فصلنامه
نوع مقاله : مقاله پژوهشی
نویسندگان
1 مهندسی مکانیک ،دانشکده مکانیک ،داشگاه صنعتی اراک، شهر اراک، ایران
2 گروه مکانیک،دانشکده مکانیک ،دانشگاه صنعتی اراک،شهر اراک،ایران
3 گروه مکانیک ،دانشکده مکانیک،دانشگاه تربیت مدرس تهران،تهران،ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
Airborne particulate matter, such as fine dust and aerosols, poses serious threats to respiratory health. Conventional polymer filters suffer from limited reusability and sterilization challenges. This study presents the design, fabrication via Selective Laser Melting (SLM), and characterization of a cylindrical porous filter made from Ti-6Al-4V alloy with a graded conformal Gyroid topology. The structure features graded channel spacings (inner wall: 206 µm, mid-region: 396 µm, outer wall: 463 µm; weighted mean: 415 µm) and an effective open porosity of ~65%. The design was optimized in nTopology software to enhance cell overlap and particle trapping while maintaining airflow permeability. The sample (OD=15 mm, ID=9 mm, H=10 mm) was fabricated from Ti-6Al-4V powder (15–45 µm) and characterized after stress-relief annealing at 600°C. Results include optical metallography (acicular α phase in β matrix), metallographic measurements (mean layer spacing of 415 µm), Vickers microhardness (mean 327 HV), bulk density (4.18 g/cm³), and bulk porosity (~5.5%).
کلیدواژهها English
