Numerical Analysis and Mechanical Properties for Below Knee Prosthetic Socket

Authors

  • Ammar I. Kubba, Saif M. Abbas

Abstract

In this study, two sets of composite materials, in which used to make the socket for a transtibial amputation. The mechanical properties for these two sets were collected, then used in the numerical investigation to find the equivalent stress and safety factor. The samples were prepared and casted by using vacuum pressure system. The composite material matrix was Lamination and reinforced material as perlon or carbon fibers for the two sets. The results indicated that the mechanical properties of the first group represented by the perlon fibers were: ?y= 41Mpa, ?ult=44MPa and E=0.8 GPa. The second group, represented by carbon fibers, showed the following results ?y=142Mpa, ?ult=163MPa, and E=1.6 GPa. The interface pressure test between the stump and the socket was done and the highest-pressure value which found on the posterior side of the amputation is 500kPa. Also, in the lateral side of stump region is 350kPa. The safety factor for second designed group with carbon fiber is acceptable for most of the socket except the small area around the adaptor, which need more reinforcement because it has a safety factor around 1.

Published

2020-11-01

Issue

Section

Articles