Improvement of Fatigue Strength of Stainless Steel by Using a Cavitating Jet with an Associated Water Jet in Water

Abstract:

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Peening method using cavitation impacts have been developed. In this peening method, cavitation bubbles were generated by a cavitating jet. In order to increase peening intensity, a low speed water jet was injected around a cavitating jet, as the water jet swept away residual bubbles, which weaken the cavitation impact. In the present paper, improvement of fatigue strength of stainless steel by using a cavitating jet with an associated water jet was investigated compared with the results of conventional cavitating jet. It was concluded that the cavitating jet with an associated water jet can peen the stainless steel more effectively compared with the conventional cavitating jet.

Info:

Periodical:

Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie

Pages:

162-165

Citation:

H. Soyama and M. Mikami, "Improvement of Fatigue Strength of Stainless Steel by Using a Cavitating Jet with an Associated Water Jet in Water", Key Engineering Materials, Vols. 353-358, pp. 162-165, 2007

Online since:

September 2007

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$38.00

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[7] R.E. Little: Probabilistic Aspects of Fatigue, ASTM STP 511 (1972), pp.29-400 Amplitude of bendig stress σa MPa.

[10] [6] [10] [5] [10] [8] [10] [7] Number of cycles to failure N.

[10] [4] Cavitating jet with associated jet Cavitating jet without associated jet at s = 25 mm Cavitating jet without associated jet at s = 65 mm Not-peened.

DOI: https://doi.org/10.4028/0-87849-456-1.162

10 20 30 40 50.

[10] [6] [10] [5] [10] [7] Number of cycles to failure N Processing time per unit length t s/mm Cavitating jet with associated jet Cavitating jet without associated jet at s = 25 mm Cavitating jet without associated jet at s = 65 mm.

DOI: https://doi.org/10.2355/isijinternational.48.1577

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