Official Answer
Answer
Zoben riƙewa na karkace zai fara faɗaɗa da ɗagawa daga ramin sa idan ƙarfin centrifugal ya wuce ƙarfin 'ƙuƙwalwa' na zobe. Ana ƙididdige madaidaicin izinin RPM $N $ a matsayin $ N = \sqrt{\frac{4.8 \ lokuta 10^{11} E t G^2}{w (D_o^3 R_m)}}$, inda $E$ shine Modulus na Ƙarfafawa, $t$ shine kauri, $G$ shine zurfin tsagi, $w$ shine $D diamita. $R_m$ shine madaidaicin radius. Idan saurin aikace-aikacen ya wuce wannan ƙima, ana buƙatar fasalin kulle kai (taba da ramin) don hana zobe daga faɗaɗa radially. Wannan yana da mahimmanci a cikin watsawar motoci masu sauri da kuma raƙuman turbine na sararin samaniya.
