Topography analysis of non-Gaussian engineered rough surfaces

The topography analysis of engineered rough surfaces provides an insight for an analysis of thin film lubrication regime. The systematic characterization of rough surface helps to improve the lifetime performance and the reliability of high-power density (power throughput/weight) machines. Tribologi...

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Bibliographic Details
Published in:International journal on interactive design and manufacturing 2024-10, Vol.18 (8), p.6141-6149
Main Authors: Prajapati, Deepak K., Prakash, Chander
Format: Article
Language:English
Subjects:
CAE) and Design
Computer-Aided Engineering (CAD
Conjugate gradient method
Electronics and Microelectronics
Engineering
Engineering Design
Fatigue failure
Industrial Design
Instrumentation
Kurtosis
Lattice theory
Mechanical Engineering
Original Paper
Parameters
Radius of curvature
Rolling contact
Skewness
Thin films
Topography
Tribology
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Summary:The topography analysis of engineered rough surfaces provides an insight for an analysis of thin film lubrication regime. The systematic characterization of rough surface helps to improve the lifetime performance and the reliability of high-power density (power throughput/weight) machines. Tribological phenomena like rolling contact fatigue, fretting fatigue, and wear significantly depend on characteristics of rough surfaces. This work demonstrates the numerical synthesis and characterization of various rough surfaces. Surface topographies are numerically simulated using nonlinear conjugate gradient method (NCGM) along with the Johnson translator system method. The influence of pattern ratio ( γ ), skewness ( S sk ) and kurtosis ( S ku ) on topography parameters (summit density, summit radius of curvature) are discussed in detail. It is concluded that a selection of surface topography significantly alters topography parameters which ultimately may affect surface dominant phenomena. The trend on topography parameters obtained from numerical findings are also compared with the surface measurements study for the completeness of the work.
ISSN:1955-2513
1955-2505
DOI:10.1007/s12008-023-01541-z