Adjoint model for estimating material parameters based on microstructure evolution during spinodal decomposition
Adjoint model for estimating material parameters based on microstructure evolution during spinodal decomposition
复制标题
基于旋节线分解期间微观结构演化估计材料参数的伴随模型
DOI:
10.1103/physrevmaterials.5.113801
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发表时间:
2021
影响因子:
3.4
通讯作者:
Koyama Toshiyuki
中科院分区:
文献类型:
--
作者:
Matsuura Yuki;Tsukada Yuhki;Koyama Toshiyuki
Data assimilation techniques are attracting increasing attention because they enable researchers to estimate material parameters by integrating an advanced computational model with experimental data of microstructure evolution. In this study, we develop an adjoint model to integrate a phase-field model for spinodal decomposition with time-series measurement data of compositional field maps to estimate the unknown parameters in the phase-field model. As a case study, simultaneous estimation of six parameters (Gibbs energy parameters, gradient energy coefficient, etc.) in the phase-field model is considered. To confirm the effectiveness of the developed adjoint model, numerical tests called “twin experiments” are conducted using synthetic measurement data prepared in advance through phase-field simulation. In the twin experiments, the optimum estimates of six model parameters of interest are shown to coincide with true values, indicating that several model parameters can be successfully estimated. Furthermore, the effects of the standard deviation of measurement noiseand the time interval of measurementson uncertainties of optimum estimates of parametersare examined by conducting twin experiments. It is shown that there is a positive correlation betweenandor betweenand, which is essential information for designing experiments to estimate model parameters. The developed adjoint model is assumed to be useful for estimating unknown parameters (e.g., Gibbs energy parameters of a nonequilibrium phase) using time-series measurement data of microstructure evolution during spinodal decomposition.
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DOI:
10.1016/0001-6160(67)90266-0
发表时间:
1967
期刊:
Acta Metallurgica
影响因子:
--
作者:
K. Rundman;J. Hilliard
通讯作者:
J. Hilliard
影响因子:
1.8
作者:
T. Kozakai;Hideo Aihara;M. Doi;T. Miyazaki
通讯作者:
T. Miyazaki
DOI:
10.1016/0001-6160(80)90157-1
发表时间:
1980-01-01
期刊:
ACTA METALLURGICA
影响因子:
--
作者:
DITCHEK, B;SCHWARTZ, LH
通讯作者:
SCHWARTZ, LH
影响因子:
4.6
作者:
NAUMAN, EB;HE, DQ
通讯作者:
HE, DQ
DOI:
10.11499/sicejl.56.656
发表时间:
2017
期刊:
Journal of The Society of Instrument and Control Engineers
影响因子:
--
作者:
河本高文;二木厚吉;吉岡 信和;福元 豊,大塚 悟;上野 玄太
通讯作者:
上野 玄太