TRI MULYO, B.; YUDIONO, H. Toughness analysis of pineapple leaves fiber composite as alternative material for SNI helmet. Journal of Mechanical Engineering and Sciences, [S. l.], v. 13, n. 4, p. 5961–5972, 2019. DOI: 10.15282/jmes.13.4.2019.16.0472. Disponível em: https://journal.ump.edu.my/jmes/article/view/573. Acesso em: 28 mar. 2024.