Relevant bibliographies by topics / Polymeric composites – Creep

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Polymeric composites – Creep'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Polymeric composites – Creep"

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Hu, H.-W. "Master Curve of Creep in Polymeric Off-Axis Composite Laminates." Journal of Mechanics 22, no. 3 (2006): 229–34. http://dx.doi.org/10.1017/s1727719100000873.

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AbstractAn approach to establish a master curve for effective creep compliances of polymeric off-axis composites with various fiber orientations was presented. Carbon/epoxy composite IM7/977–3 was used to fabricate four types of off-axis specimens and then subjected to momentary creep tests after a period of initial aging. Creep compliance and elastic compliance were separated from the total compliance. Using one-parameter creep potential theory, creep compliances were transformed to effective creep compliances. After choosing a proper value for the one-parameter, all effective creep compliances with various off-axis fiber orientations were superposed into a master curve. This master curve enables us to obtain creep compliance with any off-axis fiber orientation by testing only one off-axis specimen.
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Upadhyay, P. C., and A. Mishra. "Parametric Modeling of Moisture Assisted Creep in Polymeric Composites." Journal of Reinforced Plastics and Composites 13, no. 12 (1994): 1056–70. http://dx.doi.org/10.1177/073168449401301201.

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Biswas, Bhabatosh, Biplab Hazra, Nillohit Mukherjee, and Arijit Sinha. "Nanomechanical behaviour of ZrO2 dispersed sisal-based polymeric composites." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 235, no. 8 (2021): 1841–49. http://dx.doi.org/10.1177/14644207211016015.

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Alkali-treated sisal fibre-incorporated silanized ZrO2 dispersed unsaturated polyester composites were fabricated with a filler loading of 5, 15, 25, 35, 45 wt%, respectively. The mechanical characterization of the composites was suitably executed at the sub-micron scale using the nanoindentation technique. Various mechanical properties were derived from the standard nanoindentation measurements namely, nanohardness, reduced modulus, recovery index, residual depth, wear rate and indentation creep, respectively. A marked improvement in the mechanical properties of the unsaturated polyester matrix due to the incorporation of the fillers (sisal and/or ZrO2) was observed through indentation-derived parameters namely, nanohardness (∼186%), reduced modulus (∼175%), recovery index (∼62%), wear rate (∼63%) and indentation creep (∼33%), respectively. A simulated dynamic mechanical analysis was performed using the sinus mode of the nanoindentation technique. A similar enhancement in the dynamic mechanical properties of the matrix was further observed through dynamic mechanical analysis as storage modulus (∼71%), loss modulus (∼60%), loss factor (∼150%) and specific damping coefficient (∼200%), respectively.
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Monfared, Vahid, Mehdi Mondali, and Ali Abedian. "Steady-state creep analysis of polymer matrix composites using complex variable method." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 227, no. 10 (2013): 2182–94. http://dx.doi.org/10.1177/0954406212473391.

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A new analytical formulation is presented to study the steady-state creep in short fiber composites using complex variable method. In this new approach, both the fiber and matrix creep at low stresses and temperatures. To analyze the crept fiber, a plane stress model was used. Important novelties of the present analytical method are determination of displacement rates with proper boundary conditions in the crept fibers and also using the complex variable method in creep analyzing. It is noteworthy that the method can be useful to study the creep behavior in polymeric matrix composites due to their high capability of creep. Moreover, another significant application of the present method is to study on the creep or elastic behavior of carbon nanotube polymer composites. Finally, the results obtained from the present analytical method (complex variable method) show a good agreement with the existing experimental results.
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Rafiee, Roham, and Behzad Mazhari. "Modeling creep in polymeric composites: Developing a general integrated procedure." International Journal of Mechanical Sciences 99 (August 2015): 112–20. http://dx.doi.org/10.1016/j.ijmecsci.2015.05.011.

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Monfared, Vahid, Hamid Reza Bakhsheshi-Rad, Seeram Ramakrishna, Mahmood Razzaghi, and Filippo Berto. "A Brief Review on Additive Manufacturing of Polymeric Composites and Nanocomposites." Micromachines 12, no. 6 (2021): 704. http://dx.doi.org/10.3390/mi12060704.

