How to Evaluate the Gains: In theory:These are the experimental vehicles;Ford,Peugeot (1979).As com- pared with the metallic pieces,composite parts have obtained mass reduction of 20%to 30%on the pieces for the body. 40%to 60%on the mechanical pieces Example:Ford vehicle,which has a mass in metallic construction of 617 kg and a mass in composite construction of 300 kg for a global gain of 52%.It is convenient to consider this case as "technological prowess"far from the priority of economic constraints. In practice:Over the past years,an increasing number of pieces made of glass fibers/organic matrices have been introduced.The following list contains pieces that are in actual service or in development. Components for the body ■Motor cap ■Hood cover ■Hatchback door ■Fenders ■Roofs ■Opening roof ■Doors ■Shock absorber ■Interior components ■Seat frames Side panel and central consoles ■Holders Components under the hood ■Headlight supports ■Oil tanks ■Direction columns Cover for cylinder heads Cover for distributor ■Transmission shafts Motor and gearbox parts Components for the structure ■Chassis parts ■Leaf springs ■Floor elements Figure 8.5 shows the importance of the volumes actually occupied by the composites in an automobile. Example:Automobile BX Citroen (FRA)1983 with a total mass of 885 kg. Many of the molded pieces made of glass/resin composites as shown in Figure 8.6 are now commonly used by the automobile manufacturers.We note in particular the two elements below,the importance and large volume production of which (rate of production of more than 1000 pieces per day),indicate a significant penetration of composites in the manufacturing of automobiles. 2003 by CRC Press LLCHow to Evaluate the Gains: In theory: These are the experimental vehicles; Ford, Peugeot (1979). As com￾pared with the metallic pieces, composite parts have obtained mass reduction of
20% to 30% on the pieces for the body.
40% to 60% on the mechanical pieces Example: Ford vehicle, which has a mass in metallic construction of 617 kg and a mass in composite construction of 300 kg for a global gain of 52%. It is convenient to consider this case as “technological prowess” far from the priority of economic constraints. In practice: Over the past years, an increasing number of pieces made of glass fibers/organic matrices have been introduced. The following list contains pieces that are in actual service or in development.
Components for the body
Motor cap
Hood cover
Hatchback door
Fenders
Roofs
Opening roof
Doors
Shock absorber
Interior components
Seat frames
Side panel and central consoles
Holders
Components under the hood
Headlight supports
Oil tanks
Direction columns
Cover for cylinder heads
Cover for distributor
Transmission shafts
Motor and gearbox parts
Components for the structure
Chassis parts
Leaf springs
Floor elements Figure 8.5 shows the importance of the volumes actually occupied by the composites in an automobile. Example: Automobile BX Citroen (FRA)1983 with a total mass of 885 kg. Many of the molded pieces made of glass/resin composites as shown in Figure 8.6 are now commonly used by the automobile manufacturers. We note in particular the two elements below, the importance and large volume production of which (rate of production of more than 1000 pieces per day), indicate a significant penetration of composites in the manufacturing of automobiles. TX846_Frame_C08 Page 184 Monday, November 18, 2002 12:22 PM © 2003 by CRC Press LLC