diponegoro 4dMohammad Bagus Abiyyan Tsani et.al. natural frequency analysis using raspberry shake 4D on the Diponegoro Education Dam International Journal of Research and Review ()Tags: 4D, AESA, Diponegoro Class, Indo Defence 2022, korvet, KRI Diponergoro 365, Thales, Thales Air Defence, TNI AL. Related Posts.