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In this research article, a mini-review study is performed on the additive manufacturing (AM) of the polymeric matrix composites (PMCs) and nanocomposites. In this regard, some methods for manufacturing and important and applied results are briefly introduced and presented. AM of polymeric matrix composites and nanocomposites has attracted great attention and is emerging as it can make extensively customized parts with appreciably modified and improved mechanical properties compared to the unreinforced polymer materials. However, some matters must be addressed containing reduced bonding of reinforcement and matrix, the slip between reinforcement and matrix, lower creep strength, void configurations, high-speed crack propagation, obstruction because of filler inclusion, enhanced curing time, simulation and modeling, and the cost of manufacturing. In this review, some selected and significant results regarding AM or three-dimensional (3D) printing of polymeric matrix composites and nanocomposites are summarized and discuss. In addition, this article discusses the difficulties in preparing composite feedstock filaments and printing issues with nanocomposites and short and continuous fiber composites. It is discussed how to print various thermoplastic composites ranging from amorphous to crystalline polymers. In addition, the analytical and numerical models used for simulating AM, including the Fused deposition modeling (FDM) printing process and estimating the mechanical properties of printed parts, are explained in detail. Particle, fiber, and nanomaterial-reinforced polymer composites are highlighted for their performance. Finally, key limitations are identified in order to stimulate further 3D printing research in the future.
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Lin, Congmei, Jiahui Liu, Guansong He, et al. "Non-linear viscoelastic properties of TATB-based polymer bonded explosives modified by a neutral polymeric bonding agent." RSC Advances 5, no. 45 (2015): 35811–20. http://dx.doi.org/10.1039/c5ra05824d.

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Pereira, Ayrton Alef Castanheira, José Roberto Moraes d'Almeida, and Thiago Motta Linhares Castro. "Evaluation of Short-term Creep Behavior of PE-HD after Aging in Oil Derivatives." Polymers and Polymer Composites 26, no. 3 (2018): 243–50. http://dx.doi.org/10.1177/096739111802600304.

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The creep behavior of a high density polyethylene (PE-HD) was evaluated before and after aging in contact with gasoline and diesel oil. Four viscoelastic models were used to assess changes in creep properties of the material: three parameters model, four parameters model, stretched Burgers model and Findley Law. Viscoelastic properties, stationary creep rate and compliance were used to analyze and compare the behavior between samples. A strain increase could be seen in aged samples in comparison with as-received ones, caused by plasticization due to aging effects. An increase in flexibility and decrease in stiffness in aged samples was also noted. This work also shows that the effects of aging on the creep response of a polymeric material can be analyzed using short term creep tests.
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Scott, David W., James S. Lai, and Abdul-Hamid Zureick. "Creep Behavior of Fiber-Reinforced Polymeric Composites: A Review of the Technical Literature." Journal of Reinforced Plastics and Composites 14, no. 6 (1995): 588–617. http://dx.doi.org/10.1177/073168449501400603.

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Khalifah, Khalid Mohammed. "The Effect of Creep Rate on Polymeric Composites Reinforced by Nanoclays and their Comparison." International Journal of Nanoscience 20, no. 03 (2021): 2150027. http://dx.doi.org/10.1142/s0219581x21500277.

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The aim of this study is to prepare composite nanomaterials and to improve some of their mechanical properties as a creep rate using nanoparticles that are prepared in the laboratory by ultrasound available using Impact Polystyrene (HIPS) and Polyethylene (HDPE) as matrix materials. Nanoclays are made of Bentonite-reinforced materials. This research studies the addition of nanoclays with thermos plastic polymers in weight fraction percentage (1%, 2%, 3% and 4%) and makes a comparison among them.
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Dissertations / Theses on the topic "Polymeric composites – Creep"

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Batra, Saurabh. "Creep rupture and life prediction of polymer composites." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10381.

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Thesis (M.S.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains xix, 195 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 193-195).
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Wright, Richard J. "Bolt bearing creep behavior of highly loaded polymer matrix composites at elevated temperatures." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/17362.

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Ranade, Ajit. "Barrier and Long Term Creep Properties of Polymer Nanocomposites." Thesis, University of North Texas, 2004. https://digital.library.unt.edu/ark:/67531/metadc5563/.

