人造黒船電極材の熱衝撃破壊における切り欠き部開口変位挙動

概要

論文の詳細を見る
Thermal Shock tests by arc-discharge heating were carried out on the notched disc specimens of artificial graphite electrodes, while monitoring the change of crack opening displacement (C. O. D.) with time by using a clip gage. The crack abruptly extended from the notch tip at a certain time and stayed at the arc spot in the center of the specimen. The slope θ of the line connecting the origin and C. O. D. just after abrupt extension of the crack, could be determined on each electrode sample within the accuracy of ±10%, independent of notch size. The θ-value thus determined was proposed to be used as a parameter for evaluating the thermal shock resistance of graphite electrode materials and to be named as “thermal shock energy dispersion rate”.
社団法人日本セラミックス協会の論文
1992-01-01