Critical Bearing Area for Bolted Joints, Part 1 – 3/15/21
Engineers occasionally run across situations where bolted joints have “loosened” even when head and/or nut positions have been marked with scratches or paint. This is known as “non-rotational loosening”. Several things can cause that. First of all, the components within the grip of the fastener must be checked for yielding (embedment or creep), causing “joint …