熱疲労破壊の条件式ならびにε-T_<max>-N線図

概要

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The authors has conducted some varying-constraint thermal fatigue experiments systematically, and found a conclusion that cycle maximum temperature T_<max> as well as mechnical strain ε is the most sensitive factor in thermal fatigue. Based on this assumption, a criterion for thermal fatigue failure has been proposed. That is, the relationship [numerical formula] gives a good fit for thermal fatigue test results of stainless steel, where ε_0 is endurance limit, K and Q are constant. In order to apply the criterion to practical design, the authors have introduced ε-T_%lt;max>-N curve. In addition, the relation between thermal fatigue in case constraint is constant and that in case constraint is varying is also discussed.
社団法人日本材料学会の論文
1963-09-15