in the analyses are close to the values of the phenolic resin in the literature
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Compositie materials"

1

Koohgilani, Mehran. Advanced composite materials: Composite material's history. Poole: Bournemouth University, 2001.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Sundarkrishnaa, K. L. Friction Material Composites: Materials Perspective. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Talreja, Ramesh. Fatigue of composite materials. Lyngby, Denmark: Technical University of Denmark, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Talreja, R. Fatigue of composite materials. Lancaster: Technomic Publishing, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

(Firm), Knovel, ed. Composite materials handbook: Metal matrix composites. [Washington, D.C.?]: U.S. Department of Defense, 2002.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

1944-, Michno Michael J., ed. Advanced composite materials. Berlin: New York, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Mechanics of composite materials. 2nd ed. Philadelphia, PA: Taylor & Francis, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Backman, B. F. (Bjorn F.). and ScienceDirect (Online service), eds. Composite structures: Safety management. 2nd ed. Oxford, UK: Elsevier, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Fatigue of composite materials. Lancaster: Technomic Pub. Co., 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Carbon-based solids and materials. London: ISTE, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Compositie materials"

1

Ambrosio, L., G. Carotenuto, and L. Nicolais. "Composite materials." In Handbook of Biomaterial Properties, 214–69. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5801-9_18.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Askeland, Donald R. "Composite Materials." In The Science and Engineering of Materials, 170–83. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0443-2_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Gatewood, B. E. "Composite materials." In Virtual Principles in Aircraft Structures, 582–610. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1165-9_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

John, Vernon. "Composite Materials." In Introduction to Engineering Materials, 295–302. London: Palgrave Macmillan UK, 1992. http://dx.doi.org/10.1007/978-1-349-21976-6_21.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Ramírez, Alejandro Manzano, and Enrique V. Barrera. "Composite Materials." In Synthesis and Properties of Advanced Materials, 149–94. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-6339-6_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Askeland, Donald R. "Composite Materials." In The Science and Engineering of Materials, 549–94. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4899-2895-5_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Biermann, Dirk. "Composite Materials." In CIRP Encyclopedia of Production Engineering, 1–5. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-642-35950-7_6396-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Jones, F. R. "Composite materials." In Chemistry and Technology of Epoxy Resins, 256–302. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2932-9_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Biermann, Dirk. "Composite Materials." In CIRP Encyclopedia of Production Engineering, 311–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-53120-4_6396.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Gdoutos, Emmanuel E. "Composite Materials." In Fracture Mechanics, 333–52. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-35098-7_11.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Compositie materials"

1

Allen, Emily A., Lee D. Taylor, and John P. Swensen. "Smart Material Composites for Discrete Stiffness Materials." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8203.

Full text
Abstract:
This paper presents an initial step towards a new class of soft robotics materials, where localized, geometric patterning of smart materials can exhibit discrete levels of stiffness through the combinations of smart materials used. This work is inspired by a variety of biological systems where actuation is accomplished by modulating the local stiffness in conjunction with muscle contractions. Whereas most biological systems use hydrostatic mechanisms to achieve stiffness variability, and many robotic systems have mimicked this mechanism, this work aims to use smart materials to achieve this stiffness variability. Here we present the compositing of the low melting point Field’s metal, shape memory alloy Nitinol, and a low melting point thermoplastic Polycaprolactone (PCL), composited in simple beam structure within silicone rubber. The comparison in bending stiffnesses at different temperatures, which reside between the activation temperatures of the composited smart materials demonstrates the ability to achieve discrete levels of stiffnesses within the soft robotic tissue.
APA, Harvard, Vancouver, ISO, and other styles
2

Abdel Hamid, Dalia, Amal Esawi, Inas Sami, and Randa Elsalawy. "Characterization of Nano- and Micro-Filled Resin Composites Used as Dental Restorative Materials." In ASME 2008 2nd Multifunctional Nanocomposites and Nanomaterials International Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/mn2008-47053.

Full text
Abstract:
Adhesively-bonded resin composites have the advantage of conserving sound tooth structure with the potential for tooth reinforcement, while at the same time providing an aesthetically acceptable restoration. However, no composite material has been able to meet both the functional needs of posterior restorations and the superior aesthetics required for anterior restoration. In an attempt to develop a dental resin composite that had the mechanical strength of hybrid composite materials and the superior polish and gloss retention associated with microfilled materials, nanofilled resin composites have been introduced in the market. Although nanofillers are the most popular fillers utilized in current visible light-activated dental resin composites and are claimed to be the solution for the most challenging material limitations as a universal restorative material, the mechanisms by which these fillers influence the resin composite properties are not well explained. In this study, some physical and mechanical properties of a nanofilled resin composite containing 60 vol. % zirconia and silica fillers were evaluated and compared to those of a microhybrid resin composite of the same composition. The nanofilled resin composite was found to have equivalent polymerization shrinkage and depth of cure to the microhybrid material but a slightly lower degree of conversion and density. Regarding mechanical behaviour, although the nanocomposite was found to exhibit significantly higher wear resistance, and equivalent flexural strength, its indentation modulus and nanohardness were slightly lower. Field-emission scanning electron microscopy (FE-SEM) analysis was conducted in order to evaluate the microstructure and to obtain a better understanding of the effect of the nanofillers on the behaviour of the nanocomposite.
APA, Harvard, Vancouver, ISO, and other styles
3

