Numerical and experimental investigation of hinged Ankle-Foot-Orthoses (AFO) using composite laminate material for Cerebral Palsy patient

Khandagale, Bhagyashree D.; Pise, Uday V.

doi:10.1016/j.matpr.2022.02.554

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…The primary drawback of glass fiber is its lower elastic modulus than that of carbon fiber, which results in less stiffness. [168] Carbon fiber AFOs (CF AFOs) outperform plastic AFOs in terms of energy storage capacity, lightweight, and durability; nevertheless, they are more expensive. [169][170][171] The typical elastic modulus of a CF AFO is 80 times greater than that of PP used in thermoplastic AFOs.…”

Section: Polymer-based Compositesmentioning

confidence: 99%

Materials and Manufacturing for Ankle–Foot Orthoses: A Review

Nouri

Wang

et al. 2023

Adv Eng Mater

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Ankle‐foot orthoses (AFOs) assist patients with gait impairment by correcting ankle and foot deformities, restoring mobility, reducing pain, and providing protection and immobilization. AFOs can beneficially manage various types of gait pathologies, including foot drop, crouch gait, equinus gait, and stiff knee gait. AFOs are produced in prefabricated or custom‐made forms in various designs. The selection criteria for the fabrication of an AFO are the duration of usage, the amount of applied force, the degree of axial loading, the patient’s skin condition, and the cost. The accessibility of diverse materials in the past century has greatly advanced orthoses. The ideal orthotic materials must be light, stiff, and strong, and are made of plastics, metals, polymer‐based composites, leather, or a hybrid of different materials. Deeper understanding of the materials employed in the fabrication of AFOs will lead to more advanced and efficient orthoses, which can improve patients’ ability to ambulate in the real world. The present review provides insight into the various materials utilized for the fabrication of AFOs and describes the benefits and challenges associated with these materials. An attempt has also been made to highlight typical gait pathologies and design concepts in response to these.This article is protected by copyright. All rights reserved.

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Section: Polymer-based Compositesmentioning

confidence: 99%

Materials and Manufacturing for Ankle–Foot Orthoses: A Review

Nouri

Wang

et al. 2023

Adv Eng Mater

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“…The viability of the proposed method was examined for a 67-year-old patient with foot drop following paraparesis caused by severe discarthrosis after spinal stabilization surgery. In another study, Khandagale et Pise [31] aimed to manufacture an ankle-foot orthosis (AFO) using composite materials to increase its strength and durability. Due to the complex nature of the ankle and leg section, they opted for 3D modeling and printing to facilitate the design and production process for this specific component.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation to Optimize the Manufacturing Parameters of Ankle–Foot Orthoses Using Composite and Titanium Nanoparticles

Khalaf,

Ben Amor,

Louhichi

et al. 2024

J. Compos. Sci.

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The optimum structural characteristics of lamination materials used in the fabrication of prosthetic and orthotic parts were investigated in this work. Optimization was chosen based on high yields, ultimate stresses, and bending stress properties. The ideal materials were determined through the use of an RSM (response surface methodology) which considers three factors: Perlon reinforcement, a layer of glass fiber, and the percentage of titanium nanoparticles combined with the matrix laminating resin. The RSM approach suggests thirteen samples by manipulating two variables: the Ti nano percentage and the number of Perlon layers. Laminating materials, defined by RSM methods and treated with a vacuum system, were submitted to a series of tests. The ideal lamination material was compared with the laminations from the initial study through the use of tensile, flexural, and fatigue testing according to ASTM standards. Tests carried out using version 10.0.2 of Design Expert software showed that, compared with the 12 other laminations, the one with 10 Perlon layers and 0.75 percent Ti nano had the highest overall yield and ultimate and bending loads. Fatigue eventually showed that stamina tension constraints were applied for optimal lamination, compared to ten Perlon lamination layers. We additionally tested the fatigue life of the best material and compared it with the available materials used at prosthetics and orthotics centers.

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“…According to the findings of these investigations, nanoparticles have the potential to greatly improve the mechanical characteristics and performance of AFOs. Using composite materials, Khandagale and Pise 2022 (28) sought to increase the strength and longevity of an ankle-foot orthosis (AFO). The complicated anatomy of the leg and ankle led the researchers to employ 3D modeling and printing.…”

Section: Introductionmentioning

confidence: 99%

Characterization and Fabrication of Ankle Foot Orthoses using Composite with Titanium Nanoparticles

Khalaf,

Ben Amor,

Louhichi

2024

NJES

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Orthoses and prostheses were Chosen and laminated based on their high Yield, ultimate stresses, bending stresses, and fatigue limit. Response Surface Methodology (RSM) was utilized to find the best values for two parameters reinforcement perlon fiber and percent of Titanium Nanoparticle coupled with the matrix resin during optimization. The response surface methodology combined the expertise of mathematicians and statisticians to construct and analyze experimental models. Using this method, we identified 13 different lamination samples comprising a wide range of perlon number and Ti nano Wt% in their Perlon layer composition. All lamination materials defined by RSM methods and produced by a vacuum system were subjected to a battery of tests, with fatigue tests performed on the ideal laminating material in contrast to laminations created in the first study (Tensile test, Bending test, and Fatigue tests according to the ASTM D638 and D790 respectively). In comparison to the other 12 laminations tested using Design Expert version 10.0.2, the lamination with ten perlon layers and 0.75 percent Ti nano proved to be the strongest overall in terms of Yield, ultimate, and bending loads. This study used composite materials and titanium nanoparticles to characterize and fabricate ankle foot orthoses. Strength in bending should amount to about 70 MPa, around 85 MPa in tensile tension. Two empirical quadratic equations for the models of peak bending strength and maximum tensile stress with 95% confidence were created using the response surface approach and analysis of variance within the design of experiments software.

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Numerical and experimental investigation of hinged Ankle-Foot-Orthoses (AFO) using composite laminate material for Cerebral Palsy patient

Cited by 3 publications

References 13 publications

Materials and Manufacturing for Ankle–Foot Orthoses: A Review

Materials and Manufacturing for Ankle–Foot Orthoses: A Review

Experimental Investigation to Optimize the Manufacturing Parameters of Ankle–Foot Orthoses Using Composite and Titanium Nanoparticles

Characterization and Fabrication of Ankle Foot Orthoses using Composite with Titanium Nanoparticles

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