Shahrood University of Technology Journal of Solid and Fluid Mechanics 2251-9475 15 6 2027 01 21 Polishing of artificial femoral head with coarse sisal fiber-based tool Polishing of artificial femoral head with coarse sisal fiber-based tool 509 519 3775 10.22044/jsfm.2026.16089.3963 FA Yahya Choopani Assistant Professor, Department of Mechanical Engineering, Meybod University Mohsen Khajehzadeh Associate Professor, Mechanical Engineering Department, Amirkabir University of Technology Mohammad Reza Razfar Full Professor, Mechanical Engineering Department, Amirkabir University of Technology Journal Article 2025 04 19 In this study, fiber-assisted polishing is presented as a method for eliminating undesirable defects caused by abrasives on the surfaces of sensitive components such as prostheses, lenses, and turbine blades. To this end, a polishing tool based on coarse sisal fibers was first fabricated. Subsequently, the performance of this tool on the surface roughness ratio and polishing rate of an artificial femoral head made of 316L stainless steel was investigated. The results indicate that the coarse sisal fiber-based polishing tool effectively and efficiently finishes the surface of the artificial femoral head. Microscopic observations revealed that the main finishing mechanism is the gradual fracturing of sisal fibers and the formation of self-adaptive sisal fibrils that act as soft abrasives. Over a period of 2.5 hours, this process transitioned from the roughing phase to nano-finishing, producing a surface with an average surface roughness (Ra) of 36.96 nm and a mirror-like reflection on the femoral head. Consequently, the sisal fiber-based polishing tool is proposed as an efficient method for surface modification of components with complex geometries in the medical, aerospace, and automotive industries. In this study, fiber-assisted polishing is presented as a method for eliminating undesirable defects caused by abrasives on the surfaces of sensitive components such as prostheses, lenses, and turbine blades. To this end, a polishing tool based on coarse sisal fibers was first fabricated. Subsequently, the performance of this tool on the surface roughness ratio and polishing rate of an artificial femoral head made of 316L stainless steel was investigated. The results indicate that the coarse sisal fiber-based polishing tool effectively and efficiently finishes the surface of the artificial femoral head. Microscopic observations revealed that the main finishing mechanism is the gradual fracturing of sisal fibers and the formation of self-adaptive sisal fibrils that act as soft abrasives. Over a period of 2.5 hours, this process transitioned from the roughing phase to nano-finishing, producing a surface with an average surface roughness (Ra) of 36.96 nm and a mirror-like reflection on the femoral head. Consequently, the sisal fiber-based polishing tool is proposed as an efficient method for surface modification of components with complex geometries in the medical, aerospace, and automotive industries. https://jsfm.shahroodut.ac.ir/article_3775_4f8ef22046575a71929fba9f84e3b054.pdf