Muhammad Rafiuddin Ekhwan, SUBRAMANIAM, S. K. ., & Susharrman. (2025). Crashworthiness Analysis of Hierarchical Multi-Cell Circular Structures Made of Recycled Aa6061 Aluminium Alloys for Sustainable Automotive Crash Box. Research Progress in Mechanical and Manufacturing Engineering, 6(2), 217-227. https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/21461