...M. A. Al-Bukhaiti; A. Abouel-Kasem; Y. Abdelrhman; M. Heshmat; S. M. Ahmed In this research, we utilize image processing to analyze surfaces acquired from slurry-erosion tests carried out on AISI 5117 steel at various velocities and impact angles of 30 deg and 90 deg. The fractal and wavelet...

... and the characteristics between the reticle and the chuck are studied in this article. First, based on the Kogut–Etsion contact model and the Majumdar–Bhushan (MB) fractal contact model, the maximum static friction coefficient model between nano-scale surfaces was established. Then, the surface morphology parameters...

... Processing (Analysis of Tribochemical Damages) ,” Tribol. , 13 ( 2 ), pp. 125 – 129 . 10.1023/A:1020160817603 [5] Abouel-Kasem , A. , Alturki , F. A. , and Ahmed , S. M. , 2011 , “ Fractal Analysis of Cavitation Eroded Surface in Dilute Emulsions ,” Trans. ASME, J. Tribol. , 133 , p...

... fractal analysis. The results revealed that for all applied stress, the wear rates increased with increasing the sliding velocity of both samples. The wear rate of the rolled samples is greater than that of the extruded samples at the stress range from 3 to 5 MPa. However, when the stress is increased...

...A. Abouel-Kasem; F. A. Alturki; S. M. Ahmed In the present work, the topographical images of cavitation erosion surfaces at water and oil-in-water (o/w) emulsions were quantified using fractal analysis. The oil-in-water emulsion concentrations were 2, 5 and 10 wt. %, which are in the popular range...

...Abouel-Kasem; M. A. Al-Bukhaiti; K. M. Emara; S. M. Ahmed In the present work, the topographical images of slurry erosion surfaces at different impact angles were quantified using fractal analysis. The study showed that the variation of fractal value of slope of linearized power spectral density...

...Y. F. Peng; Y. B. Guo; Y. Q. Hong The strong stiction of adjacent surfaces with meniscus is a major design concern in the devices with a microsized interface. The present research concerns the elastic adhesion of rough fractal surfaces in the presence of a thin liquid film. A rough fractal surface...

... contact parameter and the dimensionless roughness parameter, which are both independent of the instrument resolution, thus providing a long awaited solution to the problem of instrument dependency in a traditional theory. An application to fractal-regular surfaces indicates that the influence...

...Shao Wang; Ji Shen; Wai Kin Chan A fractal dimension and a fractal roughness parameter are usually used to characterize a fractal surface. For a fractal-regular surface, a fractal domain length is also included. Such a formulation is based on an approximation using a constant value of the fractal...

... viscoelastic constitutive law, the standard linear solid (SLS) law. The model aims at studying the normal compliance (approach) of the punch surface, which will be assumed to be quasistatic, as a function of the applied creep load. The roughness of the punch surface is assumed to be fractal in nature...