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2 2025

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Mechanical performance and fatigue analysis of transfemoral prosthetic socket

Ridha Hind Dhia’a, Abbas Saif M., Sadiq Ghanim Sh., Ibraheem Marwa Qasim

Advances in Science and Technology. Research Journal

2025

Vol. 19, no. 4

377--385

This work is studying the simulation and testing prosthetic socket made from new arrangement of composite materials. two composite arrangements. The first arrangement is consisting of ten layers of carbon fiber while the second group is made of ten Perlon layers. This research prosthetic is for a 20-year-old female patient with a height of 155 cm and a reported weight of 75 kg. The results of the mechanical properties explained (Ϭult) and (Ϭy) for group 2 was 145 MPa and 137 MPa, while for group 1 was 285 MPa and 280 MPa. The limit of group (2) fatigue was 145 MPa and group (1) was 78 MPa. The interface pressure applied on the stump was measured using F-Socket for four regions of the stump; this data is (Anterior 495kPa, Lateral 427kPa, Posterior 384kPa and Medial 351kPa). The fatigue safety factor was found using the Ansys14.5 software, it was found that the fatigue safety factor of the prosthetic limb socket which made of carbon fiber is (1.2) which could be considered sufficient in terms of design requirements. On the other hand, the fatigue safety factor of the prosthetic limb which is made of Perlon fibers is (0.096) where it considered as a failure.

Effect of zinc oxide nanoparticles on the mechanical properties of the recycle acrylonitrile butadiene styrene polymers

Al-Kasob Bashar Dheyaa Hussein, Sadiq Ghanim Sh.

Advances in Science and Technology. Research Journal

2025

Vol. 19, no. 6

84--93

One of the primary issues with waste management and environmental preservation in recent years has been the recycling of plastic. Polymer materials are used in many aspects of daily life and business. In addition to their extended use, plastic garbage became a problem since it was a persistent and dangerous waste after it was stopped. Reusing polymeric materials maximises waste utilization to create consumable items and creates a path of valorisation, or a second life. The 3D printing sector is one that is rapidly growing. A variety of thermoplastic materials, including recycled ones, can be used to make printable filaments. The article details a new application for material recovered from the recycling of acrylonitrile-butadiene-styrene (ABS): filaments that may be used in 3D printing were made by combining material gathered from 3D printing waste with machine filament waste. Using a universal testometer, samples of recycled ABS (rABS) and virgin ABS (vABS) from printing waste were mixed at seven distinct concentrations. The recycled polymer ABS was mixed with varying concentrations of zinc oxide nanoparticles (ZnO nano), and the impact of these particles on the mechanical characteristics of the polymer was investigated. After mixing the recycle polymer with nano filler ZnO at 3% concentration, fatigue tests were conducted on it and choose the life of recycle polymer.