Effect of Shot Peening on Improvement of Fatigue Strength for Metal Bellows

  1. Prof. Dr.-Ing Lothar Wagner Chairman of ICSP8
  1. H. Okada1,
  2. A. Tange1 and
  3. Kotoji Ando2

Published Online: 7 FEB 2006

DOI: 10.1002/3527606580.ch43

Shot Peening

Shot Peening

How to Cite

Okada, H., Tange, A. and Ando, K. (2003) Effect of Shot Peening on Improvement of Fatigue Strength for Metal Bellows, in Shot Peening (ed L. Wagner), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606580.ch43

Editor Information

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

Author Information

  1. 1

    NHK SPRING CO., LTD., Kanagawa-Pref, Japan

  2. 2

    Yokohama National University, Kanagawa-Pref, Japan

Publication History

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

ISBN Information

Print ISBN: 9783527305377

Online ISBN: 9783527606580



  • shot peening;
  • effect on improvement of fatigue strength;
  • metal bellows


Generally metal bellows (it is hereafter described as a bellows) are known for a seal to defend a leak being elastic. Recently small size bore bellows are getting to expect to a seal of pump which was small and can use under the circumstances of high pressure. However, until now, it would be difficult to achieve the fatigue strength for required specifications in most cases. Meanwhile it was known for that shot peening had an effect on improving fatigue strength. It can be expected that it is difficult to obtain a large compressive residual stress on the inner surface of small bore size bellows by shot peening process. In order to obtain the effect of shot peening on the inner surface of bellows, new shot peening processes by using a air peening machine and a reflective plate were developed. It was found that this method can apply the shots to the inner surface of bellows effectively, to improve the fatigue life of bellows, comparing with non-shot peening one.