Official Answer
Answer
Rashin gajiya a maɓuɓɓugan ruwan raƙuman ruwa yawanci yana farawa ne a ciki ko na waje diamita na crest ko kwari inda damuwa mai ƙarfi ya fi girma. Ƙarƙashin na'urar duba microscope (SEM), sa hannun yana bayyana a matsayin 'striations' yana nuna haɓakar haɓakar haɓakar haɓaka kowane zagaye. Rashin gazawa sau da yawa yana faruwa saboda 'saitin' da fashewa. Idan an yi aikin bazara fiye da iyakar gajiya (misali, $\sigma_{max}> 0.5 S_{ut}$ don carbon karfe), tsattsage yana yaduwa har sai sauran ɓangaren giciye ba zai iya ɗaukar nauyin nauyin ba, wanda zai kai ga yanki mai karyewar ƙarshe. Rigakafin ya ƙunshi rage tsayin igiyar ruwa $h$ ko ƙara adadin raƙuman ruwa $N$ don rage damuwa kowane igiyar ruwa.
