Publications
Modeling and analysis of a prosthetic foot: A numerical simulation case study
Mar 7, 2024Journal Bio-Medical Materials and Engineering
Publisher co-other
DOI ineering 35 (2024) 401–414 DOI 10.3233/BME-240052
Issue 401–414 DOI 10.3233/BME-240052
Volume 35 (2024) 401–414
BACKGROUND: The prosthetic foot is an essential component of the prosthetic limb used by people who suffer from amputation. The prosthetic foot or limb is expensive in developing countries and cannot be used by most people with special needs. OBJECTIVE:Inthisstudy,anuncomplicated prosthetic foot is designed that can be manufactured at low costs using 3D printer technology and can be provided to a wide range of amputees. The foot was designed using CAD software and analyzed using ANSES. METHODS: Carbon fiber material was chosen to be suitable for the manufacturing process using 3D printer technology. The selected material was tested in tensile and fatigue tests to determine its mechanical properties. The numerical analysis was carried out assuming the use of an artificial foot by a patient weighing 85 kg. RESULTS:Theresultsshowedthatthematerialproposedformanufacturinghasgoodmechanicalpropertiesforthisapplication. The results of the engineering analysis also showed that the model has successfully passed the design process and is reliable for use by amputees. CONCLUSION: The success model designed in this study in the numerical analysis process gives reliability to the use of this design to manufacture the prosthetic foot.
Designing and manufacturing a flexible heel of a printed prosthetic foot for rehabilitation
Feb 1, 2024Journal International Review of Applied Sciences and Engineering
Publisher participant other
DOI DOI: 10.1556/1848.2024.00930
Issue DOI: 10.1556/1848.2024.00930
Volume DOI: 10.1556/1848.2024.00930
The prosthetic feet available in the market are characterized by high costs and are made of carbon fiber materials, fiberglass, or silicone-coated wood. This study aims to design and manufacture a prosthetic foot to enhance biomechanical performance and user comfort and mimic the natural movement of the human foot; the foot will be designed and manufactured from low-cost materials, namely carbon fiber filaments, using 3D printer technology. The practical part consists of tensile, fatigue tests, and manufacturing the foot using a 3D printer. In this study, the ANSYS program will also analyze the designed model numerically to determine the stresses generated when applying the assumed body weight to the foot model. The results showed that the model is successful in terms of design and does not suffer any mechanical failure during use, in addition to the success of the selection of the material used in the manufacturing process due to its mechanical properties, where the yield stress value 5 36.4MPa, the ultimate stress value 5 58.39 Mpa and Young’s modulus 5 1.23GPa.
Effect of Rotational Speed for Friction Stir Welding/Processing on the Mechanical Properties and Microstructure of 5083-O Aluminum Alloy
Feb 4, 2023Journal Proceeding of the 1st International Conference on Manufacturing Engineering Technology (IConMET 2021)
Publisher co-other
DOI AIP Conference Proceedings
Issue (IConMET 2021)
Volume (IConMET 2021)
Abstract. This study looked into the effects of rotational speed on the mechanical and microstructural properties of 5083-O aluminum alloy welded using friction stir welding (FSW) and processing (FSP). 750, 1250, and 1750 rpm rotation speeds, and a steady travel speed of 50 mm/min. The welding and processing joints' tensile strength properties, microhardness, and microstructure were investigated and compared to the base alloy. The rotation of the sub-grains, which produces dynamic recrystallization in friction stir welding, causes fine grains to appear in the weld region. For friction stir processing (FSP), the rotation speed is increased to 94.7 percent of the base metal's ultimate tensile strength.