Optical sensor for oil film pressure measurement in journal bearings

Helena Ronkainen, Ari Hokkanen, Markku Kapulainen, A. Lehto, J. Martikainen, I. Stuns, A. Valkonen, Simo Varjus, Juha Virtanen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    In operation of journal bearings, the oil film pressure is one of the key parameters. Until now, measuring of the oil film pressure has been a demanding or even unfeasible task, especially in journal bearings carrying dynamic loads. A new approach that has been developed for experimental determination of the oil film pressure is based on optical technique. In the sensor design the optical fibre technique is utilized and the sensor is integrated in the sliding surface of the bearing providing the possibility to measure the actual oil film pressure under load. The finite element method (FEM) calculations have been used for optimizing the design of the sensor and for checking the structural characteristics of the design. The optical sensor was integrated in a hydrodynamic journal bearing made of bronze. A versatile bearing test rig was used for testing the journal bearing with integrated optical sensor. The tests were carried out with both static and dynamic loading. The oil film pressure was measured with different loads and speeds and the data was compared with simulated one. The results showed that the optical sensor was capable of measuring the oil film pressure in journal bearing at real operating conditions and the sensitivity of the sensor was good enough to verify the speed and load effects on pressure. According to this work, it is possible to increase the knowledge of true operating conditions of journal bearings by using the optical oil film pressure sensor. The knowledge can be utilized in the development work of safer and more efficient machines and engines with journal bearing carrying high and dynamic loads. The optical sensor can be used also in other applications for smart control of pressure.
    Original languageEnglish
    Title of host publicationProceedings of NORDTRIB 2008
    EditorsJ. Kleemola, A. Lehtovaara
    Place of PublicationTampere
    PublisherTampere University of Technology
    Number of pages12
    ISBN (Electronic)978-952-15195-9-8
    Publication statusPublished - 2008
    MoE publication typeA4 Article in a conference publication
    Event13th Nordic Symposium on Tribology, NORDTRIB 2008 - Tampere, Finland
    Duration: 10 Jun 200813 Jun 2008

    Conference

    Conference13th Nordic Symposium on Tribology, NORDTRIB 2008
    Abbreviated titleNORDTRIB 2008
    CountryFinland
    CityTampere
    Period10/06/0813/06/08

    Fingerprint

    Journal bearings
    Optical sensors
    Pressure measurement
    Bearings (structural)
    Sensors
    Dynamic loads
    Oils
    Bronze
    Pressure sensors
    Optical fibers
    Hydrodynamics
    Engines
    Finite element method
    Testing

    Keywords

    • achslager
    • bronze
    • hydrodynamische schmierung
    • ölfilm
    • druckverteilung
    • druckmessung
    • gleitebene
    • optischer sensor
    • design-optimierung
    • finite-elemente-methode
    • prüfstand
    • druckregelung

    Cite this

    Ronkainen, H., Hokkanen, A., Kapulainen, M., Lehto, A., Martikainen, J., Stuns, I., ... Virtanen, J. (2008). Optical sensor for oil film pressure measurement in journal bearings. In J. Kleemola, & A. Lehtovaara (Eds.), Proceedings of NORDTRIB 2008 Tampere: Tampere University of Technology.
    Ronkainen, Helena ; Hokkanen, Ari ; Kapulainen, Markku ; Lehto, A. ; Martikainen, J. ; Stuns, I. ; Valkonen, A. ; Varjus, Simo ; Virtanen, Juha. / Optical sensor for oil film pressure measurement in journal bearings. Proceedings of NORDTRIB 2008. editor / J. Kleemola ; A. Lehtovaara. Tampere : Tampere University of Technology, 2008.
    @inproceedings{cbd0a1004cb44f23a9b28c88817f082c,
    title = "Optical sensor for oil film pressure measurement in journal bearings",
    abstract = "In operation of journal bearings, the oil film pressure is one of the key parameters. Until now, measuring of the oil film pressure has been a demanding or even unfeasible task, especially in journal bearings carrying dynamic loads. A new approach that has been developed for experimental determination of the oil film pressure is based on optical technique. In the sensor design the optical fibre technique is utilized and the sensor is integrated in the sliding surface of the bearing providing the possibility to measure the actual oil film pressure under load. The finite element method (FEM) calculations have been used for optimizing the design of the sensor and for checking the structural characteristics of the design. The optical sensor was integrated in a hydrodynamic journal bearing made of bronze. A versatile bearing test rig was used for testing the journal bearing with integrated optical sensor. The tests were carried out with both static and dynamic loading. The oil film pressure was measured with different loads and speeds and the data was compared with simulated one. The results showed that the optical sensor was capable of measuring the oil film pressure in journal bearing at real operating conditions and the sensitivity of the sensor was good enough to verify the speed and load effects on pressure. According to this work, it is possible to increase the knowledge of true operating conditions of journal bearings by using the optical oil film pressure sensor. The knowledge can be utilized in the development work of safer and more efficient machines and engines with journal bearing carrying high and dynamic loads. The optical sensor can be used also in other applications for smart control of pressure.",
    keywords = "achslager, bronze, hydrodynamische schmierung, {\"o}lfilm, druckverteilung, druckmessung, gleitebene, optischer sensor, design-optimierung, finite-elemente-methode, pr{\"u}fstand, druckregelung",
    author = "Helena Ronkainen and Ari Hokkanen and Markku Kapulainen and A. Lehto and J. Martikainen and I. Stuns and A. Valkonen and Simo Varjus and Juha Virtanen",
    year = "2008",
    language = "English",
    editor = "J. Kleemola and A. Lehtovaara",
    booktitle = "Proceedings of NORDTRIB 2008",
    publisher = "Tampere University of Technology",
    address = "Finland",

