[F-2-1] Friction Characteristics of Textured Metal Surfaces by Vibration-assisted Microcutting in Dry Sliding 〇Jun Shimizu1, Tomotaka Nakayama1, Takeyuki Yamamoto1, Hirotaka Ojima1, Teppei Onuki1, Libo Zhou1 (1.Ibaraki University) Keywords:Functional surface、vibration-assisted cutting、friction、wear、