Initiation/propagation/control Of Cracking On
Anodized Aluminium And Electroplated Steel
Author(s)
A. F. Batzias & G. Batis
Abstract
This work deals with the crack initiation/propagation on surface layers
electrochemically produced on metallic substrates, primarily to enhance physical
qualities, such as mechanical strength and corrosion resistance, and secondly for
decoration. Crack initiation may take place within any stage of the industrial
treatment of metallic surfaces (mainly aluminium or steel, anodized or
electroplated respectively); crack propagation, however, and subsequent fracture
may occur when service conditions favour this damage. The methodology
adopted for crack prevention/control is based on Fault Tree Analysis (FTA), in
its fuzzy version to deal with uncertainty. This methodology is incorporated into
a framework of quality/process control to give a holistic approach.
Implementation of the suggested methodology is presented in the case of
‘cracking’ of anodized aluminium either during the industrial production or
during the service time of the article/component.
Keywords: cracking, fuzzy fault tree analysis, diagnosis, knowledge base,
anodised aluminium.
1 Introduction
Cracking is a severe failure that influences dramatically the reliability of a
component and, depending on the significance of the component’s function, of a
whole operating system. The initiation of this failure is a small-scale defect, also
denoted ‘cracking’, which is usually created during component manufacture.
Propagation of cracking may take place even within the manufacturing units, e.g.
Keywords
cracking, fuzzy fault tree analysis, diagnosis, knowledge base,
anodised aluminium.
Related Book
Other papers in this volume
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