API 618 – 619 and AIV-FIV studies
Pressure pulsations are generated by the reciprocating motion of the compressor piston and are amplified or weakened by the acoustic response of the piping system. Pressure pulsations produce oscillating forces that are called unbalanced forces. These forces, applied to a more or less flexible pipe system, generate vibrations that can lead to fatigue fractures when the cyclic stresses are too great.