Hardiyanto D, Tjahjanti PH. Optimal Composition Ratio Achieves Maximum Compressive Strength in Sandwich Panels: Rasio Komposisi Optimal Menghasilkan Kekuatan Tekan Maksimal pada Panel Sandwich. ijins [Internet]. 2026 May 2 [cited 2026 Jun. 17];26(4):10.21070/ijins.v26i4.2125. Available from: https://ijins.umsida.ac.id/index.php/ijins/article/view/2125