TY - JOUR
T1 - Numerical analysis of 3-D microstructure of coke using micro X-ray CT
AU - Hiraki, Kenichi
AU - Yamazaki, Yoshiaki
AU - Kanai, Tetsuya
AU - Uchida, Ataru
AU - Saito, Yasuhiro
AU - Matsushita, Yohsuke
AU - Aoki, Hideyuki
AU - Miura, Takatoshi
AU - Nomura, Seiji
AU - Hayashizaki, Hideyuki
PY - 2012
Y1 - 2012
N2 - A finite element model of coke was generated using micro X-ray CT, and coke strength was numerically evaluated using its microstructure. First, three-dimensional (3-D) and two-dimensional (2-D) stress analyses of coke were compared. Next, 3-D stress analyses of cokes produced from caking coal and slightly caking coal were conducted in order to investigate the effect of the 3-D microstructure on coke strength. Furthermore, the strength anisotropy of coke was evaluated by stress analyses assuming a uniaxial tensile test in three directions. We found that the maximum principal stress magnitude and stress concentration area are smaller in the 3-D stress analysis than in the 2-D stress analysis. Moreover, the stress concentration area and strength anisotropy of coke produced from slightly caking coal are larger than those of coke produced from caking coal. The results indicate that stress analysis based on micro X-ray CT images is very useful for investigating the relationship between coke microstructure and strength.
AB - A finite element model of coke was generated using micro X-ray CT, and coke strength was numerically evaluated using its microstructure. First, three-dimensional (3-D) and two-dimensional (2-D) stress analyses of coke were compared. Next, 3-D stress analyses of cokes produced from caking coal and slightly caking coal were conducted in order to investigate the effect of the 3-D microstructure on coke strength. Furthermore, the strength anisotropy of coke was evaluated by stress analyses assuming a uniaxial tensile test in three directions. We found that the maximum principal stress magnitude and stress concentration area are smaller in the 3-D stress analysis than in the 2-D stress analysis. Moreover, the stress concentration area and strength anisotropy of coke produced from slightly caking coal are larger than those of coke produced from caking coal. The results indicate that stress analysis based on micro X-ray CT images is very useful for investigating the relationship between coke microstructure and strength.
KW - 3-D analysis
KW - Coke strength
KW - Micro X-ray CT
KW - Microstructure
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U2 - 10.2355/isijinternational.52.1966
DO - 10.2355/isijinternational.52.1966
M3 - Article
AN - SCOPUS:84869761611
VL - 52
SP - 1966
EP - 1972
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
SN - 0915-1559
IS - 11
ER -