Vol. 22 No. 3 (2019) Cover Image
Vol. 22 No. 3 (2019)

Published: October 31, 2019

Pages: 233-239

Articles

Fatigue and Vibration Parameters Improvement of Steel DIN 41Cr4 by Ultrasonic Shock Peening Treatment

Zeina Shaker Mahmood 1 Jumaa Salman Chiad
1 University of Baghded
History
  • Received: July 17, 2019
  • Revised: September 10, 2019
  • Accepted: September 17, 2019
  • Available Online: October 26, 2019
DOI

https://doi.org/10.29194/NJES.2203233

Abstract

The effects of the ultrasonic peening treatment (UPT) on the rotating bending fatigue behavior and the behavior of the vibrations of alloy steel DIN 41Cr4 were studied. Hardness test, Tensile test, Constant amplitude fatigue tests, and the vibrations measurements have been carried out on the specimens. Also, the fracture surface was examined and analyzed by a Scanning Electron Microscope (SEM). The results of the investigations, e.g. stress to number of cycles to failure (S-N) curves, fatigue strength improvement factor was 7%. The decreasing percentage of maximum Fast Fourier Transform (FFT) acceleration of the ultrasonic peened condition compared to the untreated conditions was 45%.

Keywords

References

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