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The barrier properties and long term strength retention of polymers are of significant importance in a number of applications. Enhanced lifetime food packaging, substrates for OLED based flexible displays and long duration scientific balloons are among them. Higher material requirements in these applications drive the need for an accurate measurement system. Therefore, a new system was engineered with enhanced sensitivity and accuracy. Permeability of polymers is affected by permeant solubility and diffusion. One effort to decrease diffusion rates is via increasing the transport path length. We explore this through dispersion of layered silicates into polymers. Layered silicates with effective aspect ratio of 1000:1 have shown promise in improving the barrier and mechanical properties of polymers. The surface of these inorganic silicates was modified with surfactants to improve the interaction with organic polymers. The micro and nanoscale dispersion of the layered silicates was probed using optical and transmission microscopy as well as x-ray diffraction. Thermal transitions were analyzed using differential scanning calorimetry. Mechanical and permeability measurements were correlated to the dispersion and increased density. The essential structure-property relationships were established by comparing semicrystalline and amorphous polymers. Semicrystalline polymers selected were nylon-6 and polyethylene terephthalate. The amorphous polymer was polyethylene terphthalate-glycol. Densification due to the layered silicate in both semicrystalline and amorphous polymers was associated with significant impact on barrier and long term creep behavior. The inferences were confirmed by investigating a semi-crystalline polymer - polyethylene - above and below the glass transition. The results show that the layered silicate influences the amorphous segments in polymers and barrier properties are affected by synergistic influences of densification and uniform dispersion of the layered silicates.
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McBagonluri-Nuuri, David Fred. "Simulation of Fatigue Performance & Creep Rupture of Glass-Reinforced Polymeric Composites for Infrastructure Applications." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36924.

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A simulation model which incorporates the statistical- and numerical-based Lattice Green Function Local Load Sharing Model and a Fracture Mechanics-based Residual Strength Model has been developed. The model simulates creep rupture by imposing a fixed load of constant stress on the composite over the simulation duration. Simulation of the fatigue of glass fiber-reinforced composites is achieved by replacing the constant stress parameter in the model with a sinusoidal wave function. Results from the creep rupture model using fused silica fiber parameters, compare well with S-2 glass/epoxy systems. Results using Mandell's postulate that fatigue failure in glass fiber-reinforced polymeric composites is a fiber-dominated mechanism, with a characteristic slope of 10 %UTS/decade are consistent with available experimental data. The slopes of fatigue curves for simulated composites for three frequencies namely: 2, 5 and 10 Hz are within 12-14 %UTS/decade compared with that of 10.6-13.0%UTS/decade for unidirectionl glass reinforced composites (epoxy and vinyl ester) obtained from Demers' [40] data.<br>Master of Science
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Chaabane, Makram. "Caractérisation expérimentale de l'endommagement des films polymères des ballons pressurisés stratosphériques." Thesis, Toulouse, INPT, 2009. http://www.theses.fr/2009INPT057H.

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Les ballons pressurisés développés par le CNES sont des structures de 8,5 à 12 m de diamètre, qui permettent d’emmener dans la stratosphère des équipements scientifiques pour effectuer des expériences de longue durée. La durée de vie de ces ballons est conditionnée par leur comportement mécanique et notamment le comportement en fluage qui s’il est trop marqué, peut engendrer un changement d’altitude se traduisant alors par une augmentation importante de la contrainte dans la membrane. On observe aussi des défaillances des ballons au cours de leur lancement ou après une brève phase de vol (2 à 24 heures). Afin de mieux comprendre le comportement en vol des ballons, le CNES a mis en place depuis plusieurs années un programme de recherche portant sur l’étude du comportement mécanique de ces structures et des films polymères qui les compose. Il s’est intéressé notamment à l’étude expérimentale et à la modélisation du comportement mécanique en fluage des ballons pressurisés. Plusieurs résultats ont été obtenus permettant de prévoir l’évolution dimensionnelle des ballons suite au phénomène de fluage. En revanche le comportement à la rupture de ces films polymère a été très peu étudié de même que les phénomènes supposés à l’origine de la perte de caractéristiques des films polymères constitutifs des ballons. Les travaux engagés durant cette thèse visent à étudier, quantifier et comprendre les mécanismes d’endommagement amenant la rupture prématurée des ballons. Cet endommagement a deux origines supposées ; d’une part des plis dits simples et triples occasionnés par le stockage, la manipulation et le déploiement des ballons et d’autre part l’endommagement de fluage<br>The super-pressure balloons developed by CNES are a great challenge in scientific ballooning. Whatever the balloon type considered (spherical, pumpkin...), it is necessary to have good knowledge of the mechanical behavior of the envelope regarding to the flight level and the lifespan of the balloon. It appears during the working stages of the super pressure balloons that these last can exploded prematurely in the course of the first hours of flight. For this reason CNES and LGP are carrying out research programs about experimentations and modelling in order to predict a good stability of the balloons flight and guarantee a life time in adequacy with the technical requirement. This study deals with multilayered polymeric film damage which induce balloons failure. These experimental and numerical study aims, are a better understanding and predicting of the damage mechanisms bringing the premature explosion of balloons. The following damages phenomena have different origins. The firsts are simple and triple wrinkles owed during the process and the stocking stages of the balloons. The second damage phenomenon is associated to the creep of the polymeric film during the flight of the balloon. The first experimental results we present in this paper, concern the mechanical characterization of three different damage phenomena. The severe damage induced by the wrinkles of the film involves a significant loss of mechanical properties. In a second part the theoretical study, concerns the choice and the development of a non linear viscoelastic coupled damage behavior model in a finite element code
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Ouyang, Fengxia. "ABAQUS Implementation of Creep Failure in Polymer Matrix Composites with Transverse Isotropy." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1131898124.

