http://www.youtube.com/watch?v=xjph9aopU7A&feature=share&noredirect=1

the power of friction has made the disc glow red at 1.40.
just imagine the tremendous amount of heat that is generated.

From the description :

QuoteIn a novel new video, Boeing tests the worn-out — as in no material, just metal — brakes of a fully-loaded 747-8 Freighter by going through a pilot's worst-case liftoff scenario: aborting a takeoff.

The successful result: 2,500-degrees-Fahrenheit brake pads, totally destroyed tires and plenty of tarmac left on the runway.

Quote from: saahil on October 30, 2012, 07:27:14 PM
the power of friction has made the disc glow red at 1.41.
just imagine the tremendous amount of heat that is generated.

For what it's worth, the brake discs in a Formula F1 car reach similar temperatures several hundred times in a typical race scenario. they can - and do - slow down the car from 300+ km/hr to less than 100 in a little over one second! The  forces involved are very high , over 4G.

have a look at the steam formed due to water evaporation from the discs at 2.22.

form this anwar sir i just recalled a similar video.
have a look.

Quote from: sushil_anand on October 30, 2012, 08:37:16 PM
For what it's worth, the brake discs in a Formula F1 car reach similar temperatures several hundred times in a typical race scenario. they can - and do - slow down the car from 300+ km/hr to less than 100 in a little over one second! The  forces involved are very high , over 4G.

Thanks for saying what I wanted to say.

did that " POWER OF FRICTION" thing in our college lathe... its called FRICTION WELDING...

thats hell of a het produced.. lucky to do with low carbon steel.. could not imagine doing that with HSS or tougher metals