Measurement of the bending vibration frequencies of a rotating turbo wheel using an optical fibre reflective sensor

Slavič, Janko (author), Čermelj, Primož (author), Babnik, Aleš (author), Rejec, Jožica (author), Možina, Janez (author), Boltežar, Miha (author)

An optical fibre reflective sensor was used to analyse the vibrations of a rotating turbo wheel up to 20400 rpm. The measured signal required correction because of the natural unevenness of the turbo wheel and because of the variable deflection. Because the turbo wheel was rotating the signal became distorted and so we used a special method to extract the frequencies of the vibrations from the power spectra. The analysis showed increased intensity of the first three natural frequencies with an increased speed of rotation. The experimental results match very well with those obtained by numerical computation.

• Language: English
• Keywords: rotating turbo wheel, disc, natural frequency, frequency extraction, optical fibre, distortion
• Work type: Not categorized (r6)
• Tipology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2002
• Number of pages: str. 477-482
• Numbering: Vol. 13, no. 4
• UDC: 621.317:531/534
• ISSN on article: 0957-0233
• COBISS.SI-ID: 4901915
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Record is a part of a journal

• Title: Measurement science & technology
• Shortened title: Meas. sci. technol.
• Publisher: IOP Publishing
• ISSN: 0957-0233
• COBISS.SI-ID: 6000901