Failure of Fibre-Reinforced Polymer Composites

ISBN-13: 9780367653156 / Angielski / Twarda / 2021 / 170 str.

Mohamed Thariq Hameed Sultan; M. Rajesh; K. Jayakrishna

Opis

The proposed book focusses on failure of polymer composites, ways to enhance failure resistance, constituents and repair including associated complexities. It discusses characterization and experimentation of the composites under loading and topics as green composites, advanced materials and composite joint failure, buckling failure and so forth.

Spis treści

1 Natural Fibre Reinforced Polymer Composites - A Newer Materials for Weight-Sensitive Applications 1.1 Introduction 1.2 Natural fibres and their origin 1.3 The Structure of Natural Fibres 1.4 Properties of Natural Fibres 1.5 Use of Natural fibres in Composites 1.6 Natural fibre Composites for packaging Materials 1.7 Short areca and maize fibre reinforced composites Conclusions References 2 Environmental factors affecting the fiber-matrix interface 2.1 Introduction 2.2 A comprehensive chemistry and character of interface 2.3 Behavior of interface 2.4 Interfacial reaction 2.5 Interface character on structural durability 2.6 Characterization of interface 2.7 Interfacial micro-characterization 2.8 Development of residual stresses at interface 2.9 Engineering of interface 2.10 Effects of environmental factors on FRP composites 2.10.1 Moisture uptake kinetics of interface 2.11 Influence of temperature on mechanical behavior 2.12 Variation of crosshead speed and environmental situations of the composites 2.13 Influence of radiations and different exterior environments on FRPs Conclusions and future perspectives Acknowledgement References 3 Ageing and its Influence on Mechanical Properties of Banana/Sisal Hybrid Composites- Experimental and Analytical Approach 3.1 Introduction 3.2 Materials and Methods 3.3 Testing standards 3.4 Water absorption behavior 3.5 Reinforcement Models 3.5.1 Parallel and Series Model 3.5.2 HIRSCH’S MODEL 3.6 Results and Discussions 3.6.1 Fundamental Mechanism of Water absorption 3.6.2 Tensile Properties of composite 3.6.3 Flexural Properties of Composites 3.6.4 Impact Properties of composites Conclusions References 4 Interfacial adhesion improvement of polymer composites using graphene fillers 4.1 Introduction 4.2 Graphene: Applicability spectrum 4.2.1 Graphene: Improved mechanical strength 4.2.2 Graphene: Improved Thermal stability 4.2.3 Graphene: Next-Gen materials 4.2.4 Graphene: Improved Fracture Strength 4.3 Challenges Conclusios References 5 Failure models of composite structure under impact loading 5.1 Introduction 5.2 Damage in material composite 5.3 Classification of impacts 5.3.1 High velocity effect 5.3.2 Low velocity impact 5.4 Solution techniques for impact 5.5 Impact response 5.6 Effect forces on the composite substances 5.7 Modes of failure in metallic structure 5.7.1 Failure of the matrix 5.7.2 Delaminations 5.7.3 The failure fibre 5.7.4 Penetration 5.8 Modes of failure in laminated composite structure Conclusion References 6 Challenges of adhesively bonded joints and their advantages over mechanical fastening 6.1 Introduction 6.2 Significant importance of multi material joint 6.3 Mechanical Joining Methods 6.3.1 Bolts and Nuts 6.3.2 Screws 6.3.3 Rivets 6.3.4 Moulded in threads 6.4 Adhesive bonded joints 6.4.1 Adhesive 6.4.2 Adhesion 6.4.3 Adherend 6.4.4 Adhesive types 6.4.5 Adhesive Advantages 6.4.6 Adhesive Disadvantages 6.5 Adhesive bonded joints and its types 6.5.1 Co-curing 6.5.2 Co-bonding 6.5.3 Secondary bonding 6.6 Bonded joint design and Importance of process parameters 6.6.1 Surface treatment 6.6.2 The factors involved in selection of surface treatment for adherends (LeBacq et al. 2002; Oldewurtel 2019) 6.6.3 Basic surface treatment 6.6.4 Fundamental surface treatment 6.6.5 Special surface treatment 6.6.6 Quality assessment on Surface preparation using Water break test 6.6.7 Adherend geometry 6.6.8 Adhesive thickness 6.6.9 Overlap length 6.6.10 Fabrication of adhesively bonded joints 6.6.11 The steps involved in bonded joint fabrication are as follows (Jensen et al. 2016; Ebnesajjad 2009) 6.7 Mechanical characterizations for bonded joints 6.7.1 Lap shear tests 6.7.2 The essential factors to be considered in lap joint efficiency test: (Budhea et al. 2017; Broughton 2012) 6.7.3Fatigue tests 6.7.4 Creep tests 6.7.5 Post failure analysis 6.7.6 Differential scanning calorimetry (DSC) 6.7.7 Dynamic