A Conceptual Design and Control of a Novel Powered Ankle–Foot Prosthesis (RoMicP™) for Heavy Amputees

Liu, Jinjing; Osman, Noor Azuan Abu; Kouzbary, Mouaz Al; Kouzbary, Hamza Al; Razak, Nasrul Anuar Abd; Shasmin, Hanie Nadia; Arifin, Nooranida

doi:10.1007/978-3-030-90724-2_28

Cited by 1 publication

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“…Compared with the complete conceptual design of the frame part reported in our previous study [ 35 ], the structure is simplified only to contain the main functional supporting part related to the assembly of the adaptor, as shown in Figure 6 . In the top view, the contact area between the adaptor and the 3D-printed part is highlighted in yellow.…”

Section: Methodsmentioning

confidence: 99%

Effect of Infill Parameters on the Compressive Strength of 3D-Printed Nylon-Based Material

et al. 2023

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3D printing is the most suitable method to manufacture the frame parts of powered ankle-foot prostheses but the compressive strength of the 3D-printed part needs to be ensured. According to the compression test standard ASTM D695, the effect of infill pattern and density, which is transferred to the mass of the standard specimen, on the compressive strength is investigated with a carbon fiber-reinforced nylon material. With the same infill pattern, specimens with more mass have a higher compressive strength. With the same mass, specimens with triangular fill have a higher compressive strength than those with rectangular and gyroid fills. Compared with specimens with a solid fill, specimens with a triangular fill can also provide more compressive strength in a unit mass. According to the results of standard specimens, following the requirement of strength and lightweight, 41% triangular fill is selected to manufacture the supporting part of a powered ankle-foot prosthesis. Under a compressive load of 1225 N, the strain of the assembly of the standard adaptor and the 3D-printed part is 1.32 ± 0.04%, which can meet the requirement of the design. This study can provide evidence for other 3D-printed applications with the requirement of compressive strength.

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Section: Methodsmentioning

confidence: 99%