Fractal analysis of surface micro-topography for a rolled anisotropic thick sheet of aluminium alloy AA2024-T351

Pirva, Elisabeta; Tudor, Anca; Gavrus, Adinel

doi:10.1088/1757-899x/147/1/012017

Cited by 3 publications

(4 citation statements)

References 2 publications

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“…This is depicted in Figure 10 below. Rq (root mean square) has earlier been considered and referred to as an amplitude parameter by Pirva, Tudor, and Gavrus in context of surface micro topography [10]. 10.…”

Section: Conducting the Experimentsmentioning

confidence: 99%

Taguchi Optimization of Wire EDM Parameters for Surface Roughness of Al 6061 Alloy Based Composite With Sic Reinforcement

Sharma,

Aggarwal,

Payal

2019

IJEAT

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The Al 6061 alloy based Al- SiC metal matrix composite is rated as one of the most commonly used Metal Matrix Composites (MMCs) today. The MMC specimens studied in this research work were fabricated with the stir casting process. This research work studies important parameters in the wire electric discharge machining of Al-SiC 6061 MMC. We employed Taguchi approach to study the machining parameters during the machining process and to minimize the surface roughness values of the surfaces obtained by Wire EDM (Wire Electric Discharge Machine) machining. We found out that out of the seven factors used in this study, gap voltage during the wire EDM machining is the most prominent factor which influences the obtained surface roughness values. Comparatively, a very low value of surface roughness (Rq) was obtained by us during confirmation test by us

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Section: Conducting the Experimentsmentioning

confidence: 99%

Taguchi Optimization of Wire EDM Parameters for Surface Roughness of Al 6061 Alloy Based Composite With Sic Reinforcement

Sharma,

Aggarwal,

Payal

2019

IJEAT

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“…Starting from previous works of authors [13][14] where micro-topography of the rolled aluminium alloy AA2024-T351 surface was studied, the random nature of the roughness height has been described through statistical and fractal analysis. Roughness is one of the main characteristics of surface quality and it can be determined by special contact profilometers (Fig.…”

Section: Experimental Tribological Proceduresmentioning

confidence: 99%

“…A specific roughness structural function method has been used to compute the corresponding geometric fractal dimension D f [13]. It was observed that the samples surface have a fractal behaviour up to 1.1 mm.…”

Section: Experimental Tribological Proceduresmentioning

confidence: 99%

“…Fractal geometry method has been widely used in recent years and can be applied to characterize surface topography and contacts mechanics [16,17]. According to the previous work of authors concerning fractal surface geometry analysis of the anisotropic AA2024-T351 thick plate [13], the purpose of the study is to investigate the fractal character of the friction coefficient evolution during the transition between the static state and the kinetic one in the case of a sliding process between a polyethylene cylindrical pin and the rolled AA2024-T351 surface plate. It is then proposed to analyse the friction curves of Figure 7 corresponding to the higher contact pressure p c = 2.22 MPa (constant normal force F n = 7N) and the chosen constant five speeds.…”

Section: Tribological Fractal Analysismentioning

confidence: 99%

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Some aspects regarding the influence of the anisotropy of an AA2021-T351 rolled thick plate on its tribological behaviour

Pirva

Tudor

Gavrus

et al. 2019

Mechanics & Industry

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This scientific paper aims to study the influence of the anisotropy of an aluminium AA2024-T251 rolled thick plate on the surface tribological properties based on previous experimental and numerical studies concerning bulk and surface mechanical behaviour. Experimental friction tests have been made on the aluminium alloy thick plate surface using sliding of an ultra-high-molecular-weight polyethylene (UHMWPE) cylindrical pin. The used tribological test involves the generation of local motion along specified trajectories with different orientations under the action of a constant normal force and a constant slip velocity. Three different normal forces (3N, 5N, 7N) have been applied using five different sliding speeds (0.005, 0.05, 0.5, 1 and 5mm/s) along a linear trajectory of 3 mm length. In order to analyze the influence of the aluminium alloy anisotropy, the tests have been performed along three directions: a longitudinal one, corresponding to the rolling direction of the sample (0°), a transverse one, perpendicular to the rolling direction (90°), and a median direction (45°). Taking into account the observed bulk and surface anisotropy, especially concerning a fractal nature of the surface topography, an investigation was performed in order to determine its influence on the anisotropic tribological properties. In this purpose, fractal friction characteristics have been determined for the sliding process using a constant normal force Fn = 7N and the above five sliding speeds.

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Micro-scratching tests of a rolled aluminium alloy AA2024-T351 thick plate using a diamond micro-blade

Pirva

Tudor

Gavrus

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Fractal analysis of surface micro-topography for a rolled anisotropic thick sheet of aluminium alloy AA2024-T351

Cited by 3 publications

References 2 publications

Taguchi Optimization of Wire EDM Parameters for Surface Roughness of Al 6061 Alloy Based Composite With Sic Reinforcement

Taguchi Optimization of Wire EDM Parameters for Surface Roughness of Al 6061 Alloy Based Composite With Sic Reinforcement

Some aspects regarding the influence of the anisotropy of an AA2021-T351 rolled thick plate on its tribological behaviour

Micro-scratching tests of a rolled aluminium alloy AA2024-T351 thick plate using a diamond micro-blade

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