Laboratory Tip-Timing Optical Measurement System of Rotating Blade Vibrations

  • L. Pešek
  • L. Půst
  • V. Bula
  • J. Cibulka
Original Paper


The multipoint optical system, based on fast optical elements, for precise laboratory measurements of vibration of turbine blades under rotation was proposed in the IT AS CR. The optical system registers time passages of the blades. The paper describes optical sensor, test setup with measuring and excitation systems, results of numerical simulations and the first experimental results on the bladed wheel under rotation.


Blade vibration Tip timing Optical system Magnetic excitation 



This work was supported by the research project of the Czech Science Foundation No. 16-04546S “Aero-elastic couplings and dynamic behavior of rotational periodic bodies”.


  1. 1.
    Pešek L, Vaněk F, Procházka P, Vaněk P, Cibulka J (2008) Dynamics of rotating blade disk identified by magneto-kinematic measuring system. In: Proc. ISMA2008 conference, KU Leuven, pp 1–15Google Scholar
  2. 2.
    Procházka P, Vaněk F, (2012) Non-contact methods of sensing vibrations of turbine blades. 10th international conference on vibrations in rotating machinery. Institution of Mechanical Engineers, London, pp 221–231CrossRefGoogle Scholar
  3. 3.
    Zheng Hu, Lin Jun, Chen Zhong-Sheng, Yang Yong-Min, Li Xue-Jun (2015) A non-uniformly under-sampled blade tip-timing signal reconstruction method for blade vibration monitoring, sensors (Basel). Sens MDPI Open Access J 15(2):2419–2437. CrossRefGoogle Scholar
  4. 4.
    Heath S, Imregun M (1996) An improved single-parameter tip-timing method for turbomachinery blade vibration measurements using optical laser probes. Int J Mech Sci 38:1047–1058CrossRefGoogle Scholar
  5. 5.
    Pešek L, Vaněk F, Bula V, Cibulka J, Tryzna B (2012) Laboratory optical measurement of model blade vibration under rotation. Engineering mechanics 2012—proceedings. ITAM AS CR, Prague, v. v. i., Svratka (CZ), pp 983–988Google Scholar
  6. 6.
    Pešek L, Vaněk F, Bula V, Cibulka J (2011) Excitation of blade vibration under rotation by synchronous electromagnet. J Eng Mech 18(3/4):1–9Google Scholar
  7. 7.
    Pešek L, Vaněk F, Veselý J, Bula V, Cibulka J (2011) Design of test excitation of travelling waves of rotating bladed wheel with multipoint electromagnetic excitation. Proc. of 9th international conference on vibrations in rotating machines, TU Darmstadt, Německo, CDROM, pp 1–11Google Scholar
  8. 8.
    Pešek L, Bula V, Vaněk F, Cibulka J (2013) Příspěvek k aktivnímu pulznímu buzení modelového lopatkového kola synchronními elektromagnety. Interaction and feedbacks 2013. Institute of Thermomechanics AS CR, v. v. i., Prague, pp 25–36 (in Czech) Google Scholar
  9. 9.
    Pešek L, Bula V, Cibulka J (2015) Využití pulzního buzení k vynucenému buzení vybraných vlastních tvarů oběžného kola za rotace. Dynamics of machines and mechanical systems with interactions, DYMAMESI2015. Institute of Thermomechanics AS CR, v. v. i., Prague, pp 35–44 (in Czech) Google Scholar

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Authors and Affiliations

  1. 1.Institute of Thermomechanics AS CRPragueCzech Republic

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