Diccionario politécnico Beigbeder
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When fibres in a composite are discontinuous and are shorter than a few millimetres, the composite is called a 'short fibre reinforced composite (SFRP)'. SFRPs have found extensive applications in automobiles, business machines, durable consumer items, sporting goods and electrical industries owing to their low cost, easy processing and superior mechanical properties over the parent polymers. The book summarises recent developments in this area, focusing on the fundamental mechanisms that govern the mechanical properties including strength, modulus, fracture toughness and thermal properties of SFRP materials. This book covers the following topics: extrusion compounding and injection moulding, major factors affecting mechanical performance, stress transfer, strength, elastic modulus flexural modulus, thermal conductivity and expansion, non-linear stress-strain behaviour and fracture mechanics of short fibre reinforced polymers. With its distinguished team of authors, Science and engineering of short fibre reinforced polymer composites is a standard reference for anyone involved in the development, manufacture and use of SFRPs. It will also provide an in-depth understanding of the behaviour of these versatile materials.
INDICE: Introduction to short fibre reinforced polymer composites - Introduction - Mechanical and physical properties - Organization of the book - References Extrusion compounding and injection moulding - Introduction - Extrusion compounding - Injection moulding - References Major factors on performance of short fibre reinforced polymers - Introduction - Modified rule of mixtures - Fibres - Polymer matrices - Interface and interphase - Fibre length - Fibre orientation - Fibre volume fraction - References Stress transfer in short fibre reinforced polymers - Model review - Single-fibre model - Multi-fibre model - Local stress distribution - Finite element analysis - References Strength of short fibre reinforced polymers - Introduction - Longitudinal strength of unidirectionally aligned short fibre reinforced polymers - Strength of partially aligned short fibre reinforced polymers - Anisotropy of tensile strength of short fibre reinforced polymer (SFRP) composites - Strength of randomly aligned short fibre reinforced polymers - Strength of hybrid short fibre reinforced polymer composites - References Elastic modulus of short fibre reinforced polymers - Introduction - Elastic modulus of unidirectional short fibre reinforced composites - Elastic modulus of partially aligned short fibre reinforced composites - Anisotropy of modulus of short fibre reinforced polymer composites - Random short fibre reinforced polymer composites - Hybrid short fibre reinforced polymer composites - Numerical methods - Effect of interphase properties on the composite modulus - References Flexural modulus of short fibre reinforced polymers - Introduction - Flexural modulus of SFRP composites - References Thermal conductivity and expansion of short fibre reinforced polymer composites - Introduction - Thermal conductivity - Thermal expansion - References Non-linear stress-strain behaviour - Introduction - Macroscopic stress-strain relationship - Damping behaviour by interface non-elasticity - Relaxation effects caused by viscoelastic matrix behaviour - References Fracture mechanics - Introduction - Basic concepts for homogeneous materials - Application of fracture mechanics to fibre reinforced composites - Mechanisms of fracture toughness and energy dissipation - Work of fracture of notched specimens - Work of fracture of un-notched specimens - Discussion on dependence of the work of fracture on loading rate, volume fraction and interface quality - Discussion of experimental and modelling results for short glass fibre reinforced polyethylene - The influence of fibre orientation, length and shape on the work of fracture - Fracture toughness - Relation between fracture toughness and the work of fracture - Essential work of fracture criterion - References
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