Gaussian filtering algorithm describing the topography of temper rolled strip and related edge effect
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Chunyu Xia
Abstract
The surface topography of temper rolled strip consists of a range of spatial wavelengths with approximate normal distribution in height. Gaussian filtering methods can be applied in measuring and characterizing the topography of temper rolled strip. In this study, three Gaussian filtering algorithms, namely convolution algorithm, fast Fourier transform algorithm and fast recursive algorithm, are compared, in order to find out the most suitable one for the topography of temper rolled strip. A similar profile extension method based on the distribution of the topography of strip is proposed to eliminate the edge effect. The results show that the convolution algorithm is obviously beneficial for the computational efficiency. It is also found that the similar profile extension method can effectively eliminate the edge effect and improve the reliability of edge data. The Gaussian convolution algorithm, combined with the similar profile extension method, is able to effectively assess the surface topography of temper rolled strip.
Kurzfassung
Die Oberflächentopographie von Warmwalzband besteht aus einem Bereich von räumlichen Wellenlängen mit einer annähernden Normalverteilung in der Höhe. Um die Topographie von Warmwalzband zu messen und zu charakterisieren, können Gauß-Filterverfahren angewandt werden. In der diesem Beitrag zugrunde liegenden Studie wurden drei Gauß-Filteralgorithmen, und zwar ein Faltungsalgorithmus, ein Fast-Fourier-Transformation-Algorithmus und ein schneller Rekursionsalgorithmus, verglichen, um den für die Topographie von Warmwalzband am besten geeigneten zu finden. Basierend auf der Topographieverteilung des Bandes wird ein ähnliches Profilausbreitungsverfahren eingesetzt, um den Kanteneffekt zu eliminieren. Die Ergebnisse zeigen, dass der Faltungsalgorithmus offensichtliche Vorteile bezüglich der Berechnungseffizienz hat. Es wurde auch ermittelt, dass das ähnliche Profilausbreitungsverfahren den Kanteneffekt effektiv eliminieren kann und die Zuverlässigkeit der Kantenwerte verbessern kann. Der Gauß-Faltungsalgorithmus, kombiniert mit dem ähnlichen Profilausbreitungsverfahren, ist in der Lage die Oberflächentopographie von Warmwalzband sinnvoll abzuschätzen.
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© 2018, Carl Hanser Verlag, München
Articles in the same Issue
- Inhalt/Contents
- Contents
- Vorwort/Editorial
- Looking ahead after 60 successful years
- Fachbeiträge/Technical Contributions
- Deterioration mechanisms of materials – Influences on performance and reliability
- Corrosion fatigue assessment of extruded magnesium alloys AZ31 and ME20
- Low heat input welding of nickel superalloy GTD-111 with Inconel 625 filler metal
- Effect of Cr content on microstructure and mechanical properties of carbidic austempered ductile iron
- Optimization of welding parameters for DP600/TRIP800 dissimilar joints
- Microstructure and mechanical properties of friction welded AISI 1040/AISI 304L steels before and after electrochemical corrosion
- Fatigue behavior and mechanism of KMN in a very high cycle regime
- Gaussian filtering algorithm describing the topography of temper rolled strip and related edge effect
- Impression creep behavior of magnesium alloy ZK60
- Rauheitsanforderungen für die mobile Härteprüfung metallischer Werkstoffe
- Preparation and characterization of Kevlar/glass fiber laminates with a nanoclay enhanced epoxy matrix
- Effect of seawater on pin-loaded laminated composites
- Thermomechanical and acidic treatments to improve plasticization and properties of chitosan films: A comparative study of acid types and glycerol effects
- Efficient reduction of graphene oxide film by low temperature heat treatment and its effect on electrical conductivity
- Experimental evaluation of optimum process parameters for spinning of metals
Articles in the same Issue
- Inhalt/Contents
- Contents
- Vorwort/Editorial
- Looking ahead after 60 successful years
- Fachbeiträge/Technical Contributions
- Deterioration mechanisms of materials – Influences on performance and reliability
- Corrosion fatigue assessment of extruded magnesium alloys AZ31 and ME20
- Low heat input welding of nickel superalloy GTD-111 with Inconel 625 filler metal
- Effect of Cr content on microstructure and mechanical properties of carbidic austempered ductile iron
- Optimization of welding parameters for DP600/TRIP800 dissimilar joints
- Microstructure and mechanical properties of friction welded AISI 1040/AISI 304L steels before and after electrochemical corrosion
- Fatigue behavior and mechanism of KMN in a very high cycle regime
- Gaussian filtering algorithm describing the topography of temper rolled strip and related edge effect
- Impression creep behavior of magnesium alloy ZK60
- Rauheitsanforderungen für die mobile Härteprüfung metallischer Werkstoffe
- Preparation and characterization of Kevlar/glass fiber laminates with a nanoclay enhanced epoxy matrix
- Effect of seawater on pin-loaded laminated composites
- Thermomechanical and acidic treatments to improve plasticization and properties of chitosan films: A comparative study of acid types and glycerol effects
- Efficient reduction of graphene oxide film by low temperature heat treatment and its effect on electrical conductivity
- Experimental evaluation of optimum process parameters for spinning of metals