Experimental Analysis Of High Temperature Shape Memory Polymers For Deployable Structures
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Experimental Analysis Of High Temperature Shape Memory Polymers For Deployable Structures
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Author : Mohamad Youssef ElMaoud
language : en
Publisher:
Release Date : 2019
Experimental Analysis Of High Temperature Shape Memory Polymers For Deployable Structures written by Mohamad Youssef ElMaoud and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Shape memory polymers categories.
"Shape Memory Polymers (SMP) continue to capture interest of the aerospace industry due to their unique properties. Compared to shape memory alloys, this class of smart materials is lighter in weight and can undergo significantly larger recoverable deformations. However, the recovery stresses, and therefore the loads that can be supported, are inferior compared to shape memory alloys. This limitation has triggered efforts to develop Shape Memory Polymer Composites (SMPC), using SMP epoxy resins, with the ability to overcome the aforementioned draw back. However, the focus has been on SMPs with low transformation temperatures below 100°C. On the other hand, certain aerospace applications require shape memory polymers with higher transformation temperatures to prevent undesirable actuation upon heat exposure. Moreover, and despite significant work on characterizing mechanical and recovery properties of shape memory polymers, the literature lack full field characterization of recovery properties, in particular at elevated temperatures. In this work, a high temperature thermoset epoxy SMP (Tg~ 130°C), named EPONSMP, is thoroughly investigated. The study provides comprehensive experimental analysis of the mechanical and shape memory properties of the aforementioned high temperature epoxy SMP. In addition, this study uses a full-field characterization technique, Digital Image Correlation (DIC), to provide further insight on localization, heterogeneity and local recovery of shape memory strains. Furthermore, the study evaluates the recovery properties of SMP samples programmed at different loading conditions (i.e. bending, tensile) and proposes shape-recovery evaluation methods that can be later implemented on other SMPs. The EPON SMP samples were successfully manufactured and evaluated in this work. Stress free shape recovery was observed for SMP samples programmed at different loading conditions (i.e. bending, tensile). Moreover, the recovery rate was found to be dependent on programmed strain level and recovery temperature. Furthermore, the SMP displayed less shape recovery while under stress. Degradation in the SMP’s ductility was observed at elevated temperatures. In addition, the effects of thermal stresses and strains were quantified and observed to be highly significant in the SMP programming and shape recovery processes."--Abstract.
Cold Hibernated Elastic Memory Structure
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Author : Witold M. Sokolowski
language : en
Publisher: CRC Press
Release Date : 2018-12-07
Cold Hibernated Elastic Memory Structure written by Witold M. Sokolowski and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-07 with Technology & Engineering categories.
Cold hibernated elastic memory (CHEM) is an innovative, smart material technology that uses shape memory polymers in open cellular structures. This book extensively describes CHEM self-deployable structures, provides basic property data and characteristics, discusses advantages, and identifies numerous space, commercial, and medical applications. Some of these applications have been experimentally and analytically investigated with inspiring results and are revealed here. CHEM technology has a potential to provide groundbreaking self-deployable space structures. Some cutting-edge space CHEM concepts described in this book represent the introduction of a new generation of space deployable structures. CHEM materials have unique characteristics that enable the manufacture of self-deployable stents and other medical devices not possible currently. One of the medical applications, the CHEM endovascular treatment of aneurysm, is being experimentally explored with promising results that would save lives. This book provides a long list of interesting potential commercial CHEM applications that could simplify and make life easier at low cost. One of these products, the self-reconfiguring armchair, is already being set up for mass production. This book will be of interest to all engineering researchers, scientists, engineers, students, designers, and technologists across their relevant fields of interest. The exceptional characteristics of CHEM technology are presently enabling technologists to develop many applications ranging from outer space to inside the human body. As a result, CHEM structures are in the process of reshaping our thinking, approaches, and design methods in many ways that conventional materials and approaches do not allow.
Mechanics Of Multiscale Hybrid Nanocomposites
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Author : Farzad Ebrahimi
language : en
Publisher: Elsevier
Release Date : 2022-01-25
Mechanics Of Multiscale Hybrid Nanocomposites written by Farzad Ebrahimi and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-01-25 with Technology & Engineering categories.
Mechanics of Multiscale Hybrid Nanocomposites provides a practical and application-based investigation of both static and dynamic behaviors of multiscale hybrid nanocomposites. The book outlines how to predict the mechanical behavior and material characteristics of these nanocomposites via two-step micromechanical homogenization techniques performed in an energy-based approach that is incorporated with the strain-displacement relations of shear deformable beam, plate and shell theories. The effects of using various nanofillers are detailed, providing readers with the best methods of improving nanocomposite stiffness. Both numerical (Ritz, Rayleigh-Ritz, etc.) and analytical (Navier, Galerkin, etc.) solution methods are outlined, along with examples and techniques. - Demonstrates the influences of carbon nanotube agglomerates and wave phenomena on the constitutive modeling of three-phase hybrid nanocomposites - Analyzes nonlinear dynamic characteristics of hybrid nanocomposite systems, as well as how to monitor the system's stability via linearization technique - Discusses the stability of linear nanocomposite systems subjected to the dispersion of elastic waves and bending loads - Outlines how to design three-phase nanocomposite structures for resistance against buckling-mode failure - Instructs how to derive the governing equations of continuous systems in both linear and nonlinear regimes in the framework of various types of kinematic shell and plate theories
Shape Memory Polymers
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Author : Jinlian Hu
language : en
Publisher: Smithers Rapra
Release Date : 2014-05-27
Shape Memory Polymers written by Jinlian Hu and has been published by Smithers Rapra this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-27 with Science categories.
