I. . Choirotin, M. A. . Choiron, A. . Purnowidodo, and D. B. . Darmadi, “Deformation Mode and Energy Absorption Analysis of Bi-Tubular Corrugated Crash Box Structure ”, ijie, vol. 13, no. 7, pp. 274–280, Sep. 2021, Accessed: Jul. 18, 2024. [Online]. Available: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/7928