Sree Raj

That's because most of the failures occur by tensile rather than compressive stress.

Pre tensile stress is given so that there 'll be a residual stress forming inside the material. Further when the material is to fail,it has to overcome the residual stress/...

Thanks!

How tool wear can be accounted?

Instrument used to measure temperatures about 1000degree Celsius (in engine etc) ?

Instrument used to measure temperatures about 1000degree Celsius (in engine etc) ?

Instruments used to measure tool wear (cutting tools, crater wear) ?

#-Link-Snipped-# This one too!

A.V.RamaniWhere did you post them?Thanks! Other questions too.

A.V.RamaniIn the early days of mech engineering many terms were loosely used. As Tamilazhagan says above it is more a convention than actual engineering definition. This attached ANSI document may...