Simulation of knee implants made of Ti6Al4V material during walking Djoko Kustono, Retno Wulandari, Andoko, Poppy Puspitasari, Galih Adhi Kurniawan and Agus Dwi Putra MATEC Web Conf., 204 (2018) 07015 Published online: 21 September 2018 DOI: 10.1051/matecconf/201820407015