Yazar "Al-Khafaji, Falah" seçeneğine göre listele
Listeleniyor 1 - 2 / 2
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Fatigue characterization of eco-composites with natural fiber for transtibial prosthetic socket(American Institute of Physics Inc., 2023) Al-Khafaji, Falah; Alaiwi, YaserEco-composites is a natural fiber (NF) reinforced composites that are the focus of numerous scientific and research projects, those composites are studied in the present paper for manufacturing prosthetic sockets where natural and synthetic fibers were used as reinforcement. The composite materials utilized here are hybrid ones made of natural fibers like bamboo and kenaf as well as laminating polyurethane resin and synthetic fibers like carbon fiber and Perlon (80:20). The current study investigated the effects of various fiber types on the mechanical characteristics of hybrid eco-composites. The materials were created in three groups, each one with ten layers. The first group consists of four Perlon layers, two carbon fibers, and four Perlon layers. The second group includes two layers each of Perlon, kenaf, carbon fiber, and Perlon. The third one has two Perlon layers as well as two layers each of bamboo fiber, carbon fiber, and Perlon. The research also includes three different levels of interface pressure measurement between the socket and the limb. The pressure between the socket and the residual limb was measured by placing sensors on four different areas of the residual limb (Anterior, Lateral, Posterior, and Medial). The patient was a male who was 26 years old, weighed 73 kg, was 175 cm in length, and had his right leg amputated. The interface pressure is measured, applied to the socket, and mathematically analyzed using the ANSYS software to assess the stresses, deformation, and safety factors generated during the movement. The results showed, as compared to the other two groups, that the third group's yield stress, ultimate stress, elasticity modules, and fatigue are the best.Öğe Sustainable Prosthetic Socket Design: A Study of Eco-Composites and Natural Fibers for Transtibial Amputees(American Institute of Physics, 2024) Al-Khafaji, Falah; Hamzah, Mohsin N.; Alaiwi, YaserThis paper examines the use of eco-composites for manufacturing prosthetic sockets, especially those reinforced by natural fibers. The composites under investigation are hybrid, with a matrix of laminating polyurethane resin (in an 80:20 ratio) combined with bamboo and kenaf natural fibers, as well as carbon fiber and perlon synthetic fibers. The mechanical properties of the eco-composites are studied with a focus on the impact of different fiber types. The composite materials were constructed in three groups, each consisting of ten layers. The first group had four perlon, two carbon fiber, and four perlon layers; the second group had two layers each of perlon, kenaf, carbon fiber, and perlon; and the third group had two perlon layers, as well as two layers each of bamboo fiber, carbon fiber, and perlon. In addition, the research included the utilization of sensors placed on four areas of the residual limb (anterior, posterior, lateral, and medial) to gauge the interface pressure between the socket and the limb. A 26-year-old male patient who had undergone a right leg amputation participated in the study. Three different levels of interface pressure were measured and become input to ANSYS 14.5 software to evaluate the stresses, deformation, and safety factors during movement. The study found that the third group exhibited the best yield stress, ultimate stress, elasticity modules, and fatigue compared to the other two groups. Additionally, the patient's gait cycle while using a conventional prosthetic and the composite prosthetic socket was analyzed using a force plate. The study found no significant difference in parameters between the two cases. However, the use of the composite prosthetic socket resulted in less obvious and more acceptable differences between the left and right limbs. © 2024 American Institute of Physics Inc.. All rights reserved.