Analisa Statik, Getaran Bebas, dan Tekuk pada Pelat FGM (Functionally Graded Material) dengan Menggunakan Elemen DST-BK (Discrete Shear Triangle-Batoz Katili) = Static, Free Vibration, and Buckling Analysis of FGM Plates (Functionally Graded Material) Using DST-BK (Discrete Shear Triangle-Batoz Katili) Element.