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Hayes, Michael David. "Characterization and Modeling of a Fiber-Reinforced Polymeric Composite Structural Beam and Bridge Structure for Use in the Tom's Creek Bridge Rehabilitation Project." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/35852.

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<p> Fiber reinforced polymeric (FRP) composite materials are beginning to find use in construction and infrastructure applications. Composite members may potentially provide more durable replacements for steel and concrete in primary and secondary bridge structures, but the experience with composites in these applications is minimal. Recently, however, a number of groups in the United States have constructed short-span traffic bridges utilizing FRP members. These demonstration cases will facilitate the development of design guidelines and durability data for FRP materials. The Tom's Creek Bridge rehabilitation is one such project that utilizes a hybrid FRP composite beam in an actual field application. </p> <p> This thesis details much of the experimental work conducted in conjunction with the Tom's Creek Bridge rehabilitation. All of the composite beams used in the rehabilitation were first proof tested in four-point bending. A mock-up of the bridge was then constructed in the laboratory using the actual FRP beams and timber decking. The mock-up was tested in several static loading schemes to evaluate the bridge response under HS20 loading. The lab testing indicated a deflection criterion of nearly L/200; the actual field structure was stiffer at L/450. This was attributed to the difference in boundary conditions for the girders and timber panels. </p> <p> Finally, the bridge response was verified with an analytical model that treats the bridge structure as a wood beam resting upon discrete elastic springs. The model permits both bending and torsional stiffness in the composite beams, as well as shear deformation. A parametric study was conducted utilizing this model and a mechanics of laminated beam theory to provide recommendations for alternate bridge designs and modified composite beam designs. </p><br>Master of Science
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Bandorawalla, Tozer Jamshed. "Micromechanics-Based Strength and Lifetime Prediction of Polymer Composites." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/26445.

