A Method for Measuring Distribution of Impact Pressure Field in Water-jet Cavitation Peening Processing

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (2) : 6-8.

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A Method for Measuring Distribution of Impact Pressure Field in Water-jet Cavitation Peening Processing

HAN Bing1 ZHANG Hai 1 YU Xiaoguang1 JU Dongying2

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Abstract

Water-jet cavitation peening is a new technology for surface modification of metallic materials. Extensive attention from many scholars in the field of surface modification technology was attracted by its own technical features and advantages. The cavitation behavior of the processes involve in the complex and changeable physics phenomenon, such as high-speed, high pressure, multiphase, phase transition, turbulence, unsteady features, Solution and measurement of the impact pressure distribution in this process has always been the problem in the field. In this study, the Fujifilm pressure-sensitive paper was used to measure the distribution of the impact pressure in the water-jet cavitation peening processing, and achieve a precise determination of impact pressure field, and residual stress distributions induced by water-jet cavitation peening processing were measured by the X-ray diffraction stress analysis.The results show that the method for measuring distribution of impact pressure field in water-jet cavitation peening processing is reliable, and the process also can induce the formation of residual compressive stress in the near-surface of the metal material.

Key words

Water-jet cavitation peening Impact pressure field Pressure-sensitive paper X-ray diffraction

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HAN Bing ZHANG Hai YU Xiaoguang JU Dongying . A Method for Measuring Distribution of Impact Pressure Field in Water-jet Cavitation Peening Processing[J]. Journal of Vibration and Shock, 2013, 32(2): 6-8