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  4. Investigating the Impact of Carbon Fiber as a Wheelchair Frame Material on Its Ability to Dissipate Kinetic Energy and Reduce Vibrations
 
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Investigating the Impact of Carbon Fiber as a Wheelchair Frame Material on Its Ability to Dissipate Kinetic Energy and Reduce Vibrations

Type
Journal article
Language
English
Date issued
2024
Author
Wieczorek, Bartosz
Warguła, Łukasz
Adamiec, Jarosław
Sowa, Tomasz
Padjasek, Michał
Padjasek, Łukasz
Sydor, Maciej 
Faculty
Wydział Leśny i Technologii Drewna
Journal
Materials
ISSN
1996-1944
DOI
10.3390/ma17030641
Web address
http://www.mdpi.com/1996-1944/17/3/641
Volume
17
Number
3
Pages from-to
art. 641
Abstract (EN)
Using a wheelchair over uneven terrain generates vibrations of the human body. These vibrations result from mechanical energy impulses transferred from the ground through the wheelchair components to the user’s body, which may negatively affect the quality of the wheelchair use and the user’s health. This energy can be dissipated through the structure of the wheelchair frame, such as polymer and carbon fiber composites. This article aims to compare a wheelchair with an aluminum alloy frame and a carbon fiber frame in terms of reducing kinematic excitation acting on the user’s body. Three wheelchairs were used in the study, one with an aluminum alloy frame (reference) and two innovative ones with composite frames. The user was sitting in the tested wheelchairs and had an accelerometer attached to their forehead. The vibrations were generated by applying impulses to the rear wheels of the wheelchair. The obtained results were analyzed and compared, especially regarding differences in the damping decrement. The research shows that using modern materials in the wheelchair frame has a beneficial effect on vibration damping. Although the frame structure and material did not significantly impact the reduction in the acceleration vector, the material and geometry had a beneficial effect on the short dissipation time of the mechanical energy generated by the kinematic excitation. Research has shown that modern construction materials, especially carbon fiber-reinforced composites, may be an alternative to traditional wheelchair suspension modules, effectively damping vibrations.
Keywords (EN)
  • vibration damping

  • vibrations

  • damping decrement

  • vibration transmission

  • impact on the human body

License
cc-bycc-by CC-BY - Attribution
Open access date
January 29, 2024
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