fig10

Figure 10. Cyclic stress response and material-pair selection. (A) Peak von Mises stress over 500 cycles; (B) radial stress and temperature profiles for Al₂O₃ + 304SS; (C) CTE design map with iso-lifetime contours; (D) Goodman-corrected fatigue margins; (E) multidisciplinary composite ranking across nine material combinations; (F) 2D stress field for the optimal ZrO₂ + Inconel pairing. Panel (E) consolidates the multidisciplinary ranking across nine material combinations, confirming ZrO₂ paired with Inconel 718 as the preferred selection on the basis of fatigue safety factor, CTE compatibility, and thermal shock resistance. CTE: Coefficient of thermal expansion.