Tension Control in Bolted Joints 4
Whenever we tighten a bolt, a sequence of events takes place. By applying torque to the head, or the nut, we turn the fastener being torqued. This action stretches the bolt (similar to a spring) and creates a tension
in the bolt. In most cases it is this tension or preload that we need to make a fastening. By controlling torque, turn, or stretch, we can control the buildup of tension. The closer we approach direct control of tension, the more accurate and expensive the method will be.
