Shot Peening on Pelton Wheels: Methods of Control and Results

  1. Prof. Dr.-Ing Lothar Wagner Chairman of ICSP8
  1. Paolo Marconi1,
  2. Marco Lauro2 and
  3. Walter Bozzolo2

Published Online: 7 FEB 2006

DOI: 10.1002/3527606580.ch18

Shot Peening

Shot Peening

How to Cite

Marconi, P., Lauro, M. and Bozzolo, W. (2003) Shot Peening on Pelton Wheels: Methods of Control and Results, in Shot Peening (ed L. Wagner), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606580.ch18

Editor Information

  1. TU Clausthal, Institut für Werkstoffkunde und Werkstofftechnik, Agricolastr. 6, D-38678 Clausthal-Zellerfeld, Germany

Author Information

  1. 1

    Effe Engineering s.u.r.l., Manerba del Garda, Italy

  2. 2

    Enel Produzione S.p.A., Turin, Italy

Publication History

  1. Published Online: 7 FEB 2006
  2. Published Print: 12 MAY 2003

ISBN Information

Print ISBN: 9783527305377

Online ISBN: 9783527606580

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Keywords:

  • shot peening on Pelton Wheels;
  • automobile manufacturers;
  • Barkhausen noise;
  • X-ray diffraction

Summary

Shot peening is normally used to increase fatigue resistance in rather small-sized mechanical parts (gears, transmission shafts, connecting rods).

Residual stress induced by this treatment has been studied extensively in the past decade.

Some automobile manufacturers have recently introduced specifications concerning the depth of residual stress in gears.

Most of the research done on this topic has made use of the X-ray diffraction method to determine residual stress.

Because of the configuration of Pelton wheels, shot peened areas cannot be easily accessed with portable diffraction meters. For this reason, the authors have used the Barkhausen noise method to measure residual stress and have then compared results before and after peening. The Barkhausen noise method was calibrated against Almen strips by X-ray diffraction and by hole drilling methods.