Composite Theory
Composite theory is a framework used to understand the behavior of composite materials, which are made by combining two or more constituent materials with different properties. The theory takes into account the interactions between the materials at a microstructural level to predict the overall mechanical, thermal, and electrical properties of the composite. It is essential for designing and engineering advanced materials for various applications.
3 Key excerpts on "Composite Theory"
- Shashanka Rajendrachari, Orhan Uzun(Authors)
- 2021(Publication Date)
- Bentham Science Publishers(Publisher)
...Composites R. Shashanka, Orhan Uzun Abstract In this chapter, we have discussed the basics of composite materials, types, properties, and applications. Students will learn the fundamentals of composite materials and their importance in many engineering fields. Composite materials can be defined as “the combination of a hard and a soft material” or “these are the materials composed of different parts with specific ratios”. This chapter comprises of the advantages and disadvantages of composites and also focuses on different fabrication methods of preparing composites. Fundamentals of nanocomposites and their recent improvements are also added in this chapter. Keywords: Ceramic matrix, Composites, Fabrication, Fibers, Fiber-reinforced plastics, Fillers, Laminates, Metal matrix, Nanocomposites, Polymer matrix, Reinforcements, Resin. 1. INTRODUCTION In recent years, composite materials are becoming more popular due to the possibility of fabricating high-tech materials for modern applications. Composites (see Fig. 1) are revolutionary materials that have been used in various engineering fields for more than 60 years [ 1, 2 ]. The important advantages of composite materials over other bulk materials are their high strength to low weight ratios, their stiffness combined with low density [ 3 ]. The reinforcing phases are always harder, stronger than the matrix constituent, and impart greater strength and stiffness to the matrix. Composite is a future technology, and therefore, more and more research work is going on all over the world to improve the microstructure, mechanical properties, electrical properties, corrosion resistance properties, and surface properties. One of the earliest man-made composite materials are bricks made up of straw and mud for constructing buildings during the Egyptian era, as drawn in their tomb paintings [ 1 ]...
- George Chatzigeorgiou, Nicholas Charalambakis, Yves Chemisky, Fodil Meraghni(Authors)
- 2018(Publication Date)
- ISTE Press - Elsevier(Publisher)
...5 Composites with Periodic Structure Abstract Material science has grown tremendously in the recent years to meet the extensive needs of several engineering applications. The automotive and aerospace industries require novel, innovative and multifunctional composite materials that can be utilized in complicated structures with high demands in strength, durability and long lifetime during repeated loading cycles. Keywords Conservation laws; Constitutive law; 3-D analysis; 1-D problem; Entropy inequality; Linearized, incremental formulation; Macroscale problem; Thermomechanical processes; Unit cell problem Material science has grown tremendously in the recent years to meet the extensive needs of several engineering applications. The automotive and aerospace industries require novel, innovative and multifunctional composite materials that can be utilized in complicated structures with high demands in strength, durability and long lifetime during repeated loading cycles. To match those high requirements, composites are frequently exposed in regimes where dissipative phenomena like viscoelasticity, viscoplasticity or plasticity occur. Such deformation mechanisms are often accompanied by significant temperature increases, which influences in return the material’s response. The thermomechanical couplings play a key role in thermoplastics operating in temperature ranges close to the glass transition zones, as well as in metals during phase transformation. In addition, thermal and mechanical fields are strongly connected in the case of fatigue. Generally, fatigue is a complicated phenomenon that depends not only on the stress state, but also on the energy dissipation that occurs during inelastic mechanisms [ BEN 15 ]. A proper study of the fatigue of a structure requires to account for the energy exchanges during thermomechanical loading cycles...
eBook - ePubComposite Materials
Properties, Characterisation, and Applications
- Amit Sachdeva, Pramod Kumar Singh, Hee Woo Rhee, Amit Sachdeva, Pramod Kumar Singh, Hee Woo Rhee(Authors)
- 2021(Publication Date)
- CRC Press(Publisher)
...3 Properties of Composite Materials Arvind Kumar Chauhan, Amarjeet Singh, Deepak Kumar and Kuldeep Mishra Contents 3.1 Introduction 3.2 Properties of Polymer-Matrix Composites 3.2.1 Electrical Properties of Polymer Composites 3.2.2 Mechanical Properties of Polymer Composites 3.3 Properties of Ceramic-Matrix Composites 3.3.1 Electrical Properties of Ceramic-Matrix Composites 3.3.2 Mechanical Properties of Ceramic-Matrix Composites 3.4 Properties of Metal-Matrix Composites 3.5 Properties of Composite Materials used in Energy Storage/Conversion Devices 3.6 Conclusions References 3.1 Introduction Composite materials have a macroscopic structure containing two or more non-soluble materials. One old and well-known example of a composite material is mud brick, which is prepared by fire-drying mud. It has good compressive strength but poor tensile strength. Strong fibrous straw can be a good reinforcing material to be added to mud to make excellent building blocks. The straw is used to bind clay and concrete to form an admirable building material called cob. The most appropriate properties of composite materials are: High stiffness and strength across a wide temperature range High Young’s modulus Highly resistive to corrosion/oxidation Low density and light weight High thermal and electrical conductivity High wear resistance. Concrete, a mixture of small stones, cement, and sand, has good compressive strength. Its tensile strength is enhanced by adding metal rods or wires, when it is called reinforced concrete or reinforced cement concrete (Figure 3.1a). One constituent in composite materials, the reinforcing phase in the form of fibers, particles, or flakes, is embedded in the other continuous constituent, which is called the matrix. The properties of the reinforcing and matrix phases are complementary to provide the best performance of the composite material for a particular application...
