In this session we are going to deal with the methods to reduce and increase friction.
what are the methods used to reduce the friction?
1.using wheels
2.using ball bearings.
3.using lubricants(like graphite,oils,and someother as per use)
4.using stream lining.
5.using air cushions
6.Aucostics
by using all the above items we can reduce the friction to reduce the wear and tear of the materials using are reduced. and the science of friction and lubrication is called tribology.
Super lubricity, a recently discovered effect, has been observed in graphite. it is the substantial decrease of friction between two sliding objects, approaching zero levels. A very small amount of frictional energy would still be dissipated.and
Acoustic lubrication means the use of sound as lubricant.
And another way to reduce friction is producing vibration between the two surfaces.This can be sinusoidal vibration as used in ultrasound-assisted cutting or vibration noise, known as dither
And what increases the friction means if the usage of the above listed items gives a high friction.
what are the methods used to reduce the friction?
1.using wheels
2.using ball bearings.
3.using lubricants(like graphite,oils,and someother as per use)
4.using stream lining.
5.using air cushions
6.Aucostics
by using all the above items we can reduce the friction to reduce the wear and tear of the materials using are reduced. and the science of friction and lubrication is called tribology.
Super lubricity, a recently discovered effect, has been observed in graphite. it is the substantial decrease of friction between two sliding objects, approaching zero levels. A very small amount of frictional energy would still be dissipated.and
Acoustic lubrication means the use of sound as lubricant.
And another way to reduce friction is producing vibration between the two surfaces.This can be sinusoidal vibration as used in ultrasound-assisted cutting or vibration noise, known as dither
And what increases the friction means if the usage of the above listed items gives a high friction.
Applications
Friction is an important factor in many engineering disciplines.Transportation
- Automobile brakes inherently rely on friction, slowing a vehicle by converting its kinetic energy into heat. Incidentally, dispersing this large amount of heat safely is one technical challenge in designing brake systems.
- Rail adhesion refers to the grip wheels of a train have on the rails, see Frictional contact mechanics.
- Road slipperiness is an important design and safety factor for automobiles
- Split friction is a particularly dangerous condition arising due to varying friction on either side of a car.
- Road texture affects the interaction of tires and the driving surface.
- in welding metals
Measurement
- A tribometer is an instrument that measures friction on a surface.
- A profilograph is a device used to measure pavement surface roughness.
Household usage
- Friction is used to heat and ignite matchsticks (friction between the head of a matchstick and the rubbing surface of the match box).
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