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Title: Multiple Cracks On Continuous Caster Rolls' Surface: A Three-Dimensional View
Authors: Yasniy, Petro Volodimirovich
Maruschak, Pavlo Orestovich
Konovalenko, Igor Volodimirovich
Gliha, Vladimir
Vuherer, Tomaz
Bishchak, Roman Teodorovich
Ясній, Петро Володимирович
Марущак, Павло Орестович
Коноваленко, Ігор Володимирович
Гліха, Владімір
Вухерер, Томаш
Біщак, Роман Теодорович
Bibliographic description (Ukraine): Yasniy P. Multiple Cracks On Continuous Caster Rolls' Surface: A Three-Dimensional View/ P. Yasniy, P. Maruschak, I. Konovalenko, V. Gliha, T. Vuherer, R. Bishchak// 4-th International Conference Processing and Structure of Materials proceedings/ Editors: Endre Romhanji, Milan T. Jovanovic, Nenad Radovic.- 2010.- pp.7-12
Issue Date: 27-May-2010
Date of entry: 22-May-2012
Publisher: Association of Metallurgical Engineers of Serbia (AMES); University of Belgrade - Faculty of Technology and Metallurgy Belgrade (TMF)
Keywords: caster roll
thermal fatigue
optical crack detection
multiple cracking
Abstract: A procedure for numerical analysis of the surface state of a roll for a billet continuous casting machine at the stage of coalescence of thermal fatigue cracks has been developed and implemented which is based on the identification of photo image elements. This paper presents a feasibility study for practical application of an digital-based real-time health monitoring technique. The scientific background and formal methods for optical inspection quality control are proposed on the basis of the optimization of the system input parameters. First, comparison between experimental and analytical studies for damage detection on a CCM roll is made. Secondly, multiple (shear and flexural) cracks incurred in a CCM rolls are monitored continuously by using a digital system.
Description: Operation under thermomechanical loading causes initiation of cracks on the surface of metallurgical equipment, in particular, rollers of continuous billet casting machines (CCM) [1]. Growth of these cracks results in their coalescence into a thermal cracking network. Its development unloads adjacent roller sections thus impeding their cracking. Nevertheless, a dominant crack stands apart within the network, which is formed either by individual crack extensions or by coalescence of separate cracks. The growth of this crack may lead to structural failure [2]. At present, a number of methods are used in order to identify individual fatigue cracks, however, evaluating the parameters of a network of cracks is a more complex task [3, 4]. A number of approaches are developed for analyzing the material surface cracking, however they all need to be improved further and adapted to geometric peculiarities of real cracked structures of CCM rollers [5,6]. Thus, the purpose of this work is to develop an algorithm for identifying surface cracking with a view to describing the elements of the network of cracks and performing their quantitative analysis.
ISBN: 978-86-87183-17-9
Content type: Article
Appears in Collections:Наукова діяльність Яснія П. В.
Наукові публікації працівників кафедри автоматизації технологічних процесів та виробництв

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