VU, H. C. EFFECT OF SLIDING AND HAMMERING CONTACT FOR CRACK GENERATION AND FRACTURE TOUGHNESSS IN SCRATCH TEST. Vietnam Journal of Science and Technology, [S. l.], v. 57, n. 6A, p. 70, 2020. DOI: 10.15625/2525-2518/57/6A/14095. Disponível em: https://vjs.ac.vn/index.php/jst/article/view/14095. Acesso em: 28 nov. 2021.