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With the increasing use of composite materials for diverse applications ranging from civil infrastructure to offshore oil exploration, the durability of these materials is an important issue. Practical and accurate models for lifetime will enable engineers to push the boundaries of design and make the most efficient use of composite materials, while at the same time maintaining the utmost standards of safety. The work described in this dissertation is an effort to predict the strength and rupture lifetime of a unidirectional carbon fiber/polymer matrix composite using micromechanical techniques. Sources of material variability are incorporated into these models to predict probabilistic distributions for strength and lifetime. This approach is best suited to calculate material reliability for a desired lifetime under a given set of external conditions. A systematic procedure, with experimental verification at each important step, is followed to develop the predictive models in this dissertation. The work begins with an experimental and theoretical understanding of micromechanical stress redistribution due to fiber fractures in unidirectional composite materials. In-situ measurements of fiber stress redistribution are made in macromodel composites where the fibers are large enough that strain gages can be mounted directly onto the fibers. The measurements are used to justify and develop a new form of load sharing where the load of the broken fiber is redistributed only onto the nearest adjacent neighbors. The experimentally verified quasi-static load sharing is incorporated into a Monte Carlo simulation for tensile strength modeling. Very good agreement is shown between the predicted and experimental strength distribution of a unidirectional composite. For the stress-rupture models a time and temperature dependent load-sharing analysis is developed to compute stresses due an arbitrary sequence of fiber fractures. The load sharing is incorporated into a simulation for stress rupture lifetime. The model can be used to help understand and predict the role of temperature in accelerated measurement of stress-rupture lifetimes. It is suggested that damage in the gripped section of purely unidirectional specimens often leads to inaccurate measurements of rupture lifetime. Hence, rupture lifetimes are measured for [90/0_3]_s carbon fiber/polymer matrix specimens where surface 90 deg plies protect the 0 deg plies from damage. Encouraging comparisons are made between the experimental and predicted lifetimes of the [90/0_3]_s laminate. Finally, it is shown that the strength-life equal rank assumption is erroneous because of fundamental differences between quasi-static and stress-rupture failure behaviors in unidirectional polymer composites.<br>Ph. D.
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FARINA, LUIS C. "Caracterizacao viscoelastica por meio de ensaios de fluencia e ruptura por fluencia de compositos polimericos de matriz de resina epoxidica e fibra de carbono." reponame:Repositório Institucional do IPEN, 2009. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9391.

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Made available in DSpace on 2014-10-09T12:26:27Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:04:31Z (GMT). No. of bitstreams: 0<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Aguiniga, Gaona Francisco. "Characterization of design parameters for fiber reinforced polymer composite reinforced concrete systems." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/61.

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Corrosion of steel reinforcement in concrete structures results in significant repair and rehabilitation costs. In the past several years, new fiber reinforced polymer (FRP) reinforcing bars have been introduced as an alternative to steel reinforcing bars. Several national and international organizations have recently developed standards based on preliminary test results. However, limited validation testing has been performed on the recommendations of these standards. High variability of the tensile properties, degradation of tensile strength, direct shear capacity, predicted deflections due to creep, cracking behavior of FRP-reinforced concrete flexural members, bond behavior and development length, and effects of thermal expansion on cracking of FRP reinforced concrete have all been reported, but are areas that need further investigation and validation. The objective of this study is to evaluate the characteristics of glass FRP reinforcing bars and provide recommendations on the design and construction of concrete structures containing these bar types with regard to the areas described. The recently developed ACI 440 design guidelines were analyzed and modifications proposed.
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Books on the topic "Polymeric composites – Creep"

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Creep and fatigue in polymer matrix composites. Woodhead Publishing, 2011.

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Creep and Fatigue in Polymer Matrix Composites. Woodhead Publishing, 2019.

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S, Gates Thomas, and Langley Research Center, eds. Effects of physical aging on long-term creep of polymers and polymer matrix composites. National Aeronautics and Space Administration, Langley Research Center, 1994.

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Center, Langley Research, ed. Matrix dominated stress/strain behavior in polymeric composites: Effects of hold time, nonlinearity and rate dependency. National Aeronautics and Space Administration, Langley Research Center, 1992.

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R, Veazie David, Brinson L. Catherine, and Langley Research Center, eds. A comparison of tension and compression creep in a polymeric composite and the effects of physical aging on creep. National Aeronautics and Space Administration, Langley Research Center, 1996.

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Computational Modeling Of Polymer Composites A Study Of Creep And Environmental Effects. Taylor & Francis Inc, 2013.

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Creep and Fatigue in Polymer Matrix Composites. Elsevier, 2019. http://dx.doi.org/10.1016/c2017-0-02292-9.

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Guedes, Rui Miranda. Creep and fatigue in polymer matrix composites. Woodhead Publishing Limited, 2011. http://dx.doi.org/10.1533/9780857090430.

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Rate dependent stress-strain behavior of advanced polymer matrix composites. National Aeronautics and Space Administration, Langley Research Center, 1991.

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Rate dependent stress-strain behavior of advanced polymer matrix composites. National Aeronautics and Space Administration, Langley Research Center, 1991.

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Book chapters on the topic "Polymeric composites – Creep"

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Wu, Daihua, and Bing Jiang. "Creep Mixture Rules of Polymer Matrix Fiber-Reinforced Composite Materials." In Composite Structures. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3662-4_52.

