COMPOSITE MATERIALS

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Recommended: Characteristics of composites

In a composite material the constituents are arranged generally with the reinforcement phase embedded in the matrix phase. Due to a composite being essentially a mixture between the reinforcement phase and the matrix there is no intermolecular bonding between the two, however, as in the case of fibrous composites, the most mechanically efficient structure is a criss-crossed fibrous lattice suspended in a material matrix. In the case of particulate composites however, the reinforcement phase acts essentially to strengthen the matrix material adding support.

Types of Composites

Composite materials are usually classified according to the type of their reinforcement phase. The two main types of composites are fibrous composites and particulate composites, which may again be divided further.

In fibrous composites the fibres acting as the reinforcement, may be either continuous or chopped, and suspended in a material matrix.

In composites in which the reinforcement phase is composed of either chopped or discontinuous fibres, the composite may have an either random or biased orientation. They may be used to make single layer composites or lamina.

In particulate composites particles are suspended in a matrix, an example of which is concrete.

These particles may be of any shape or size and may have any configuration throughout the matrix.

There are a further two subclasses to particulates, being flake and filled/skeletal.

In flake composites particles, the reinforcement phase, with large ratios of platform area to thickness are suspended in a matrix material.

In filled/skeletal composites there is a skeletal matrix filled with a second reinforcement material.

Mechanical Properties of Composites

The mechanica...

... middle of paper ...

...al composed of two or more distinct materials[1], or constituents, with one constituent acting as the reinforcing phase and the other as the matrix.

A composite material is defined by having different macroscopic behaviours, or chemical and physical properties then its constituent materials, and has a distinct interface boundary on the microscopic level.

Works Cited

1 - http://www.merriam-webster.com/dictionary/composite

2-http://composite.about.com/od/aboutcompositesplastics/l/aa060297.htm

3 - http://www.fibersonixx.com/Composites%20101.htm

4 - http://afrodita.rcub.bg.ac.rs/~rzoran/263-276%20from%20Engineering%20Materials%202.pdf

5-http://www.scribd.com/doc/36051965/Intro-to-Composite-Materials

6-DT260-2 BSc in Industrial and Environmental Physics - Mech Properties and Materials-

CERAMICS

7-http://www.ehow.com/about_5149655_uses-composite-materials.html

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