Comprehensive study of parameters for characterizing three-dimensional surface topography II - Statistical properties of parameter variation
The main objective of this paper is to understand and interpret statistical properties of parameter variation on practical engineering surfaces where surface features may be involved and ergodicity or stationarity or non-stationarity is applied. This knowledge is essential for the development of an effective approach to describe characteristics and functional performance of three-dimensional surface topography. The paper treats parameters as random variables, and simulates a practical engineering surface with a random process. The concepts of stationarity and ergodicity of engineering surfaces are presented and quantitative analysis of parameter variation for theoretically modelled non-stationary surfaces is carried out. In addition, statistical properties of parameter variation from three kinds of typical engineering surfaces are discussed, and the influences of non-stationarity, surface features and correlation of sampled profiles on the properties are specified.
Bibliographic Reference: Article: Wear, Vol. 167 (1993) pp. 9-21
Record Number: 199311503 / Last updated on: 1994-11-28
Original language: en
Available languages: en