Machining of Polymer Composites by Jamal Ahmad

By Jamal Ahmad

Machining of Polymer Composites is an critical reference/source publication for strategy layout, software and creation engineers in composite production and will be used as a textbook for graduate and top point undergraduate classes in production and mechanical engineering.

Drawing upon years of useful event and utilizing various examples, Jamal Ahmad presents the reader with a complete medical remedy of the idea of machining because it applies to fiber bolstered polymer composites (FRP), including:

  • Mechanics of chip formation and the severe impression of composite structure on chip formation mode, slicing forces and floor quality

  • The phenomena of device put on and an research of instrument fabrics and gear put on mechanisms in machining of FRP composites

  • Machinability of FRP composites by means of conventional and nontraditional equipment together with turning, milling, drilling, abrasive, abrasive waterjet and laser machining

  • The factor of overall healthiness and safeguard in machining FRP composites

Machining of Polymer Composites is a must-have ebook for practising mechanical, production and construction engineers, venture managers and store ground technicians

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Sample text

This results in alignment of molecules along the fiber direction and hence imparting higher strength and stiffness along the fiber direction. This is especially the case for carbon and aramid fibers. Glass is an amorphous material and glass fibers are isotropic. Glass fibers are by far the most widely used reinforcement material because of their low cost and good mechanical and thermal properties. Carbon and aramid fibers offer much better mechanical properties at higher cost. Therefore, their use is mostly in advanced composites for the aircraft, aerospace, and defense industries.

7. When would aramid fibers be used in preference to carbon fibers? 8. Describe the differences between thermosets and thermoplastics in both molecular structure and method of curing or processing. 9. Distinguish between a finely extruded rod and a fiber (both made form the same material) in both properties and the additional processing that is done to the fiber. 10. Indicate three differences or concerns in using traditional thermoplastics processing methods with composite materials. 34 1 Introduction to Polymer Composites 11.

35a) The magnitude of hm is typically an order of magnitude smaller than the depth of cut ae and is much less than Lc . In this case the shape of the undeformed chip is nearly triangular. In order to calculate the undeformed chip thickness an estimate of the grain spacing, Lg is needed. A number of methods have been devised to measure wheel topography and obtain information on grain density C. 35b) where r is the ratio of effective undeformed chip width to the average chip thickness, ha . 5hm .

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