Shape-memory polymers (SMP) are a unique branch of the smart materials family which are capable of changing shape on-demand upon exposure to external stimulus. The discovery of SMP made a significant breakthrough in the developments of novel smart materials for a variety of engineering applications, superseded the traditional materials, and also influenced the current methods of product designing. This book provides the latest advanced information of on-going research domains of SMP. This will certainly enlighten the reader to the achievements and tremendous potentials of SMP. The basic fundamentals of SMP, including shape-memory mechanisms and mechanics are described. This will aid reader to become more familiar with SMP and the basic concepts, thus guiding them in undergoing independent research in the SMP field. The book also provides the reader with associated challenges and existing application problems of SMP. This could assist the reader to focus more on these issues and further exploit their knowledge to look for innovative solutions. Future outlooks of SMP research are discussed as well. This book should prove to be extremely useful for academics, R&D managers, researcher scientists, engineers, and all others related to the SMP research.
Design And Control Of Adaptive Civil Structures
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Author : Gennaro Senatore
language : en
Publisher: Frontiers Media SA
Release Date : 2021-09-13
Design And Control Of Adaptive Civil Structures written by Gennaro Senatore and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-09-13 with Technology & Engineering categories.
Finite Element Analysis Of Polymers And Composites
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Author : Sathish Kumar Palaniappan
language : en
Publisher: Elsevier
Release Date : 2024-08-30
Finite Element Analysis Of Polymers And Composites written by Sathish Kumar Palaniappan and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-08-30 with Technology & Engineering categories.
Finite Element Analysis of Polymers and its Composites offers up-to-date and significant findings on the finite element analysis of polymers and its composite materials. It is important to point out, that to date, there are no books that have been published in this concept. Thus, academicians, researchers, scientists, engineers, and students in the similar field will benefit from this highly application-oriented book. This book summarizes the experimental, mathematical and numerical analysis of polymers and its composite materials through finite element method. It provides detailed and comprehensive information on mechanical properties, fatigue and creep behaviour, thermal behaviour, vibrational analysis, testing methods and their modeling techniques. In addition, this book lists the main industrial sectors in which polymers and its composite materials simulation is used, and their gains from it, including aeronautics, medical, aerospace, automotive, naval, energy, civil, sports, manufacturing and even electronics. - Expands knowledge about the finite element analysis of polymers and composite materials to broaden application range - Presents an extensive survey of recent developments in research - Offers advancements of finite element analysis of polymers and composite materials - Written by leading experts in the field - Provides cutting-edge, up-to-date research on the characterization, analysis, and modeling of polymeric composite materials
Applied Mechanics And Mechatronics Automation
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Author : Xiang Hong Huang
language : en
Publisher: Trans Tech Publications Ltd
Release Date : 2012-06-04
Applied Mechanics And Mechatronics Automation written by Xiang Hong Huang and has been published by Trans Tech Publications Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-06-04 with Technology & Engineering categories.
Selected, peer reviewed papers from the 2012 International Applied Mechanics, Mechatronics Automation Symposium (IAMMAS 2012), September 7-9, 2012, Shenyang, Liaoning, China
Green Power Materials And Manufacturing Technology And Applications Ii
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Author : Shao Bo Zhong
language : en
Publisher: Trans Tech Publications Ltd
Release Date : 2012-11-12
Green Power Materials And Manufacturing Technology And Applications Ii written by Shao Bo Zhong and has been published by Trans Tech Publications Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-11-12 with Technology & Engineering categories.
Selected, peer reviewed papers from the 2nd International Conference on Green Power, Materials and Manufacturing Technology and Applications (GPMMTA 2012), July 17-19, 2012, Kunming, China
Creep And Fatigue In Polymer Matrix Composites
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Author : Rui Miranda Guedes
language : en
Publisher: Woodhead Publishing
Release Date : 2019-03-14
Creep And Fatigue In Polymer Matrix Composites written by Rui Miranda Guedes and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-03-14 with Technology & Engineering categories.
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 way of predicting performance and service life. Final sections discuss techniques for modeling creep rupture and failure and how to test and predict long-term creep and fatigue in polymer matrix composites. - Reviews the latest research in modeling and predicting creep and fatigue in polymer matrix composites - Puts a specific focus on viscoelastic and viscoplastic modeling - Features the time-temperature-age superposition principle for predicting long-term response - Examines the creep rupture and damage interaction, with a particular focus on time-dependent failure criteria for the lifetime prediction of polymer matrix composite structures that are illustrated using experimental cases
Shape Memory Polymers For Biomedical Applications
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Author : L Yahia
language : en
Publisher: Elsevier
Release Date : 2015-03-19
Shape Memory Polymers For Biomedical Applications written by L Yahia and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-19 with Technology & Engineering categories.
Shape memory polymers (SMPs) are an emerging class of smart polymers which give scientists the ability to process the material into a permanent state and predefine a second temporary state which can be triggered by different stimuli. The changing chemistries of SMPs allows scientists to tailor important properties such as strength, stiffness, elasticity and expansion rate. Consequently SMPs are being increasingly used and developed for minimally invasive applications where the material can expand and develop post insertion. This book will provide readers with a comprehensive review of shape memory polymer technologies. Part 1 will discuss the fundamentals and mechanical aspects of SMPs. Chapters in part 2 will look at the range of technologies and materials available for scientific manipulation whilst the final set of chapters will review applications. - Reviews the fundamentals of shape memory polymers with chapters focussing on the basic principles of the materials - Comprehensive coverage of design and mechanical aspects of SMPs - Expert analysis of the range of technologies and materials available for scientific manipulation