Mechanical vibration. Rotor balancing - Description and evaluation of balancing machines1 Scope This part of ISO 21940 specifies requirements for evaluating the performance of machines for balancing rotating components by the following tests: a) test for minimum achievable residual unbalance, Umar test; b) test for unbalance reduction ratio, URR test; c) test for couple unbalance interference on single plane machines; d) compensator test. These tests are performed during acceptance of a balancing machine and also later, on a periodic

ISO 945-4 specifies a test method for evaluating nodularity in spheroidal graphite cast irons by comparative visual analysis and image analysis techniques

c) For boilers and burners delivered separately and assembled on site:

What is ISO/TR 19664- Guidance and terminology for the assessment of daily vibration exposure at the workplace about

as well as to pulps prepared from recycled fibres

c) pigmented and other types of plastic supports

incendiary discharges can occur during rapid filling and emptying operations

is an extensive revision and expansion of BS 6143:1981

and registration authorities as defined in the CCITT Recommendation T

guide vane bottom clearance

and all-in aggregates

This European standard supersedes BS 499-2:1980

for use in laboratory evaluations of protective structures on earth-moving machinery as defined in ISO 6165