Mechanical vibration. Rotor balancing - Procedures for assessing balance errors1 Scope This part of ISO 21940 specifies the requirements for the following: a) identifying errors in the unbalance measuring process of a rotor; b) assessing the identified errors; c) taking the errors into account. This part of ISO 21940 specifies balance acceptance criteria, in terms of residual unbalance, for both directly after balancing and for a subsequent check of the balance quality by the user. For the main typical errors, this part of ISO

This European Standard describes the laboratory mixing of bituminous materials for the manufacture of specimens

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prepared by the former Association of European Airlines (AEA)

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