Yi nazarin gazawar inda igiyar igiyar ruwa ta 'Bude' ko ta rasa tsayinta kyauta bayan fara aiki.

Asarar tsayi kyauta, ko 'saitin,' yana faruwa lokacin da damuwa aiki ya wuce iyakar kayan abu. Wannan sau da yawa yana faruwa idan an matsa ruwan bazara zuwa tsayinsa mai ƙarfi $H_s$ yayin shigarwa, koda tsayin aiki $H_1$ yana da aminci. Dole ne a lissafta damuwa a tsayin tsayin $\sigma_s$. Idan $\sigma_s > \sigma_{samar da}$$, ruwan bazara zai fuskanci nakasu na roba. Don warware matsalar, muna aiwatar da tsarin 'Presetting' yayin masana'anta inda aka matsa ruwan bazara zuwa ƙarfi sau 3. Wannan yana haifar da matsi na matsi masu fa'ida. Idan bazara har yanzu ya yi hasarar tsayi, dole ne a haɓaka kayan zuwa gaɗaɗɗen ƙarfi mai ƙarfi (misali, daga 302 zuwa 17-7PH) ko ƙidayar igiyar ruwa $ N $ don rage damuwa ta kowane kalaman.