, Volume 48, Issue 4, pp 783-789

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

Intermittency and multiscale dynamics in milling of fiber reinforced composites

  • A. K. SenAffiliated withRichard G. Lugar Center for Renewable Energy, and Department of Mathematical Science, Indiana University
  • , G. LitakAffiliated withDepartment of Applied Mechanics, Technical University of Lublin Email author 
  • , A. SytaAffiliated withDepartment of Applied Mathematics, Technical University of Lublin
  • , R. RusinekAffiliated withDepartment of Applied Mechanics, Technical University of Lublin


We have analyzed the variations in cutting force during milling of a fiber-reinforced composite material. In particular, we have investigated the multiscale dynamics of the cutting force measured at different spindle speeds using multifractals and wavelets. The multifractal analysis revealed the changes in complexity with varying spindle speeds. The wavelet analysis identified the coexistence of important periodicities related to the natural frequency of the system and its multiple harmonics. Their nonlinear superposition leads to the specific intermittent behavior. The workpiece used in the experiment was prepared from an epoxy-polymer matrix composite reinforced by carbon fibers.


Milling Wavelets Multifractals Nonlinear vibration Mechanics of machines