PAYNE, NICHOLAS, and KISHORE POCHIRAJU. "A Methodology for Characterization of Material Constants for Strain-locking Materials." In American Society for Composites 2017. Lancaster, PA: DEStech Publications, Inc., 2017. http://dx.doi.org/10.12783/asc2017/15383.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

NELSON, JARED W., RONALD B. BUCINELL, and DANIEL WALCZYK. "Bio-Industrial Materials Institute: Characterization of Natural Fiber Material Property Variability." In American Society for Composites 2019. Lancaster, PA: DEStech Publications, Inc., 2019. http://dx.doi.org/10.12783/asc34/31325.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Nakai-Chapman, J., Y. H. Park, and J. Sakai. "Progressive Fatigue Life Prediction of Composite Materials Based on Residual Material Property Degradation Model." In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21595.

Full text
Abstract:
Abstract Anisotropic composite materials have been extensively utilized in mechanical, automotive, aerospace and other engineering areas due to high strength-to-weight ratio, superb corrosion resistance, and exceptional thermal performance. As the use of composite materials increases, determination of material properties, mechanical analysis and failure of the structure become important for the design of composite structure. In particular, the fatigue failure is important to ensure that structures can survive in harsh environmental conditions. The non-homogeneous character of composites induces diverse failure modes of the constituent including fiber fracture, matrix cracking, fiber-matrix interface failure, and delamination. Non-homogeneity of composite materials makes their fatigue behavior very complex in comparison with traditional engineering materials. In this study, a progressive damage theory is extended to simulate fatigue failure of composite laminates under fatigue loading conditions. A residual material property degradation model was employed to predict fatigue damage due to arbitrary stress ratio without performing excessive quantities of testing. This generalized residual material property degradation rule is implemented into user subroutine USDFLD in ABAQUS through which material degradation states are updated over the progressive fatigue loading. The present computational method is verified by comparing the simulated results with the experimental data available in the literature.
APA, Harvard, Vancouver, ISO, and other styles
6

Rasdorf, William J., and Lisa K. Spainhour. "Developing and Implementing a Conceptual Composite Materials Design Database." In ASME 1993 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/edm1993-0109.

Full text
Abstract:
Abstract Researchers and materials engineers require a greater understanding of the problems and solutions that emerge when integrating composite materials data with computer technology so that utilitarian composite materials databases can be developed to effectively and efficiently support analysis and design software. Composite materials constitute a representational challenge due to their composition and use. However, this paper suggests that a conceptual composite material data model and application software interfaces must be developed to support the dissemination and use of composite materials data. This paper primarily serves to analyze several of the problems facing developers of composite materials databases, evolving from the complexity of the materials themselves and from the current lack of testing and data representation standards. Without a clear understanding of the scope and nature of these problems, there is no possibility of designing concise yet comprehensive composites data models, yet we feel that such an understanding is presently lacking. In addition, an effort is made to present possible solutions to these difficulties being suggested and/or implemented both by the authors and by other researchers in the field. Such an effort provides a firm foundation upon which future research may be based.
APA, Harvard, Vancouver, ISO, and other styles
7

Reifsnider, Ken, and S. W. Case. "Life Prediction Based on Material State Changes in Ceramic Matrix Composite Materials." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-28167.

Full text
Abstract:
Monolithic ceramics and continuous fiber reinforced ceramic composites are being developed for use in high temperature applications such as combustor liners in gas turbines, thrust deflectors for jet engines, and thruster nozzles. Ceramic composite materials possess the high temperature resistance properties of ceramics, but have better creep and cyclic properties. However, the properties of these materials change somewhat with time at service temperatures, i.e., their material state changes as a function of service conditions and history. The authors have developed a methodology for representing and combining the effects of high temperature material state changes in CMCs, along with changes in applied stress / strain conditions during service, to estimate remaining strength and life of ceramic composite materials and components. Fatigue, creep rupture, and time dependent deformation are combined by a strength metric in integral form to create a time-resolved, point-wise estimate of current remaining strength and life in material elements. Application of this methodology in discrete element representations of mechanical behavior of structural elements with nonuniform stress / strain states has been implemented.
APA, Harvard, Vancouver, ISO, and other styles
8

Kosaraju, Satyanarayana, Venu Gopal Anne, and Swapnil Gosavi. "Development of Hybrid Composites (Al-SiC-C) Through Stir Casting: Machinability Studies." In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-2659.

