Answer
Kumeneka mugihe cyo kwishyiriraho hafi buri gihe biterwa na 'Kurenza urugero' cyangwa 'Ubukorikori bwibintu.' Niba ibikoresho ari ibyuma byinshi bya karubone, reba Hydrogen Embrittlement niba iherutse gushyirwaho. Niba ari 17-7PH, reba inyandiko zivura ubushyuhe; 'Kurenza urugero' cyangwa 'Kutarenza imyaka' bishobora kuvamo guhindagurika bidakwiye. Mu buryo bwa geometrike, niba mandel yo kwishyiriraho yari nini cyane, guhangayikishwa na fibre kumurambararo wimpeta yarenze Ultimate Tensile Strength (UTS). Kubara $ \ sigma = _x000c_rac {E imes t imes (D_ {exp} - D_i)} {(D_i imes D_ {exp})} $ bigomba gukoreshwa kugirango hamenyekane ko umurego $ \ epsilon $ mugihe cyo kwaguka utarenze ibikoresho 'Kurambura kuri Break' (mubisanzwe 5-10% kuriyi miti).
