Answer
Shakatawar damuwa shine canji na dogaro da lokaci na nau'in roba zuwa nau'in robobi a ƙarƙashin jujjuyawar akai-akai. A cikin haɗin gwiwa da aka kulle, idan ana amfani da magudanar ruwa don kula da tashin hankali, shakatawa zai haifar da raguwar ƙarfin da ake amfani da shi $ P$. Yawan annashuwa yana bin alaƙar nau'in Arrhenius: $d\sigma/dt = A \cdot e^{(-Q/RT)} \cdot \sigma^n$, inda $Q$ shine kuzarin kunnawa don creep kuma $T$ shine zafin jiki. A $150 ^{\circ}C$, daidaitaccen ƙarfe na carbon zai iya huta har zuwa $10-15\%$ na nauyin farko a cikin sa'o'i $1000 na farko. Don rage wannan, injiniyoyi yakamata su ƙididdige tsarin 'Zafin Saitin' yayin ƙera, inda aka matse ruwan bazara zuwa tsayinsa na aiki kuma an fallasa shi zuwa yanayin zafi da ya wuce yanayin aiki, yadda ya kamata' pre-lalata' kayan.
