PVC, i.e. 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. Trans. 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. polymer matrix composite provides strength and stiffness that are lacking in the matrix. the major processing routes for polymer matrix composites are shown in Fig. Paticulate Composites: Particulate Composites consist of particles immersed in matrices such as alloys and ceramics. 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 … Use of non reinforced polymers as structure materials is limited by its mechanical properties. In addition, there are the composites, combinations of two or more of the above three basic material classes. Natural. Classification of Polymers based on the Structure of the Monomer Chain. Reinforcement (fibre/ filler) 3.2.1. classifications: metals, ceramics, and polymers. This category has the following classifications: Linear Polymers. 1.3. two types of polymer matrices are shown: ther-mosets and thermoplastics. The structure of polymers containing long and straight chains fall into this category. 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. Nieh, "Creep rupture of a silicon-carbide reinforced aluminum composite", Metall. poly-vinyl chloride is largely used for making pipes and electric cables is an example of a linear polymer. 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]. Composites are typically classified by the type of dispersive phase used: particle reinforced , fiber reinforced , or structural . Both the reinforcement type and the matrix af-fect processing. 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. By the type of matrix — polymer, metal, ceramic, and carbon. The major composite classes include Organic Matrix Composites (OMCs), Metal Matrix Composites (MMCs) and Ceramic Matrix Composites (CMCs). discontinuous-fiber composites are used where cost is the main driver and strength and stiffness are less important. Classification of Composites Composites are classified 1. Classification: Particle, fiber, structural woven fibers 0.5mm cross section view 0.5mm ... eg. The function of the relatively weak matrix is to bond the fibers By the geometry of the reinforcement — particulate, flake, and fibers 2. 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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