Paper Title:
Baysesian Neural Network Approach to Detecting Temper Embrittlement of 30Cr2MoV Rotor Steels
  Abstract

Baysesian Neural Network approach for predicting the temper embrittlement of steam turbine rotor in service was proposed. The FATT50 (the fracture appearance transition temperature) of the rotors was predicted as a function of ratio of the two peak current densities (Ipr / Ip ) tested by electrochemical potentiodynamic reaction method, temperature of electrolyte, J-factor and grain size ( N ). A database was obtained from the test of electrochemical potentiodynamic reaction and Charpy impact. The Bayesian neural network technique was used for modeling of temper embrittlement. The neural network shows a more precise prediction of temper embrittlement of rotor steels than the prediction using multiple linear regression. The training error and verifying error is with the scatter of ±20°C. The results show that, for the temper embrittlement of rotor steels prediction, the prediction model based on Bayesian neural network is feasible and effective.

  Info
Periodical
Edited by
Shengyi Li, Yingchun Liu, Rongbo Zhu, Hongguang Li, Wensi Ding
Pages
1046-1051
DOI
10.4028/www.scientific.net/AMM.34-35.1046
Citation
Y. Z. Fan, R. N. Ma, A. Du, "Baysesian Neural Network Approach to Detecting Temper Embrittlement of 30Cr2MoV Rotor Steels", Applied Mechanics and Materials, Vols. 34-35, pp. 1046-1051, 2010
Online since
October 2010
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$32.00
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