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Estonian Journal of Engineering

Method for in situ runout measurement of large rolls; pp. 28–38

Full article in PDF format | doi: 10.3176/eng.2011.1.04

Panu Kiviluoma, Esa Porkka, Jukka Pirttiniemi, Petri Kuosmanen

This work presents a method for in situ runout measurement of large cylindrical rotors, such as paper machine rolls. The method is based on an acceleration sensor attached to a sliding probe which is held against the rotating surface. Measured acceleration signal is averaged and double-integrated using a computer to get radial surface displacement, i.e., runout. Laboratory tests showed that, with this method, it is possible to measure runout with accuracy in the scale of a few micrometers. Measurements showed that, by using this method, it is possible to detect and measure phenomena like thermal bending or so-called polygon effect in running thermo rolls. These pheno­mena have not been reported to have been measured in situ before.

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