Answer
302 Sibiilli hin goggogne alayidii hojii jabeessuudha. Yeroo qarqara-marfamuu gilgaala ispiraalii, meeshaan kun haalaan qorraan hojjetama, kunis humna harkisaa fi daangaa dadhabbiin isaa ni dabala. Haa ta'u malee, 'Daangaa Dadhabbii' (dhiibbaan meeshaan marsaa daangaa hin qabne dandamachuu danda'u) 302SSf akkaataa idileetti naannoo humna harkisaa isaa isa dhumaa ($UTS$) dhibbeentaa $25-30$ dha. Naannoo raafama guddaa qabu keessatti, dhiibbaan marsaa $\sigma_{alt}$ raafama kanaan dhufu daangaa kana yoo darbe, gingilchaan karaa babal’ina caccabaa ni kufa. Dizaayinaroonni 'Preload Stress' shallaguu fi 'Vibratory Stress' isa irratti fe'ame naannoo 'Safe' diyaagiraamii Goodman fooyya'e keessa akka turu mirkaneessuu qabu. Rarra’iinsa garmaleedhaaf, gara meeshaa reeshiyoo dadhabbii-UTS ol’aanaa qabutti jijjiiruun, akka 17-7PH, yeroo baay’ee barbaachisaadha.
