Measuring torque when installing threaded fasteners is the best indicator of future joint performance, right? Actually, bolt tension is a better performance indicator, but measuring torque is far ...

I'm trying to calculate the friction torque between to flat surfaces rotating against one another, and can't find any examples of this particular problem for guidance--only for rotating cylinders.

1.1 What is friction? Take this everyday example: when a coffee mug rests on a flat table, the kinetic frictional force is zero. There is no force trying to move the mug across the table, so there is ...