Quadratic Cohen representations in spectral analysis of serration process in Al–Mg alloys

Kazimierz Darowicki; Juliusz Orlikowski; Artur Zieliński; Wojciech Jurczak

doi:10.1016/j.commatsci.2006.10.011

Quadratic Cohen representations in spectral analysis of serration process in Al–Mg alloys

Abstract

Important from mechanical point of view the Portevin–Le Chatelier serration phenomenon is being characterized by a complicated spectral profile. As a typical example of nonstationary processes it demands a special treatment allowing to follow the evolution of energy of stress fluctuations as a function of strain. The authors suggest the utilization of a compact system of quadratic transformations, known as Cohen class, as a technique enabling the reliable analysis of serration processes. In this elaboration a comparison of the application of various Cohen decompositions to analyze frequency bands has been introduced.

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Authors (4)

Kazimierz Darowicki prof. dr hab. inż.
Juliusz Orlikowski prof. dr hab. inż.
Artur Zieliński dr hab. inż.
Wojciech Jurczak
- Wydział Mechaniczno Elektryczny Akademia Marynaki Wojennej

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: COMPUTATIONAL MATERIALS SCIENCE no. 39, edition 4, pages 880 - 886,
ISSN: 0927-0256
Language:: English
Publication year:: 2007
Bibliographic description:: Darowicki K., Orlikowski J., Zieliński A., Jurczak W.: Quadratic Cohen representations in spectral analysis of serration process in Al–Mg alloys// COMPUTATIONAL MATERIALS SCIENCE. -Vol. 39, iss. 4 (2007), s.880-886
DOI:: Digital Object Identifier (open in new tab) 10.1016/j.commatsci.2006.10.011
Verified by:: Gdańsk University of Technology