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ProSI 2022 Structural integrity of 3D-printed prosthetic sockets - An experimental study for paediatric above-knee applications.pdf (767.98 kB)

Structural integrity of 3D-printed prosthetic sockets: an experimental study for paediatric above-knee applications

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conference contribution
posted on 2024-01-09, 17:28 authored by Theodoros Marinopoulos, Simin LiSimin Li, Vadim SilberschmidtVadim Silberschmidt
Introduction of 3D printing into manufacturing of prosthetic sockets raised a question of structural integrity of such products. Prosthetic sockets, as customized products, cannot be directly included in a standardized testing protocol like other major parts of the prosthesis; this makes their mechanical assessment challenging. In this study, a prototype testing rig was developed according to BS EN ISO 10328, able to recreate the loading conditions of the early stance of the amputee gait on a paediatric transfemoral socket. A variety of above-knee prosthetic socket designs were 3D printed in PLA and carbon-fiber-reinforced nylon. The sockets were tested under static compressive load using the developed rig together with a silicone-rubber phantom limb with mechanical properties similar to those of the human tissue. New load requirements were calculated for the case of a 14-year-old male weighting in the 98th percentile. After initial design improvements, the 3D printed sockets were able to sustain loads up to five times the weight of the user without failing.

Funding

Government of the Russian Federation under the mega-grant program, contract no. 075-15-2021-578, 31 May 2021, hosted by Perm National Research Polytechnic University

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Procedia Structural Integrity

Volume

37

Pages

139 - 144

Source

4th International Conference on Structural Integrity (ICSI 2021)

Publisher

Elsevier BV

Version

  • VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This is an Open Access Article. It is published by Elsevier under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (CC BY-NC-ND). Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2022-02-22

Copyright date

2022

ISSN

2452-3216

eISSN

2452-3216

Language

  • en

Editor(s)

Pedro Moreira; Paulo Tavares

Location

Online

Event dates

30th August 2021 - 2nd September 2021

Depositor

Prof Vadim Silberschmidt. Deposit date: 1 January 2024

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