Discontinuity Detection in the Vibration Signal of Turning Machines

  • Joško Šoda
  • Slobodan Marko Beroš
  • Ivica Kuzmanić
  • Igor Vujović


The chapter deals with the detection of discontinuities in the vibration signal created by a turning machine in soft and hard processes. This chapter presents an experiment with two embedded piezo-electrical sensors on the turning machine tool tip. AISI 4140 steel workpieces are used in the experiments to obtain the analyzed signal. The purpose of the experiment is to identify the nature and position of rapid changes as a measure of compliance with surface roughness. A new algorithm for wavelet selection is developed and the procedure proved the Daubechies wavelet of the 6th order to be the best choice. The proposed algorithm is based on a new technique of energy matching for wavelets. Due to the algorithm’s efficiency, it is well suited for real time monitoring. Furthermore, it is possible to build a real time monitoring system based on the digital signal system.


Vibration signal Wavelet transform Tool condition monitoring Turning machine 


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Copyright information

© Springer International Publishing Switzerland 2013

Authors and Affiliations

  • Joško Šoda
    • 1
  • Slobodan Marko Beroš
    • 2
  • Ivica Kuzmanić
    • 1
  • Igor Vujović
    • 1
  1. 1.Faculty of Marine StudiesUniversity of SplitSplitCroatia
  2. 2.Faculty of Electrical Engineering, Mechanical Engineering and Naval ArchitectureUniversity of SplitSplitCroatia

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