Official Answer
Answer
Tsagewar gefen yana faruwa a lokacin murɗawa ko aiwatar da hatimi idan kayan aikin ba su da ƙarfi ko ductility na kayan bai isa ba. Waɗannan ƙananan fashe-fashe a gefen radial na bazara suna aiki azaman matsananciyar damuwa. Ƙarƙashin lodin keken keke, ma'anar ƙarfin damuwa $K$ a ƙwanƙwasa an bayyana shi da $K = Y \cdot \sigma \cdot \sqrt{\pi \cdot a}$, inda $a$ shine zurfin tsaga. Idan $K$ ya zarce taurin karaya $K_{Ic}$ na kayan (misali, 17-7PH), tsagewar zai yaɗu da sauri. Ana buƙatar dubawa na gani a haɓakar 10x ko duban shigar da ruwa mai kyalli (FPI) don manyan sassan sararin samaniya don tabbatar da cewa babu lahani na gefe.
