Improvement of Fatigue Strength of Aluminum Alloy by Cavitation Shotless Peening

[+] Author and Article Information
Hitoshi Soyama, Kenichi Saito, Masumi Saka

Department of Mechanical Engineering, Tohoku University, Aoba 01, Aramaki, Aoba-ku, Sendai 980-8579, Japan

J. Eng. Mater. Technol 124(2), 135-139 (Mar 26, 2002) (5 pages) doi:10.1115/1.1447926 History: Received June 05, 2001; Revised October 26, 2001; Online March 26, 2002
Copyright © 2002 by ASME
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Cavitating jet apparatus for cavitation shotless peening
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Scanning of specimen by a cavitating jet
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Geometry of specimen for a rotating bending fatigue test (all dimensions are in mm)
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Improvement of fatigue strength by cavitation shotless peening
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Typical fractography of specimen. (a) Non-peened specimen (σa=139 MPa); (b) peened specimen (σa=166 Mpa)
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Surface of specimens for a fatigue test. (a) Non-peened; (b) cavitation shotless peening.
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Arc height of N-type almen strip changing with exposure time per unit length to cavitating jet for cavitation shotless peening



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