scope:

This guideline provides an overview of the vibration patterns for excitation originating in unbalances, misassembly, bearing defects and damage to rotating parts - in other words, from the kinds of excitation which can occur in all types of machines which have rotating masses, irrespective of their size, output and speed. Please refer to VDI 3839 Part 1 for information on the terms from metrology and analysis which are used here, on the measurement and analysis equipment referred to or recommended, and on special analytical procedures. In addition to the overview provided in the present Part 2, typical vibration patterns for excitation originating in the physical operating principle, in the designs and operating methods of the various machine types will be found in Part 3 to Part 8. Subsequent parts of the VDI 3839 series of guidelines will in each case function as supplements to this guideline. They should be used when you need to interpret the vibration of a special type of machine.