    }

    Ronkainen, H, Hokkanen, A, Kapulainen, M, Lehto, A, Martikainen, J, Stuns, I, Valkonen, A, Varjus, S & Virtanen, J 2008, Optical sensor for oil film pressure measurement in journal bearings. in J Kleemola & A Lehtovaara (eds), Proceedings of NORDTRIB 2008. Tampere University of Technology, Tampere, 13th Nordic Symposium on Tribology, NORDTRIB 2008, Tampere, Finland, 10/06/08.

    Optical sensor for oil film pressure measurement in journal bearings. / Ronkainen, Helena; Hokkanen, Ari; Kapulainen, Markku; Lehto, A.; Martikainen, J.; Stuns, I.; Valkonen, A.; Varjus, Simo; Virtanen, Juha.

    Proceedings of NORDTRIB 2008. ed. / J. Kleemola; A. Lehtovaara. Tampere : Tampere University of Technology, 2008.

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    TY - GEN

    T1 - Optical sensor for oil film pressure measurement in journal bearings

    AU - Ronkainen, Helena

    AU - Hokkanen, Ari

    AU - Kapulainen, Markku

    AU - Lehto, A.

    AU - Martikainen, J.

    AU - Stuns, I.

    AU - Valkonen, A.

    AU - Varjus, Simo

    AU - Virtanen, Juha

    PY - 2008

    Y1 - 2008

    N2 - In operation of journal bearings, the oil film pressure is one of the key parameters. Until now, measuring of the oil film pressure has been a demanding or even unfeasible task, especially in journal bearings carrying dynamic loads. A new approach that has been developed for experimental determination of the oil film pressure is based on optical technique. In the sensor design the optical fibre technique is utilized and the sensor is integrated in the sliding surface of the bearing providing the possibility to measure the actual oil film pressure under load. The finite element method (FEM) calculations have been used for optimizing the design of the sensor and for checking the structural characteristics of the design. The optical sensor was integrated in a hydrodynamic journal bearing made of bronze. A versatile bearing test rig was used for testing the journal bearing with integrated optical sensor. The tests were carried out with both static and dynamic loading. The oil film pressure was measured with different loads and speeds and the data was compared with simulated one. The results showed that the optical sensor was capable of measuring the oil film pressure in journal bearing at real operating conditions and the sensitivity of the sensor was good enough to verify the speed and load effects on pressure. According to this work, it is possible to increase the knowledge of true operating conditions of journal bearings by using the optical oil film pressure sensor. The knowledge can be utilized in the development work of safer and more efficient machines and engines with journal bearing carrying high and dynamic loads. The optical sensor can be used also in other applications for smart control of pressure.

    AB - In operation of journal bearings, the oil film pressure is one of the key parameters. Until now, measuring of the oil film pressure has been a demanding or even unfeasible task, especially in journal bearings carrying dynamic loads. A new approach that has been developed for experimental determination of the oil film pressure is based on optical technique. In the sensor design the optical fibre technique is utilized and the sensor is integrated in the sliding surface of the bearing providing the possibility to measure the actual oil film pressure under load. The finite element method (FEM) calculations have been used for optimizing the design of the sensor and for checking the structural characteristics of the design. The optical sensor was integrated in a hydrodynamic journal bearing made of bronze. A versatile bearing test rig was used for testing the journal bearing with integrated optical sensor. The tests were carried out with both static and dynamic loading. The oil film pressure was measured with different loads and speeds and the data was compared with simulated one. The results showed that the optical sensor was capable of measuring the oil film pressure in journal bearing at real operating conditions and the sensitivity of the sensor was good enough to verify the speed and load effects on pressure. According to this work, it is possible to increase the knowledge of true operating conditions of journal bearings by using the optical oil film pressure sensor. The knowledge can be utilized in the development work of safer and more efficient machines and engines with journal bearing carrying high and dynamic loads. The optical sensor can be used also in other applications for smart control of pressure.

    KW - achslager

    KW - bronze

    KW - hydrodynamische schmierung

    KW - ölfilm

    KW - druckverteilung

    KW - druckmessung

    KW - gleitebene

    KW - optischer sensor

    KW - design-optimierung

    KW - finite-elemente-methode

    KW - prüfstand

    KW - druckregelung

    M3 - Conference article in proceedings

    BT - Proceedings of NORDTRIB 2008

    A2 - Kleemola, J.

    A2 - Lehtovaara, A.

    PB - Tampere University of Technology

    CY - Tampere

    ER -

    Ronkainen H, Hokkanen A, Kapulainen M, Lehto A, Martikainen J, Stuns I et al. Optical sensor for oil film pressure measurement in journal bearings. In Kleemola J, Lehtovaara A, editors, Proceedings of NORDTRIB 2008. Tampere: Tampere University of Technology. 2008