ISO 18312-1:2012 PDF

Scope: This part of ISO 18312 specifies a method for evaluating the vibration power emitted by machines or pipelines, referred to hereinafter as machines, under operational conditions on to supporting structures to which the machines are directly connected via bolted joints. This part of ISO 18312 specifies the method for evaluating the vibration power components emitted in the six degrees of freedom of a Cartesian coordinate system at each joint, i.e. three translations and three rotations. The vibration power is determined by processing the signals from force and velocity (or acceleration) transducers mounted on to the bolted joints under operational conditions of interest. This method is applicable for machines under the assumption that their vibration can be characterized by a stationary random process. This direct method assumes that the supporting structures are adequately rigid and, hence, it is not applicable to cases where the foundation or supporting structures are resilient, which will potentially go into a state of resonance within the frequency range of interest. Practical frequency limits of the method are specified in this part of ISO 18312. This part of ISO 18312 can be used in operational conditions for: a) specification of vibration power emission of machines at the (bolted) joints; b) identification of vibration power severity; c) resolving diagnostics issues; d) planning vibration control measures.

ISO 18312-1:2012 Referenced Document

ISO 2041 Mechanical vibration, shock and condition monitoring - Vocabulary*， 2018-10-01 Update
ISO 5348 Mechanical vibration and shock - Mechanical mounting of accelerometers*， 2020-12-31 Update

2012 ISO 18312-1:2012 Mechanical vibration and shock - Measurement of vibration power flow from machines into connected support structures - Part 1: Direct method