Mechanical Engineering: Faculty Publications

A Deterministic-Chaos Study of Electron Triboemission Outputs

Document Type

Article

Publication Date

1-1-2007

Publication Title

ASME Transactions: Journal of Tribology

DOI

10.1115/1.2736709

ISSN

0137-1339

Abstract

The authors have carried out extensive measurements of electron triboemission from the scratching of ceramics and semiconductors that are briefly summarized in this paper. Analysis of the frequency-domain distribution of typical triboemission count-pulse outputs suggested that their occurrence is not Poisson’s (e.g., it is not random). This paper presents a study on the hypothesis of deterministic-chaos origin for triboemission data. Electron triboemission outputs from the ceramics alumina, sapphire, silicon nitride, and the semiconductors Si and Ge are analyzed by means of extracting deterministic-chaos metrics. The results suggest that the low-level electron-emission components may be described by multiplicative processes of random initiation, while the superimposed large burst-type components may be of deterministic origin.

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