Yudiono, H. et al. 2024. Effect of Alkalization Time on the Toughness and Strength of Jute Sack Waste Lamina Composite as an Alternative Car Bumper Material. International Journal of Automotive and Mechanical Engineering. 21, 4 (Nov. 2024), 11809–11820. DOI:https://doi.org/10.15282/ijame.21.4.2024.6.0909.