%0 Journal Article %A Alavinejhad, Mehdi, Ghodsi Hassanabad, Madjid, Ketabdari, Mohammadjavad, Nekooei, Masoud %T A new model as a damage index in an eigen value problem with application in health monitoring of offshore jacket platform %J Journal of New Researches in Mathematics %V 7 %N 3 %P 27-42 %D 2021 %R %U https://sanad.iau.ir/fa/Article/798203