Advantage And Disadvantage Of Composites

10006 Words41 Pages
CHAPTER 1 INTRODUCTION Composite materials are the engineering materials made from two or more constituent materials they remain separate and distinct on a macroscopic level but forming a single component or Composites can defined as materials that consist of two more chemically and physically different phases separated by a distinct interface(matrix phase and dispersed phase). The different systems are combined judiciously to achieve a component with more and more useful structural or functional properties non-attainable by any of the constituent alone. In the composites usually Matrix phase is the primary or base phase having a continuous character or continuous molecular chain. But these Matrixes are usually less hard and more ductile phase. In composites it holds the dispersed (reinforcing) phase, shares a load with it. The Dispersed phase is encapsulated in the matrix in a discontinuous form called a secondary phase. This Secondary phase…show more content…
Determine inter-laminar shear strength. Determine damage tolerance of composites. Determine in-plane shear strength. Determine the processibility of composites. Determine heat resistance of composites. The needs or desired properties of the matrix which are important for a composite structure are as follows: Reduced moisture absorption and Low shrinkage. Low coefficient of thermal expansion. Good flow characteristics so that it penetrates the fibre bundles completely and eliminates voids during the compacting/curing process. Must be elastic to transfer load to fibres. Reasonable strength, modulus and elongation (elongation should be greater than fibre). Strength at elevated temperature (depending on application). High temperature capability (depending on application). Excellent chemical resistance (depending on application). Should be easily processable into the final composite shape. Good dimensional stability (maintains its
Get Access