Full text
Abstract:
Composite materials are important engineering materials due to their outstanding mechanical properties. Composite materials offer superior properties to conventional alloys for various applications as they have high stiffness, strength and wear resistance. The high cost and difficulty of processing these composites restricted their application and led to the development of reinforced composites. In the last two decades, wear studies on Particulate Metal Matrix Composites (PMMCs) reinforced with various reinforcements ranging from very soft materials like graphite, talc etc., to high hardened ceramic particulates like SiCp, Al2O3 etc., have been reported to be superior to their respective unreinforced alloys. Therefore, present work focused on the study of machinability of Al based binary composites reinforced with 8.5% SiC and Al based Hybrid composite reinforced with 8.5% SiC, 2% and 4% Graphite powder (Solid lubricant) have been studied by considering the effect of process parameters such as speed, feed, depth of cut and composition of material. Binary and hybrid composite materials have been casted by stir casting methodology. Experiments have been conducted using Design of Experiments approach to reduce the number of experiments and time. The cutting force and surface roughness in turning of both the binary and hybrid materials have been measured using cutting force dynamometer (4 component kistler dynamometer) and the roughness has been measured using surface roughness tester (Marsurf M400) simultaneously. The multi objective optimization has been carried out using Grey relational based Taguchi method. It was observed that feed was the most influencing factor compared to others factors and also results shown that the performance characteristics cutting force and the surface roughness are greatly enhanced by using Grey relational Analysis.
APA, Harvard, Vancouver, ISO, and other styles
9

Alhummidy G. Almotery, Khaled, Waleed Saeed M. Alsaiari, Yazeed Abdulrahman Y. Alyoussef, Mohammad Farraj M. Alsahli, Meshal Mohammed O. Alharbi, Tarek M. A. A. El-Bagory, and Ibrahim M. Alarifi. "Fabrication and Characterization of the Recycling of Composite Palm Materials, Shell, Leaves and Branches in Saudi Arabia." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10308.

Full text
Abstract:
Abstract Palm wood can be classified into three categories: leaves, branches and core-shell, and all of these were studied. Recycled composite materials are promising in the innovation field since some microstructures have unique characterization and noble applications. The micro mill used grinded the recycled materials into micro size particles approximately 20μm. SEM + EDX spectroscopy was used to analyze and indicate the morphology of the micro particle composite material’s composition content. The SEM results demonstrate the composite homogeneity. XRD analysis was conducted and showed the structural properties of the recycled composite materials examined. The recycled material was transferred into micro size particles encased by the properties of resin mixed with epoxy, this led to promising composite materials. FITR spectroscopy analysis revealed a distinct interaction between the polymer chain and the band positions. The mechanical analysis was conducted based on the recycled materials’ application. The mechanical properties were observed during the tests and reflected in the structure of the material and its uses. This project aimed to determine the possibility of efficiently recycling composite. The significant increase in demand around the world, and the increased use of composite materials in different industries, has consequently led to positive results for the production waste.
APA, Harvard, Vancouver, ISO, and other styles
10

Razavi Setvati, Mahdi, Zahiraniza Mustaffa, Nasir Shafiq, and Zubair Imam Syed. "A Review on Composite Materials for Offshore Structures." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23542.

Full text
Abstract:
Research into advanced composite materials for offshore structures is growing due to factors such as new challenges in extreme environments, contaminated contexts (chemical, biological) and increasing awareness of earthquake risks. Advances in theory and practice of composites technology have modified the general perception of offshore structures. This paper provided an introduction to composite material and reviewed the application of composites in offshore structures. This survey focused on (1) composites, especially FRP, for repairing offshore structures and also (2) fire protection of composites in offshore structures. Various national and international research projects on uses of composites for marine structures either ongoing or completed during last decades summarized. Future environmental issues considered and eco-friendly sustainable composite suggested and forecasted for new generation of offshore structures.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Compositie materials"

1

McCullough, Roy L., and Diane S. Kukich. Composites 2000: An International Symposium on Composite Materials. Fort Belvoir, VA: Defense Technical Information Center, June 2000. http://dx.doi.org/10.21236/ada384778.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Barnes, Eftihia, Jennifer Jefcoat, Erik Alberts, Hannah Peel, L. Mimum, J, Buchanan, Xin Guan, et al. Synthesis and characterization of biological nanomaterial/poly(vinylidene fluoride) composites. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/42132.

