The Challenge of Tribology is to
Control Friction and Wear

Friction and wear have negative effects on the running of
mechanical systems, with huge economic impact.  H.E.F. can
help you gain better control over wear and friction.

Consequences of Friction and Wear

Friction and wear have detrimental effects on the running
behavior of components, assemblies and machines. 
Some examples are mentioned here –

FRICTION

Friction
Energy dissipation

Generation of heat and noise

WEAR

Material removal

Vibrations, leaks, debris production:

• Pollution due to leaks and debris
• Filling holes and jamming screw threads
• Difficulties in dismantling machines

SURFACE DEGRADATION

• Compromise in component properties
• Erratic friction behavior
• Degradation of parts’ exterior

SEIZURE

System failure

Economic Impact of Friction and Wear

Friction and wear generate enormous energy losses, loss of material,
and huge maintenance costs.  Their eventual economic impact is tremendous.
According to a recent study, the cost of wear is approximately 3% of GDP. 
The cost of corrosion is estimated at 4% of GDP.

It is also estimated that 0.7% of energy cost in the USA is dissipated in
the piston/ring/cylinder bore system of internal combustion engines.

Advantages of Better Control of Friction and Wear

Improving the understanding of friction and wear eventually increases
system performance, service life, reliability and maintenance:

• Reducing wear, vibrations and noise
• Extending conditions of use
  (maximal speed, admissible contact pressure)
• Delaying surface degradation
• Reducing lubrication
• Reducing maintenance costs

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