An experimental study was conducted to determine the influence of high-pressure waterjet (WJ) peening and abrasive waterjet (AWJ) machining on the surface integrity and texture of metals. A combination of microstructure analysis, microhardness measurements, and profilometry were used in determining the depth of plastic deformation and surface texture that result from the material removal process. The measurement and evaluation of residual stress was conducted with X-ray diffraction. The residual stress fields resulting from treatment were analyzed to further distinguish the influence of material properties on the surface integrity. It was found that waterjet peening induces plastic deformation at the surface layer of metals as good as shot peening. The degree of plastic deformation and the state of material surface were found to be strongly dependent on the peening conditions applied. [S0094-9930(00)00801-5]
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February 2000
Technical Papers
Waterjet Machining and Peening of Metals
M. Ramulu,
M. Ramulu
Department of Mechanical Engineering, University of Washington, Box 352600, Seattle, WA 98195
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S. Kunaporn,
S. Kunaporn
Department of Mechanical Engineering, University of Washington, Box 352600, Seattle, WA 98195
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D. Arola,
D. Arola
University of Maryland, Baltimore County, MD
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J. Hopkins
J. Hopkins
Flow International, Kent, WA 98032
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M. Ramulu
Department of Mechanical Engineering, University of Washington, Box 352600, Seattle, WA 98195
S. Kunaporn
Department of Mechanical Engineering, University of Washington, Box 352600, Seattle, WA 98195
D. Arola
University of Maryland, Baltimore County, MD
M. Hashish
Flow International, Kent, WA 98032
J. Hopkins
Flow International, Kent, WA 98032
Contributed by the Pressure Vessels and Piping Division and presented at the Pressure Vessels and Piping Conference (Joint with IC PVT), Boston, Massachusetts, August 1–5, 1999, of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the PVP Division, June 25, 1999; revised manuscript received August 31, 1999. Technical Editor: S. Y. Zamrik.
J. Pressure Vessel Technol. Feb 2000, 122(1): 90-95 (6 pages)
Published Online: August 31, 1999
Article history
Received:
June 25, 1999
Revised:
August 31, 1999
Citation
Ramulu , M., Kunaporn , S., Arola , D., Hashish , M., and Hopkins , J. (August 31, 1999). "Waterjet Machining and Peening of Metals ." ASME. J. Pressure Vessel Technol. February 2000; 122(1): 90–95. https://doi.org/10.1115/1.556155
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