Abdullah, M. N. ., Yaakob, M. S. ., Muda, M. K. H. ., & Mustapha, F. . (2020). Drop-Weight Impact Test for Measuring the Damage Resistance of Aero Helmets. Journal of Advanced Research in Applied Mechanics, 9(1), 31–39. Retrieved from https://akademiabaru.com/submit/index.php/aram/article/view/1724