3.2. By the type of matrix — polymer, metal, ceramic, and carbon. Composites are typically classified by the type of dispersive phase used: particle reinforced , fiber reinforced , or structural . The function of the relatively weak matrix is to bond the fibers Classification: Particle, fiber, structural woven fibers 0.5mm cross section view 0.5mm ... eg. This category has the following classifications: Linear Polymers. Review 5 on Metals, Ceramics, Polymers, and Composites Chapter 16 Understand the concept of composite Understand classification of composites by matrix materials Understand classification of composites by reinforcement type Understand the major improvement in properties of … In addition, there are the composites, combinations of two or more of the above three basic material classes. This scheme is based primarily on chemical makeup and atomic structure, and most materials fall into one distinct grouping or another, although there are some intermediates. Both the reinforcement type and the matrix af-fect processing. polymer matrix composite provides strength and stiffness that are lacking in the matrix. The major composite classes include Organic Matrix Composites (OMCs), Metal Matrix Composites (MMCs) and Ceramic Matrix Composites (CMCs). Natural. Trans. Polymer dispersive phases are typically used to increase the modulus of elasticity, yield strength, tensile strength, and/or provide stability over the life of the product. The classifications according to types of rein-forcement are particulate composites (composed of particles), fibrous composites 3.1.2. Polymer Matrix Composite ( PMC ) 3.1.1. very popular due to its low cost and simple fabrication methods. 1.3. two types of polymer matrices are shown: ther-mosets and thermoplastics. Classification of Composites Composites are classified 1. Classification of Composites On the basis of matrix phase, composites can be classified into metal matrix composites (MMCs), ceramic matrix composites (CMCs), and polymer matrix composites (PMCs) (Figure 1.1) [3]. Composite Benefits fiber-reinf un-reinf particle-reinf Force • PMCs: Increased E/r E(GPa).1 G=3E/8 1 10 102 103 metal/ metal alloys polymers PMCs ceramics Chapter 16 -25 Bend displacement K=E Density, r [mg/m3].1 .3 1 3 10 30.01 Adapted from T.G. PVC, i.e. Nieh, "Creep rupture of a silicon-carbide reinforced aluminum composite", Metall. discontinuous-fiber composites are used where cost is the main driver and strength and stiffness are less important. CLASSIFICATION OF COMPOSITES 3.1. The term organic matrix composite is generally assumed to include two classes of composites, namely Polymer Matrix Composites (PMCs) and carbon matrix composites commonly referred to as carbon-carbon composites. * * Reinforcement (fibre/ filler) 3.2.1. classifications: metals, ceramics, and polymers. Classification of Polymers based on the Structure of the Monomer Chain. poly-vinyl chloride is largely used for making pipes and electric cables is an example of a linear polymer. thermoplastic polymer Composite will fail at lower fracture strain If we assume that strain-to-failure of fiber is less than strain-to-failure of matrix as is most common: i.e. Use of non reinforced polymers as structure materials is limited by its mechanical properties. the major processing routes for polymer matrix composites are shown in Fig. The com-posite is designed so that the mechanical loads to which the structure is subjected in service are supported by the reinforcement. 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