mass distribution steel 75% polymers aluminum 16% textiles 9% #0.5% Figure 8.1 Use of Different Materials in Automobiles polymer mass distribution elastomers plastics (rubber) 45% 40% paints varnish in which tires:32% 15% Figure 8.2 Mass Distribution Among Polymer Materials Consequences of the introduction of composite pieces in automobiles are now well-known.They allow a number of advantages.One can find several common points with aeronautic construction.There are also disadvantages that are more specific to automobiles. ■Advantages include Lightening of the vehicles:A reduction of mass of 1 kg induces a final reduction of 1.5 kg,taking into account the consecutive lightening of the mechanical components. 2003 by CRC Press LLCConsequences of the introduction of composite pieces in automobiles are now well-known. They allow a number of advantages. One can find several common points with aeronautic construction. There are also disadvantages that are more specific to automobiles. Advantages include Lightening of the vehicles: A reduction of mass of 1 kg induces a final reduction of 1.5 kg, taking into account the consecutive lightening of the mechanical components. Figure 8.1 Use of Different Materials in Automobiles Figure 8.2 Mass Distribution Among Polymer Materials TX846_Frame_C08 Page 182 Monday, November 18, 2002 12:22 PM © 2003 by CRC Press LLC