Correlating and evaluating the functionality-related properties with surface texture parameters and specific characteristics of machined components

• DOI: 10.1016/j.ijmecsci.2018.09.044
• Publication Date: 2018-09-26T21:07:40Z
• Authors: Quanren Zeng; Yi Qin; Wenlong Chang; Xichun Luo
• Keywords: Texture (cosmology); Characterization; Surface Integrity

Machining-process-induced surface texture plays an indispensable role in determining integrity and final functional performance of the machined components. Although there are already many existing standard parameters for quantitatively characterizing surface, accurately describing effectively correlating 3D specific characteristics with relevant performances practice, still not well solved. The inadequacy using 2D single-valued profile non-ubiquity areal industry main obstacles. research reported this paper addressed issue by proposing a practical means which makes use both statistical functions geometrical characterization correlation evaluation. To better investigate influence machining-induced its on functionality-related surfaces, Ni-based superalloy GH4169, typical difficult-to-machine material widely used aircraft industry, was selected machining experiment. Two kinds mechanically-processed one ground other turned, having identical value arithmetic mean deviation (Sa), were characterized analyzed parameters. Considering that measured is random nature, corresponding also investigated functions, e.g. power spectral density (PSD) auto-covariance (ACV). Correlation between or performance, contact, running-in wear lubricant retention, then established. This study emphasized effectiveness veracity evaluating machined-surface along traditional It especially suitable materials whose properties machining-process-sensitive surface-texture-dependent.