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Pegoretti, A. "Creep and Fatigue Behavior of Polymer Nanocomposites." In Nano- and Micromechanics of Polymer Blends and Composites. Carl Hanser Verlag GmbH & Co. KG, 2009. http://dx.doi.org/10.3139/9783446430129.009.

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Kawai, M. "Off-Axis Creep Behavior of Unidirectional Polymer Matrix Composites at High Temperature." In IUTAM Symposium on Creep in Structures. Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9628-2_45.

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Tang, Tian, and Sergio D. Felicelli. "Effective Creep Response and Uniaxial Tension Behavior of Linear Visco-Elastic Polymer Composites." In Advanced Composites for Aerospace, Marine, and Land Applications II. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093213.ch26.

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Tang, Tian, and Sergio D. Felicelli. "Effective Creep Response and Uniaxial Tension Behavior of Linear Visco-Elastic Polymer Composites." In Advanced Composites for Aerospace, Marine, and Land Applications II. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-48141-8_26.

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Cardon, A. H., and C. Van Vossole. "Some Models for the Transverse Creep and Damage Behaviour of a Unidirectional Reinforced Polymer Matrix Composite." In Progress and Trends in Rheology V. Steinkopff, 1998. http://dx.doi.org/10.1007/978-3-642-51062-5_210.

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Chelliah Machavallavan, Nagaraj, Rishi Raj, and M. K. Surappa. "Solidification Processing of Magnesium Based In-Situ Metal Matrix Composites by Precursor Approach." In Magnesium Alloys [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94305.

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In-situ magnesium based metal matrix composites (MMCs) belong to the category of advanced light weight metallic composites by which ceramic dispersoids are produced by a chemical reaction within the metal matrix itself. In-situ MMCs comprised uniform distribution of thermodynamically stable ceramic dispersoids, clean and unoxidized ceramic-metal interfaces having high interfacial strength. In last two decades, investigators have been collaborating to explore the possibility of enhancing the high temperature creep resistance performance in polymer-derived metal matrix composites (P-MMCs) by utilizing polymer precursor approach. A unique feature of the P-MMC process is that since all constituents of the ceramic phase are built into the polymer molecules itself, there is no need for a separate chemical reaction between the host metal and polymer precursor in order to form in-situ ceramic particles within the molten metal. Among the different polymer precursors commercially available in the market, the silicon-based polymers convert into the ceramic phase in the temperature range of 800–1000°C. Therefore, these Si-based polymers can be infused into molten Mg or Mg-alloys easily by simple stir-casting method. This chapter mainly focuses on understanding the structure–property correlation in both the Mg-based and Mg-alloy based in-situ P-MMCs fabricated by solidification processing via polymer precursor approach.
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Aboudi, Jacob. "Polymer matrix composites: Update." In Creep and Fatigue in Polymer Matrix Composites. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-08-102601-4.00007-2.

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Balachandar, M. A., C. V. Iyer, and J. Raghavan. "Creep and Creep-Rupture of Polymer Composite Laminates." In Design, Manufacturing & Application of Composites. CRC Press, 2020. http://dx.doi.org/10.1201/9781003076155-61.

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Marcovich, N., and M. Aranguren. "Creep behavior and damage of wood–polymer composites." In Wood-polymers Composites. CRC Press, 2008. http://dx.doi.org/10.1201/9781439832639.ch8.

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Conference papers on the topic "Polymeric composites – Creep"

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Cano, Jaime A., and Calvin M. Stewart. "Accelerated Creep Test (ACT) Qualification of Creep-Resistance Using the WCS Constitutive Model and Stepped Isostress Method (SSM)." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-60347.

