Application of 3D printing technology to the components subjected to significant mechanical loads, using the example of a prosthetic climbing foot prototype

Abstract

The paper describes the results of a study aimed at identifying the mechanical parameters of a prosthetic foot designed for wall climbing. The prosthesis was manufactured with an additive method using FDM/MEX [Fused Deposition Modelling/ Material Extrusion] technology. At the initial stage of the research, uniaxial tensile and three-point bending tests were carried out on specimens made of six different materials to select a material for the production of the prosthetic component. Based on the results, a functional prosthetic foot prototype was designed and fabricated from two selected polymers. The final step of the study was to subject the prosthesis to a cyclic bending test on a dynamic testing machine equipped with a newly-designed adapter. The functionality of the fabricated component was also confirmed on a climbing wall, under controlled conditions of use. Based on the tests and analysis conducted, it was concluded that the created prosthesis fulfills its purpose and provides more comfort during climbing than an everyday prosthesis, while keeping the production cost low. Keywords: mechanical engineering, additive manufacturing, 3D printing, prosthetic foot, prosthesis, climbing

Keywords

• mechanical engineering
• additive manufacturing
• 3D printing
• prosthetic foot
• prosthesis
• climbing