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Osman, M., Ahmed, S. (2014). INVESTIGATION OF CAVITATION DAMAGE PROGRESS IN THE INCUBATION PERIOD USING STEPWISE EROSION AND IMAGE PROCESS TECHNIQUES. JES. Journal of Engineering Sciences, 42(No 3), 683-702. doi: 10.21608/jesaun.2014.115022
M. Osman; S. M. Ahmed. "INVESTIGATION OF CAVITATION DAMAGE PROGRESS IN THE INCUBATION PERIOD USING STEPWISE EROSION AND IMAGE PROCESS TECHNIQUES". JES. Journal of Engineering Sciences, 42, No 3, 2014, 683-702. doi: 10.21608/jesaun.2014.115022
Osman, M., Ahmed, S. (2014). 'INVESTIGATION OF CAVITATION DAMAGE PROGRESS IN THE INCUBATION PERIOD USING STEPWISE EROSION AND IMAGE PROCESS TECHNIQUES', JES. Journal of Engineering Sciences, 42(No 3), pp. 683-702. doi: 10.21608/jesaun.2014.115022
Osman, M., Ahmed, S. INVESTIGATION OF CAVITATION DAMAGE PROGRESS IN THE INCUBATION PERIOD USING STEPWISE EROSION AND IMAGE PROCESS TECHNIQUES. JES. Journal of Engineering Sciences, 2014; 42(No 3): 683-702. doi: 10.21608/jesaun.2014.115022

INVESTIGATION OF CAVITATION DAMAGE PROGRESS IN THE INCUBATION PERIOD USING STEPWISE EROSION AND IMAGE PROCESS TECHNIQUES

Article 12, Volume 42, No 3, May and June 2014, Page 683-702  XML PDF (521.58 K)
Document Type: Research Paper
DOI: 10.21608/jesaun.2014.115022
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Authors
M. Osman1; S. M. Ahmed2
1Mechanical Eng. Depat. College of Engineering, Majmaah University, Saudi Arabia
2Mechanical Engineering Department, Faculty of Engineering, Majmaah University ,Saudi Arabia
Abstract
Cavitation damage process of stainless steel during the incubation period was detected and
evaluated using stepwise erosion technique and image processing. The damage experiments were
conducted using the vibratory test rig. The scanning electron microscope images at different
locations on eroded surface using stepwise technique were presented. In addition, the surface
roughness was measured with the testing time. Discrete wavelet transforms and fractals had been
adopted to extract the relevant features. It was found that the feature parameters: Shannon entropy,
energy loss, fractal dimension and intercept show a fairly linear increase with the testing time. It
was also observed that the feature parameters have reasonable correlations with the roughness
parameters.
Keywords
Cavitation erosion; electron microscopy; surface analysis; stainless steel
Main Subjects
Mechanical, Power, Production, Design and Mechatronics Engineering.
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