mechanical thermal analysis (DMTA) 6.7.8 Computational Simulation studies related to adhesives 6.7.9 Non-Destructive Test and Evaluation (NDT&E) 6.8 Environmental Durability of Adhesively Bonded Joints 6.8.1 Effect of temperature 6.8.2 Effect of hydrothermal ageing 6.8.3 Effect of hygrothermal ageing 6.9 Novelty and Advancements in Polymeric materials 6.10 Complex geometries where adhesive can be applicable compared to traditional joints 6.11 Advantage of adhesively bonded structural joints over mechanical fastening Conclusion Acknowledgements References 7 Damage Identification of Natural Fiber Composites by Using Modal Parameters 7.1 Introduction 7.2 Materials and Methods 7.2.1 Hemp fiber (Cannabis sativa) 7.2.2 Specimen preparation 7.2.3 Low velocity impact (LVI) 7.2.4 Modal analysis 7.2.5 Modal Assurance Criterion (MAC) 7.3 Results and Discussions 7.3.1 Modal parameter identification 7.3.2 Modal Assurance Criterion (MAC) Conclusion Funding Acknowledgments References 8 An overview of adhesive bonded composite joint failure: critical comparison with cocuring, co-bonding, and secondary bonding 8.1 Introduction 8.2 Adhesive bonded joints in composite materials 8.3 Adhesive bonding of composites 8.4 Variables influencing the reinforced joints 8.4.1 Effect of Surface readiness in reinforced Joints 8.4.2 Effect of potential disappointment inception modes 8.4.3 Impact of Joint Configuration 8.5 Displaying methods of composites failure 8.5.1 Failure Criterion Method 8.5.2 Continuum Damage Mechanics(CDM) Method 8.5.3 Plasticity Method 8.5.4 Delamination Modelling 8.6 Environmental parameters influencing the bonded joints of efficiency 8.6.1 Pre-bond dampness 8.6.2 Post bond dampness 8.6.3 Temperature 8.6.4 Consolidated dampness and temperature impacts Conclusion References 9 Vibro-Acoustic Behavior of a Damaged Honeycomb Core 9.1 Introduction 9.2 Materials and Methods 9.3 Results and Conclusion 9.3.1 Experimental Work 9.3.2 Numerical Simulation Conclusion References10 Synthesis of green hybrid composite films for packaging applications: comparative study with conventional materials 10.1 Introduction 10.2 Material and methods 10.2.1 Materials 10.2.2 Pretreatment of NBH 10.2.3 Preparation of films 10.3 Measurements 10.3.1 Scanning electron microscopy 10.3.2 Water absorption 10.3.3 Mechanical properties 10.3.4 Light transmittance 10.3.5 Natural soil burial 10.4 Results 10.4.1 Mechanical properties 10.4.2 Water uptake 10.4.3 Optical properties 10.4.4 Soil burial test 10.4.5 SEM 10.4.6 Comparative study of hybrid films 10.6 Conclusion References 11 Damage of the polymer matrix in transport applications 11.1 Introduction 11.2 Use of polymer composite materials in transportation applications 11.3 Damage in Polymer matrix composites 11.4 Mechanisms of damage in PMCs 11.4.1 Interfacial debonding 11.4.2 Matrix micro cracking/intra-laminar cracking 11.4.3 Interfacial sliding 11.4.4 Delamination/interlaminar cracking 11.4.5 Manufacturing defects 11.4.6 Conclusion 11.5 Failure mechanisms of polymer matrix composites in transport applications 11.5.1 Failure mechanisms of polymer matrix composites in aerospace 11.5.2 Failure mechanisms of polymer matrix composites in marine applications 11.5.3 Failure mechanisms of polymer matrix composites in automotive applications 12 Impact Analysis of Bio-composite Laminate for Low and Intermediate Velocity Application 12.1 Introduction 12.2 Finite element modeling 12.2.1 Geometry clean-up 12.3 Methodology 12.3.1 Material property 12.4 Meshing 12.4.1 Mesh method 12.4.2 Sphere of Influence 12.5 Load and boundary conditions 12.5.1 Criteria for selecting the stand-off distance 12.5.2 Impact Energy iterations 12.6 Developed Material Application 12.6.1 Solid Model Generation 12.6.2 Mesh Generation 12.6.3 Stress and Total deformation 12.7 Results and discussion 12.7.1 10% weight of reinforcement 12.7.2 20% weight of reinforcement 12.7.3 30% weight of reinforcement 12.8 Impact energy 12.8.1 Analytical method 12.8.2 Low-velocity impact 12.8.3 Intermediate velocity impact 12.8.4 Simulation method 12.9 Application - Hull structure: 12.9.1 Pressure 12.10 Energy plots 12.11 Validation of Hull Structure and Car body impact analysis Conclusion Acknowledgment References 13 Failure of polymer matrix in space applications 13.1Introduction 13.2 Mechanical failures 13.2.1 Natural fibre-PMC 13.2.2 Glass fibre/Carbon fibre-PMC 13.3 Wear failure Summary References