نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه طراحی کاربردی، دانشکده مکانیک، دانشگاه صنعتی نوشیروانی بابل
2 گروه مهندسی مکانیک، دانشکده مهندسی، دانشگاه فردوسی مشهد
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Today, the use of additive manufacturing has grown significantly in various industries, including the medical field, and one of its most recent applications in this field is the production of lumbar fusion cage implants. Considering the high impact of interlayer adhesion on the final life of parts made by 3D printing method, in this study, using finite element analysis to predict fatigue failure in lower back vertebra implants made by 3D printing has been studied. In this regard, using the fused deposition modeling (FDM) method, several samples of standard tensile test parts and lower back vertebrae have been made, and mechanical strength tests have been performed. The material used to carry out this research is polylactic acid, with this material, in both horizontal and vertical directions, the standard tensile and fatigue samples with the characteristics of layer thickness of 0.3 mm, nozzle diameter of 0.4 mm, print angle 45/45 and the production speed of 20 mm/s have been printed. The obtained results show that the printing alignment of the parts is very effective in the fatigue life of the parts and the finite element model predicts the fatigue life of the parts with acceptable accuracy.
کلیدواژهها [English]
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