Using Monte Carlo simulation for estimation of uncertainty of four point roundness measurements of large rotors

Thomas Widmaier, Björn Hemming, Jari Juhanko, Petri Kuosmanen, Veli-Pekka Esala, Antti Lassila, Pasi Laukkanen

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionProfessional

Abstrakti

Large-scale rotors in the paper and steel industry are called rolls. Rolls are reground at regular intervals and roundness measurements are made throughout the machining process. Measurement systems for roundness and diameter variation of large rolls (diameter <2000 mm) are available on the market, and generally use two to four sensors and a roundness measurement algorithm. These methods are intended to separate roundness of the rotor from its movement. The hybrid four-point method has improved accuracy, even for harmonic component amplitudes. For reliable measurement results, every measurement should be traceable with an estimation of measurement uncertainty. In this paper, the Monte-Carlo method is used for uncertainty evaluation of the harmonic components of the measured roundness profile under typical industrial conditions. According to the evaluation, the standard uncertainties for the harmonic amplitudes with the hybrid method are below 0.5 textmum for the even harmonics and from 1.5 textmum to 2.5 textmum for the odd harmonics, when the standard uncertainty for the four probes is 0.3 textmum each. The standard uncertainty for roundness deviation is 3.3 textmum.
AlkuperäiskieliEnglanti
OtsikkoProceedings of the 59th Ilmenau Scientific Colloquium "Engineering for a Changing World"
KustantajaIlmedia
Sivumäärä8
Vuosikerta59
TilaJulkaistu - 1 lokakuuta 2017
OKM-julkaisutyyppiD3 Ammatillisen konferenssin julkaisusarja
TapahtumaIlmenau Scientific Colloquium - Ilmenau, Saksa
Kesto: 11 syyskuuta 201715 syyskuuta 2017
Konferenssinumero: 59
https://www.tu-ilmenau.de/iwk/

Conference

ConferenceIlmenau Scientific Colloquium
MaaSaksa
KaupunkiIlmenau
Ajanjakso11/09/201715/09/2017
www-osoite

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