VDI 2060:2014-12

The standard serves to recognise evaluation of results of measurement around the presence of non-linear characteristics of an oscillatory system. Excitation as a possible cause of inexplicable phenomena should be ruled out, and in some cases, be a known means for identifying the cause of the non-linearity, for example, the presence of cracks or play. Other causes of studied oscillatory systems of non-linear properties, for example, can be due to manufacturing defects, discontinuities in materials, wear and breakage, influences caused by overload, non-linear characteristics of bearing elements.