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Abstract In this study, a qualification of accelerated creep-resistance of Inconel 718 is assessed using the novel Wilshire-Cano-Stewart (WCS) model and the stepped isostress method (SSM) and predictions are made to conventional creep data. Conventional creep testing (CCT) is a long-term continuous process, in fact, the ASME B&amp;PV III requires that 10,000+ hours of experiments must be conducted to each heat for materials employed in boilers and/or pressure vessel components. This process is costly and not feasible for rapid development of new materials. As an alternative, accelerated creep testing techniques have been developed to reduce the time needed to characterize the creep resistance of materials. Most techniques are based upon the time-temperature-stress superposition principle (TTSSP) that predicts minimum-creep-strain-rate (MCSR) and stress-rupture behaviors but lack the ability to predict creep deformation and consider deformation mechanisms that occur for experiments of longer duration. The stepped isostress method (SSM) has been developed which enables the prediction of creep deformation response as well as reduce the time needed for qualification of materials. The SSM approach has been successful for polymer, polymeric composites, and recently has been introduced for metals. In this study, the WCS constitutive model, calibrated to SSM test data, qualifies the creep resistance of Inconel 718 at 750°C and predictions are compared to CCT data. The WCS model has proven to make long-term predictions for stress-rupture, minimum-creep-strain-rate (MCSR), creep deformation, and damage in metallic materials. The SSM varies stress levels after time interval adding damage to the material, which can be tracked by the WCS model. The SSM data is calibrated into the model and the WCS model generates realistic predictions of stress-rupture, MSCR, damage, and creep deformation. The calibrated material constants are used to generate predictions of stress-rupture and are post-audit validated using the National Institute of Material Science (NIMS) database. Similarly, the MCSR predictions are compared from previous studies. Finally the creep deformation predictions are compared with real data and is determined that the results are well in between the expected boundaries. Material characterization and mechanical properties can be determined at a faster rate and with a more cost-effective method. This is beneficial for multiple applications such as in additive manufacturing, composites, spacecraft, and Industrial Gas Turbines (IGT).
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Gonzalez-Gutierrez, Joamin, Zerihun Mellese Megen, Bernd Steffen von Bernstorff, and Igor Emri. "Shear creep compliance of polyoxymethylene copolymers with different molecular weights." In TIMES OF POLYMERS (TOP) AND COMPOSITES 2014: Proceedings of the 7th International Conference on Times of Polymers (TOP) and Composites. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4876770.

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Khabaz, Fardin, Ketan S. Khare, and Rajesh Khare. "Temperature dependence of creep compliance of highly cross-linked epoxy: A molecular simulation study." In TIMES OF POLYMERS (TOP) AND COMPOSITES 2014: Proceedings of the 7th International Conference on Times of Polymers (TOP) and Composites. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4876828.

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Li, K., X. L. Gao, and A. K. Roy. "Analysis of the Linearly Viscoelastic Behavior of Nanotube-Reinforced Polymer Composites." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59988.

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In the last few years a lot of efforts have been made to demonstrate that the addition of carbon nanotubes, even with a small volume fraction, can substantially enhance the stiffness and strength of polymers [1]. Nevertheless, very limited attention has been paid to the viscoelastic responses of nanotube-reinforced polymer composites. Several groups have investigated the changes in glass transition temperatures of polymers induced by adding nanotubes to polymers [2–4]. Fisher [4] also studied the frequency response and the physical aging of polymers with or without nanotubes. However, the creep/stress relaxation behavior of nanotube-reinforced polymer composites is still not well understood. Experimental characterization tends to be configuration specific and expensive. Therefore, there is a need to develop analytical models that can predict the said behavior. The objective of this communication is to present a study on the creep behavior of carbon nanotube-reinforced polymer composites using a continuum-based micromechanics model.
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Prakash, Raghu V., and Monalisha Maharana. "Post-Fatigue Creep and Stress Relaxation Response of a Hybrid Polymer Composite." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71177.

