Abstract
Lower or upper limb prosthetics are a solution for people who have a limited ability to walk due to amputation. One of the most crucial parts of these prosthetics is a prosthetic foot which is usually made of elastomeric materials. The prosthetic foot is a replaceable part that has to be replaced at a particular time due to wear or other damages. Therefore, the mechanical properties of the elastomeric materials in the prosthetic feet are critical to determine the product's lifetime. In this study, the mechanical properties of elastomeric materials in prosthetic feet are investigated. Three types of prosthetic feet products are used, namely import A, import B, and local C. Five tests are carried out, i.e., density, hardness, tensile, tear, and compression set tests. The results show that the density of the local C is two times higher than those of imported products A and B. The hardness of the imported product A is the highest, while the hardness of the local C and import B are similar. The tensile strength and elongation at break of the local C show the highest results. All elastomers have no significant difference in tear resistance. The compression set tests show that the local product C has the smallest result compared to the other imported products, meaning that it has a good ability to prevent permanent deformation.
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