4 edition of Time Dependent and Nonlinear Effects in Polymers and Composites (Astm Special Technical Publication// Stp) (Astm Special Technical Publication// Stp) found in the catalog.
January 1, 2000
by ASTM International
Written in English
|Contributions||Richard A. Schapery (Editor), C. T. Sun (Editor)|
|The Physical Object|
|Number of Pages||400|
Temperatures effects. Polymer materials and their composites deform, or flow, over time when a constant load is applied. This deformation, or flow, results from the molecular motion of the polymer chains in an attempt to minimize localized energy (Papanicolaou and Zaoutsos ).With an increase of temperature, the frequency of the molecular regrouping will increase, speeding up the . The highly nonlinear behavior of composites is related to the nonlinear viscoelasticity and viscoplasticity. These phenomena are accounted for by simple material models, as suggested in this study.
It is assumed that the deformation behavior of a glassy polymer up to the yield point is completely determined by the linear relaxation time spectrum and that the nonlinear effect of stress is to. The Rate (Time)-Dependent Mechanical Behavior of the PMR Thermoset Polymer at Temperatures in the – °C Range: Experiments and Modeling J. Pressure Vessel Technol (December, ) Equivalent Time Temperature Model for Physical Aging and Temperature Effects on Polymer .
With contributions from established international experts in the field, volume one covers different types of natural rubber-based blends and IPNs, whilst volume two focuses on natural rubber-based composites and nanocomposites. The book provides a one stop reference resource for professionals, researchers, industrial practitioners, graduate. Book Description. Computational Modeling of Polymer Composites: A Study of Creep and Environmental Effects details the development of polymeric materials and their use in smart materials and composite structures in aerospace and automotive industries. Based on the authors' work during the past 30 years, this book provides a strong understanding of the theories and associated finite element.
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It also identifies important unsolved fundamental problems. 18 peer-reviewed papers are grouped under the subheadings of Polymers and Composites. Polymers covers: • Chemical and Physical Aging • Nonlinear Viscoelasticity and Iscoplasticty. Composites addresses: • Effect of Physical Aging on Time-Dependent Behavior.
Papers from the Symposium on Time Dependent and Nonlinear Effects in Polymers and Composites, held May, Atlanta, Ga. Description: vii, pages: illustrations ; 23 cm. Get this from a library. Time dependent and nonlinear effects in polymers and composites. [Richard Allan Schapery; C T Sun; ASTM International.;] -- Annotation Improved reliability in commercial and military applications requires improved understanding of and predictive models for the time- dependent and nonlinear mechanical behavior of.
The journal deals with the time-dependent mechanical properties of solid polymers, metals, ceramics, concrete, wood, or their composites.
It is recognized that certain materials can be in the melt state as function of temperature and/or pressure. Polymeric materials exhibit specific time dependent effects under mechanical and environmental loading histories.
The fibers used for the reinforcement of the polymeric matrix are generally elastic or elasto-plastic, but may even be viscoelastic. Global and Internal Time Dependent Behaviour of Polymer Matrix Composites.
In: Dvorak G.J. (eds Cited by: 4. The final part of the book discusses ways of testing and predicting long-term creep and fatigue in polymer matrix composites. With its distinguished editor and international team of contributors, Creep and Fatigue in Polymer Matrix Composites is a standard reference for all those researching and using polymer matrix composites in such areas as.
Auhl et al. studied the nonlinear rheological responses of molten binary blends of polymers with long and short chains, and predicted a novel mechanism whereby the effective stretch relaxation time of the long chains in the bimodal blend could be enhanced substantially, which.
The feature that makes polymer composites so promising in industrial applications is the opportunity to tailor their properties with special fillers. In the present overview, the roles of various fillers such as short fibers, solid lubricants, and nanosized tribofillers, in sliding wear behavior of polymer composites.
Creep and Fatigue in Polymer Matrix Composites, Second Edition, updates the latest research in modeling and predicting creep and fatigue in polymer matrix composites.
The first part of the book reviews the modeling of viscoelastic and viscoplastic behavior as a. Microbeam bending and nano-indentation experiments illustrate that length scale-dependent elastic deformation can be significant in polymers at micron and submicron length scales.
In an extensive research effort into the nonlinear viscoelastic behavior of PVC and PMMA as well as glass and carbon fabric reinforced thermoplastics, Brueller (,) developed and applied the following model for the description of the time-dependent behavior under creep loading.
Polymer composites exhibit time-dependent mechanical properties and the changes in stress/strain that occur over time are still observed, even decades later. The increasing number of applications of natural fibre composites have increased the importance of focusing on time-dependent viscoelastic properties, such as creep resistance, stress.
Physics of Photorefraction in Polymers describes our current understanding of the physical processes that produce a photorefractive effect in key composite materials.
Topics as diverse as charge generation, dispersive charge transport, charge compensation and trapping, molecular diffusion, organic composite structure, and nonlinear optical wave. The behavior of these composites has to be studied and mechanisms occurring during the loading must be identified.
The effect of temperature and relative humidity on mechanical behavior of natural fiber reinforced bio-based matrix composites subjected to the tensile loading was investigated. Time dependent behavior of these materials is analyzed. In this paper, a nonlinear and time-dependent evolutive analysis model, previously developed by the authors, is applied to the prediction of the response of fiber-reinforced polymer (FRP)-strengthened concrete structures in flexure.
Computational Modeling of Polymer Composites: A Study of Creep and Environmental Effects delves into both uniaxial and multiaxial cases and delayed failure before discussing the finite element analysis of the nonlinear diffusion process in polymers.
A composite material (also called a composition material or shortened to composite, which is the common name) is a material made from two or more constituent materials with significantly different physical or chemical properties that, when combined, produce a material with characteristics different from the individual components.
The individual components remain separate and distinct within. Bocchieri, R.T. and R.A. Schapery, “Nonlinear Viscoelastic Behavior of Rubber-Toughened Carbon and Glass/Epoxy Composites,” Time Dependent and Nonlinear Effects in Polymers and Composites, ASTM STP, pp.
Nonlinear viscoelastic behavior of paper fiber composites Article in Composites Science and Technology 65(10) August with 22 Reads How we measure 'reads'.
“A Distortion-Modified Free Volume Theory for Nonlinear Viscoelastic Behavior”, Mechanics of Time-Dependent Materials, 7: 89–, CrossRef Google Scholar Robotnov, Y.N., Elements of Hereditary solid Mechanics, MIR Publishers, Moscow. This study formulates a concurrent micromechanical model for predicting effective responses of fiber reinforced polymer (FRP) composites, whose constituents exhibit thermo-viscoelastic behaviors.
The studied FRP composite consists of orthotropic unidirectional fiber and isotropic matrix. The viscoelastic material properties for the fiber and matrix constituents are allowed to change with the.Buy Introduction to Nonlinear Optical Effects in Molecules and Polymers on FREE SHIPPING on qualified orders Introduction to Nonlinear Optical Effects in Molecules and Polymers: Prasad, Paras N., Williams, David J.: : BooksFormat: Hardcover.Nonlinear Viscoelastic Behavior of Glassy Polymers and Its Effect on the Onset of Irreversible Deformation of the Matrix Resin in Continuous Fiber Composites.
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