Acoustically induced structural fatigue of piping systems

Piping systems handling high-pressure and high-pressure high-velocity steam and various process and hydrocarbon gases through a pressure-reducing del ice can produce severe acoustic vibration and metal fatigue in rite system. It has been previously shown that the acoustic fatigue of the piping syste m is governed by the relationship between fluid pressure drop and downstrea m Mach number, and the dimensionless pipe diameter/wall thickness geometry parameter. In this paper; the devised relationship is extended to cover aco ustic fatigue considerations of medium and smaller-diameter piping systems.