نوع مقاله : مقاله پژوهشی
نویسندگان
1 استادیار گروه مهندسی مکانیک، دانشکده فنی و مهندسی، دانشگاه میبد، میبد، ایران
2 دانشیار گروه مهندسی مکانیک، دانشکده مهندسی مکانیک، دانشگاه صنعتی امیرکبیر، تهران، ایران
3 استاد گروه مهندسی مکانیک، دانشکده مهندسی مکانیک، دانشگاه صنعتی امیرکبیر، تهران، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Due to its unique geometry, achieving uniform machining of the metallic femoral head in artificial hip joints has always been a technical challenge. This study presents an effective solution by designing and developing an innovative inverse replica fixture to enhance the abrasive flow machining (AFM) process. First, an industrial-scale AFM prototype was manufactured, followed by the development of a fixture tailored to the geometry of the femoral head. The performance of the proposed device and method was evaluated by analyzing the influence of key AFM parameters hydraulic extrusion pressure, number of machining cycles, and SiC abrasive mesh size on the average percentage change in surface roughness (%∆Ra) of the artificial femoral head, made of 316L stainless steel. The results demonstrate that the proposed device and method are highly effective and efficient in achieving uniform machining of the metallic femoral head. This improvement was confirmed by a 90.61% increase in the %∆Ra index. Furthermore, surface morphology analysis revealed that the proposed method produces a smooth and uniform surface without surface damages, thereby enhancing the surface integrity of the artificial hip joint. The findings of this study provide a practical and efficient operational strategy to overcome machining challenges for complex surfaces in orthopedic implants.
کلیدواژه‌ها [English]
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