Mechanical vibration and shock — Measurement of vibration power flow from machines into connected support structures — Part 2: Indirect method

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Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

01-23-2012

Publisher

International Organization for Standardization

Preview

This part of ISO 18312 specifies a method for evaluating the vibration power emitted by machines or pipelines

(referred to hereinafter as machines) on to supporting structures to which the machines are connected

through vibration isolators. This part of ISO 18312 also 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 two sets

of velocity (or acceleration) transducers mounted at the isolator connection points, one set on the machine

side (input) and the other on the foundation side (output). This method is applicable for machines under the

assumption that their vibration can be characterized by a stationary random process.

The components of emitted vibration power are computed using the cross-spectra of the two sets of velocity in

narrow band (or one third-octave) and the dynamic stiffness characteristics of the isolator over the frequency

range of interest.

The upper frequency limits of this method are established in this part of ISO 18312.

This part of ISO 18312 can be used for:

a) evaluating a machinery system from isolator design concept;

b) obtaining data for preparation of technical requirements for allowable machine vibration power emission;

c) determining appropriate and cost-effective vibration control procedures;

d) solving diagnostics issues.

DevelopmentNote	Supersedes ISO/DIS 18312-2. (01/2012)
DocumentType	Standard
Pages	19
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
BS ISO 18312-2:2012	Identical

ISO 2041:2009	Mechanical vibration, shock and condition monitoring Vocabulary
ISO 10846-1:2008	Acoustics and vibration — Laboratory measurement of vibro-acoustic transfer properties of resilient elements — Part 1: Principles and guidelines
ISO 5348:1998	Mechanical vibration and shock Mechanical mounting of accelerometers
ISO 10846-2:2008	Acoustics and vibration — Laboratory measurement of vibro-acoustic transfer properties of resilient elements — Part 2: Direct method for determination of the dynamic stiffness of resilient supports for translatory motion