1. Materials Selection of Disc Brake Pads Benjamin Narvaez MEEN 3344

2. Operation of Disc Brakes Brake pedal is depressed pushing fluid through the system A piston is then forced out Brake pads are forced together Friction between pads and rotor cause the car to slow down

3. Factors in Material Selection Coefficient of friction Heat fade Thermal expansion Hardness

4. Brake Pad Materials Organic and Asbestos - health issues, softer composition, low heat fade resistance, small range of use Semi-Metallic - 40% metal by content wt(steel wool, iron,) hard surface, high friction Towing, larger vehicles Low heat concern, wears rotors fastest Ceramic Ceramic fibers, <15% metal by wt. Ct. High hardness, more advanced technology High heat operation, less heat fade Long life

5. Text and Photo References http://www.boschusa.com/AutoParts/FAQs/BrakePads/ www.wilwood.com www.howstuffworks.com http://www.e-z.net/~ts/ts/Brakfade.htm