Shape Memory Polymer Composites: Characterization and Modeling (Emerging Materials and Technologies)

✍ Scribed by Nilesh Tiwari, Kanif M. Markad

• Publisher: CRC Press
• Year: 2023
• Tongue: English
• Leaves: 225
• Edition: 1
• Category: Library

✦ Synopsis

Shape Memory Polymer Composites discusses the fabrication of smart polymer composites with their material characterization. It covers shape memory polymer composites with two different types of reinforcement: shape memory polymer nanocomposites and shape memory hybrid composites.

Enhancing the mechanical and thermomechanical properties of the shape memory polymers makes them an important class of materials for new age applications ranging from aerospace, biomedical, electronics, to marine engineering. The book discusses how shape memory polymer composites exhibit remarkable mechanical properties, as compared to its corresponding shape memory polymers, without compromising the shape memory behavior. It presents experimental case studies of polymers, polymer composites, and multiphase composites, explaining the effects of each reinforcement on the material properties with corresponding simulation.

The book will be a useful reference for industry professionals and researchers involved with the mechanics of shape memory materials.

✦ Table of Contents

Cover
Half Title
Series Page
Title Page
Copyright Page
Dedication
Table of Contents
About the Authors
Chapter 1 Introduction to Shape Memory Polymer
1.1 Discovery of Shape Memory Effect
1.2 Classification of Shape Memory Materials
1.3 Shape Memory Effect in Polymers
1.4 Governing Principles of Shape Memory Effect in Polymers
1.5 Molecular Mechanism of the Thermally Induced Shape Memory Effect
1.5.1 Transition Temperature
1.6 The Role of Crystallization
1.7 Shape Memory Characterization
1.7.1 Morphology-Dependent Function
1.8 Application
1.9 Outlook Challenges
1.10 Shape Memory Alloy
1.11 Comparison Between Shape Memory Alloy and Shape Memory Polymer
References
Chapter 2 Shape Memory Polymer Composites
2.1 Composites
2.2 Fiber
2.2.1 Glass Fibers
2.2.2 Carbon Fiber
2.2.3 Aramid Fiber
2.2.4 Extended-Chain Polyethylene Fibers
2.2.5 Natural Fibers
2.3 Matrix
2.4 Shape Memory Polymer Composites
2.4.1 Shape Memory Fiber-Reinforced Polymer Composites
2.4.2 Shape Memory Polymer Nanocomposites
2.4.3 Shape Memory Hybrid Composites
2.5 Fiber Content, Density, and Void Content
References
Chapter 3 Fabrication and Characterization
3.1 Basic Concepts
3.1.1 Degree of Cure
3.1.2 Gel Time
3.2 Bag-Molding Process
3.3 Compression Molding
3.4 Pultrusion
3.5 Filament Winding
3.5.1 Winding Strategies
3.6 Resin Transfer Molding
3.7 Characterization
3.7.1 Tensile Testing
3.7.2 Compressive Testing
3.7.3 Flexural Testing
3.7.4 In-Plane Shear Testing
3.7.5 Interlaminar Shear Strength Testing
3.7.6 Fatigue Testing
3.7.7 Coefficient of Thermal Expansion
3.7.8 Thermal Conductivity
3.7.9 Crosslink Density in Shape Memory Polymers
3.7.10 Nuclear Magnetic Resonance Spectroscopy
3.7.11 Thermal Characterization
3.7.12 Morphological Characterization
3.7.13 Scattering Techniques
3.7.14 Cyclic/Thermomechanical Testing
3.8 Case Study: Fabrication and Characterization of Multiphase Shape Memory Composites
3.8.1 Specimen Preparation
3.8.2 Material Characterization
3.8.3 Mechanical Properties
3.8.4 Thermomechanical Analysis
3.8.5 Shape Memory Properties
References
Chapter 4 Modeling of Shape Memory Behavior
4.1 Constitutive Models of SMPs
4.1.1 Theory of Viscoelasticity
4.1.2 The Phase Transformation Theory
4.1.3 The Combination Theory
4.2 Micromechanics of Three-Phase Composites
4.2.1 Equivalent Continuum Model for CNTs
4.2.2 Mechanical Characterization of a Matrix Embedded With CNTs
4.2.3 Homogenization Techniques (HTs)
4.2.4 Chamis Approach
4.2.5 Hahn Approach
4.2.6 Hashin–Rosen Approach
4.2.7 Halpin–Tsai Approach
4.3 Buckling Behavior of SMPCs
4.3.1 Preparation of Strain in SMPC Plates
4.3.2 Mathematical Investigation of the Strain Energy in the SMPC Panel
4.3.3 Shear Strain Energy in the xy Plane
4.3.4 Shear Strain Energy in the yz Plane
4.3.5 Stretch Strain Energy of the SMPC
4.3.6 Strain Energy of the Fibers
4.3.7 Microbuckling Considerations of SMPC
4.3.8 Estimation of z[sub(n)] and z[sub(b)]
4.3.9 Evaluation of the Half Wavelength for Fibers
4.4 Case Study: Microbuckling in Shape Memory Polymer Composites
4.4.1 Temperature-Regulated Properties of SMPC
4.4.2 Position of Neutral Strain Plane and Critical Buckling Plane
4.4.3 Half Wavelength of the Fiber
References
Chapter 5 Finite Element Analysis
5.1 Background of Finite Element Analysis of Composites
5.2 Bending Analysis of Laminates
5.2.1 Stress–Strain–Displacement Behavior
5.2.2 Strain Energy of Beam
5.2.3 Strain Energy of the Beam Element
5.2.4 Governing Equation of Bending
5.3 Case Study: Flexural Analysis of a CNT-Reinforced Composite Beam
5.4 Case Study: Flexural Analysis of Shape Memory Polymer Hybrid Composites (SMPHC)
References
Appendix 1: Case Study: Modeling of Shape Memory Polymer
Appendix 2: Case Study: Modeling of Shape Memory Polymer Composites
Appendix 3: Case Study: Mechanical Properties of the Shape Memory Hybrid Composite Using the Halpin–Tsai Model
Index