Computer aided classification of internal damages the chromium-molybdenum steels after creep service

• Autorzy: Dobrzański J. , Sroka M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of the paper is to present the computer assisted method for analysis of scanning electron microscope metallographic images of elements after long time operating in creep conditions. Design/methodology/approach: The development of internal damages in low alloyed chromium-molybdenum steels were discussed and illustrated. As a tools of evaluation of the internal damages' classes of power industry installation elements from 16Mo3 steel operating in creep conditions a method based on image analysis, geometrical coefficient and artificial neural networks was used. Findings: Combining of several methods making use of the image analysis, geometrical coefficients and neural networks will make it possible to achieve the better efficiency of class recognition of damages developed in the material. Practical implications: This method can find a practical application for evaluation and classification of creep-damages of elements power industry installations. Originality/value: The use of images analysis and neural networks to identification and classification of internal damages of low alloyed chromium-molybdenum steels working in creep conditions.

Słowa kluczowe

EN

image analysis; neural networks; steels; creep

PL

analiza obrazu; sieci neuronowe; stale; pełzanie

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 24, nr 2
• Strony: 143--146
• Opis fizyczny: Bibliogr. 15 poz., fot., rys., tab.

Twórcy

autor

Dobrzański J.

autor

Sroka M.

• Institute of Ferrous Metallurgy, ul. K. Miarki 12/14, 44-100 Gliwice, Poland,

Bibliografia

• [1] J. Dobrzański, Internal damage processes in low alloy chromium-molybdenum steels during high-temperature creep service, Journal of Materials Processing Technology 157-158 (2004) 197-303.
• [2] J. Dobrzański, A. Zieliński, M. Sroka, Structure, properties and method of the state evaluation of low-alloyed steel T23 (HCM2S) worked in creep conditions, Proceedings of the International Scientific Conference on the Contemporary Achievements in Mechanics, Manufacturing and Materials Science CAM3S'2005, Gliwice-Zakopane, 2005, 171-180.
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• [6] J. Dobrzański, M. Sroka, A. Zieliński, Methodology of classification of internal damage the steels during creep service, Journal of Achievements in Materials and Manufacturing Engineering 18 (2006) 263-266.
• [7] M. Sroka, Methodology of computer forecasting of residual life of elements in creep service, PhD Thesis, Gliwice (2006) (unpublished) (in Polish).
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• [15] Polish standard, PN-EN 10028-2:2005 Flat products made of steels for pressure purposes - Part 2: Non-alloy and alloy steels with specified elevated temperature properties.