Why do clutches and brakes require a high coefficient of friction?

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SUMMARY

Clutches and brakes require a high coefficient of friction to prevent slippage and ensure effective engagement. The discussion highlights the distinction between kinetic and static coefficients of friction, emphasizing that a high static coefficient is crucial for clutches to function properly. Conversely, applications such as lubrication in compression testing and cutting tools benefit from materials with a low coefficient of friction to facilitate smooth movement and reduce wear.

PREREQUISITES
  • Understanding of static and kinetic coefficients of friction
  • Familiarity with clutch and brake mechanisms
  • Knowledge of material properties in engineering applications
  • Basic principles of lubrication in mechanical systems
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  • Research the role of static vs. kinetic friction in mechanical design
  • Explore materials used in high-friction applications like clutches and brakes
  • Learn about lubrication techniques for reducing friction in engineering
  • Investigate the impact of friction on wear in cutting tools and bearings
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Mechanical engineers, automotive engineers, materials scientists, and anyone involved in the design and application of friction-based systems.

zubbylight
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Hi all
*Pls can somebody tell me why clutches and brakes need high coefficient of friction
*also i need applications where engineers need to have materials having low values for the coefficient of friction
Thanks
 
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Well, for a clutch, you don't want it to slip. If it slips it isn't doing its job so you would want a high coefficient of friction.

There are two types of coefficients of friction. One is kinetic and the other is static.

Any situation in which you would want to have something slide with ease would be an application for a low coefficient of friction.

Thanks
Matt
 
Low coefficient of friction, engineering...hair conditioner, lubrication at the sample/platen interface in compression testing, relief and rake faces on cutting tools, bearings...plenty of things!
 

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