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Polymer composites have a characteristic, composition specific visco-elastic property which influences the damage progression during fatigue cycling. While some researchers have studied the time dependent constitutive response of polymer composites during the first cycle of fatigue loading, very few have experimentally investigated the dependence of visco-elastic response of built-up polymer composite materials at various stages of fatigue cycling [1]. Our earlier studies on fatigue response of polymer composites focused primarily on the stiffness degradation as a function of applied cycles of loading, which represents the gross response of the material [2]. While doing such an experiment, complimentary experimental techniques to measure the temperature evolution was attempted through the use of infrared thermal imaging technique, which gave some insight into the change in temperature response as a function of fatigue cycling. However, there was no systematic measurement of creep and stress relaxation response of the composite material as a function of induced fatigue damage. The present paper describes the results of creep and stress-relaxation obtained during uni-axial fatigue loading of a hybrid polymer composite material. For this purpose, a woven carbon fiber mat was chosen as the synthetic fiber and Flax fiber in the unidirectional form was chosen as the natural fiber that is laid between the two layers of woven carbon fiber mat. Epoxy LY 556 and hardener Araldite® was used for building up of composite laminate by hand-lay-up technique. Dog-bone shaped tensile specimens with a gage width of 13 mm and gage length of 57 mm were extracted from the 250 × 250 mm sq. plate laminate of 2.1 mm thickness using a numerical controlled milling machine. The specimens were tested at 35% of their median tensile strengths under fatigue at a positive stress ratio (Pmin/Pmax) of 0.1 in tension-tension loading. Prior to start of fatigue loading, the specimens were held in load control and the strain in the gage length was measured for understanding the creep response over 2500 seconds. For stress-relaxation characterization, the specimens were held in extensometer control over a period of 2500 sec. The creep and stress relaxation tests were carried out after periodic intervals of fatigue cycling. It was observed that in the case of un-impacted specimens, the creep rate is consistent with the stiffness variation, which in turn, is dependent on the number of fatigue cycles - till it showed signs of de-lamination. Thereafter it was governed by the woven synthetic fiber response. Similarly, the stress relaxation response was found to decrease with increasing fatigue cycles. In case of impacted specimens, the local deformation had a prominent role in terms of creep and stress relaxation response.
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Castagnet, Sylvie, Eric Lainé, A. D’Amore, Domenico Acierno, and Luigi Grassia. "Analysis of the creep behavior of thin polymer films by finite elements simulation of micro-bubble inflation." In V INTERNATIONAL CONFERENCE ON TIMES OF POLYMERS (TOP) AND COMPOSITES. AIP, 2010. http://dx.doi.org/10.1063/1.3455561.

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Acharya, Sunil, Wieslaw Binienda, and David Robinson. "Numerical Modeling of Creep/Damage Polymer Matrix Composites with Transverse Isotropy." In 44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.2003-1662.

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Aguíñiga, F., and H. Estrada. "Creep Induced Deflections of Concrete Elements Reinforced with Polymer Composite Bars." In Architectural Engineering Conference (AEI) 2006. American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40798(190)9.

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Nabavi, F. "Durability Performance of Polymer-Concrete Composites in a Diffusion-Dominated Process." In 10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures. American Society of Civil Engineers, 2015. http://dx.doi.org/10.1061/9780784479346.059.

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Doan, Hai G. M., Hossein Ashrafizadeh, and Pierre Mertiny. "Development of Creep Test Method for Thermoplastic Fiber-Reinforced Polymer Composite Tubes Under Pure Hoop Loading Condition." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93302.

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Abstract Piping made from thermoplastic fiber reinforced polymer composites (TP-FRPCs) is receiving increasing attention in the oil and gas industry. Creep and time-dependent behavior is one of the main factors defining the service life of TP-FRPC structures. The lifetime and time-dependent behavior of TP-FRPC structures can be predicted using simulation tools, such as finite element analysis, to aid in the design optimization by modeling the long-term behavior of the material. Composite material time-dependent properties are required inputs for such models. While there is previous research available on creep testing of TP-FRPCs in laminate geometry, such tests may not enable accurate determination of the composite properties due to edge effects. On the other hand, coupons with tubular geometry not only provide improved load distribution between the fibers and matrix with minimal end effects, they also enable certain loading conditions experienced during typical piping operations such as internal pressure. In this study, a testing method to capture the creep behavior of tubular TP-FRPC specimens subjected to multi-axial loading conditions was developed. Tubular coupons were prototyped by an automated tape placement process. Strain was measure using digital image correlation technique and strain gauges. The development of the test setup forms the foundation for further testing of tubular TP-FRPC coupons at different multi-axial loading conditions. As a preliminary test, the creep behavior of a TP-FRPC tube subjected to pure hoop stress condition was evaluated using the developed testing process.
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Reports on the topic "Polymeric composites – Creep"

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Ren, W., and C. R. Brinkman. Creep and creep-rupture behavior of a continuous strand, swirl mat reinforced polymer composite in automotive environments. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/555471.

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Lara-Curzio, E. The Mechanics of Creep Deformation in Polymer Derived Continuous Fiber-Reinforced Ceramic Matrix Composites. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/777651.

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