%0 Journal Article %T Effect of graphene on the creep and stress relaxation behaviors of epoxy-nanocomposite in viscoplastic deformation regime %A BAKBAK, O. %A ÇOLAK, Ã. %J Sigma Journal of Engineering and Natural Sciences %D 2024 %V 42 %P 49-56 %R 10.14744/sigma.2024.00007