Fatigue in Mechanical Engineering
There are two main forms of fatigue on the metals, the mechanical fatigue and the thermal fatigues. Both of these fatigues result in weakening and failure of the metals at the localized areas which undergo the metallurgical changes due to applied cyclical stresses well below the plastic deformation stress values, for specified period of time. Most vulnerable are the unsupported small bore piping attached to the system containing pumps and compressors which induce the cyclic stress on the adjacent structures. The anchoring points of the lines which shake due to liquid hammering and frequent rapid flow like relief piping are also affected by fatigue. Since all forms of fatigues are the metallurgical changes, the earlier detection of the … Read more
