Question

In terms of theoretical stress concentration factor (k_t) and figure stress concentration factor (k_f),t he notch sensitivity ‘q’ is expressed as                                                         

      (a) (k_f–1)/(k_t–t)                                                   (b) (k_f–1)/(k_t+1)

      (c) (k_t–1)/(k_f–1)                                                  (d) (k_f–1)/(k_f +1)