Full text
Abstract:
The properties of composite materials are strongly influenced by both the physical and chemical properties of their individual constituents, as well as the interactions between them. For nanocomposites, the incorporation of nano-sized dopants inside a host material matrix can lead to significant improvements in mechanical strength, toughness, thermal or electrical conductivity, etc. In this work, the effect of cellulose nanofibrils on the structure and mechanical properties of cellulose nanofibril poly(vinylidene fluoride) (PVDF) composite films was investigated. Cellulose is one of the most abundant organic polymers with superior mechanical properties and readily functionalized surfaces. Under the current processing conditions, cellulose nanofibrils, as-received and 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) oxidized, alter the crystallinity and mechanical properties of the composite films while not inducing a crystalline phase transformation on the 𝛾 phase PVDF composites. Composite films obtained from hydrated cellulose nanofibrils remain in a majority 𝛾 phase, but also exhibit a small, yet detectable fraction of 𝛼 and ß PVDF phases.
APA, Harvard, Vancouver, ISO, and other styles
3

Thornell, Travis, Charles Weiss, Sarah Williams, Jennifer Jefcoat, Zackery McClelland, Todd Rushing, and Robert Moser. Magnetorheological composite materials (MRCMs) for instant and adaptable structural control. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38721.

Full text
Abstract:
Magnetic responsive materials can be used in a variety of applications. For structural applications, the ability to create tunable moduli from relatively soft materials with applied electromagnetic stimuli can be advantageous for light-weight protection. This study investigated magnetorheological composite materials involving carbonyl iron particles (CIP) embedded into two different systems. The first material system was a model cementitious system of CIP and kaolinite clay dispersed in mineral oil. The magnetorheological behaviors were investigated by using parallel plates with an attached magnetic accessory to evaluate deformations up to 1 T. The yield stress of these slurries was measured by using rotational and oscillatory experiments and was found to be controllable based on CIP loading and magnetic field strength with yield stresses ranging from 10 to 104 Pa. The second material system utilized a polystyrene-butadiene rubber solvent-cast films with CIP embedded. The flexible matrix can stiffen and become rigid when an external field is applied. For CIP loadings of 8% and 17% vol %, the storage modulus response for each loading stiffened by 22% and 74%, respectively.
APA, Harvard, Vancouver, ISO, and other styles
4

Lee, Max. Composite Materials. Fort Belvoir, VA: Defense Technical Information Center, September 1996. http://dx.doi.org/10.21236/ada316048.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Mandell, J. F., and D. D. Samborsky. DOE/MSU composite material fatigue database: Test methods, materials, and analysis. Office of Scientific and Technical Information (OSTI), December 1997. http://dx.doi.org/10.2172/578635.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kennedy, Alan, Mark Ballentine, Andrew McQueen, Christopher Griggs, Arit Das, and Michael Bortner. Environmental applications of 3D printing polymer composites for dredging operations. Engineer Research and Development Center (U.S.), January 2021. http://dx.doi.org/10.21079/11681/39341.

Full text
Abstract:
This Dredging Operations Environmental Research (DOER) technical note disseminates novel methods to monitor and reduce contaminant mobility and bioavailability in water, sediments, and soils. These method advancements are enabled by additive manufacturing (i.e., three-dimensional [3D] printing) to deploy and retrieve materials that adsorb contaminants that are traditionally applied as unbound powders. Examples of sorbents added as amendments for remediation of contaminated sediments include activated carbon, biochar, biopolymers, zeolite, and sand caps. Figure 1 provides examples of sorbent and photocatalytic particles successfully compounded and 3D printed using polylactic acid as a binder. Additional adsorptive materials may be applicable and photocatalytic materials (Friedmann et al. 2019) may be applied to degrade contaminants of concern into less hazardous forms. This technical note further describes opportunities for U.S. Army Corps of Engineers (USACE) project managers and the water and sediment resource management community to apply 3D printing of polymers containing adsorptive filler materials as a prototyping tool and as an on-site, on-demand manufacturing capability to remediate and monitor contaminants in the environment. This research was funded by DOER project 19-13, titled “3D Printed Design for Remediation and Monitoring of Dredged Material.”
APA, Harvard, Vancouver, ISO, and other styles
7

Wadley, H. N. G., J. A. Simmons, R. B. Clough, F. Biancaniello, E. Drescher-Krasicka, M. Rosen, T. Hsieh, and K. Hirschman. Composite materials interface characterization. Gaithersburg, MD: National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nbs.ir.87-3630.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Spangler, Lee. Composite Materials for Optical Limiting. Fort Belvoir, VA: Defense Technical Information Center, April 2001. http://dx.doi.org/10.21236/ada396124.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Magness, F. H. Joining of polymer composite materials. Office of Scientific and Technical Information (OSTI), November 1990. http://dx.doi.org/10.2172/6334940.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Anderson, D. P., and B. P. Rice. Intrinsically Survivable Structural Composite Materials. Fort Belvoir, VA: Defense Technical Information Center, April 2000. http://dx.doi.org/10.21236/ada387309.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Compositie materials' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography