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Anthropomorphic model rigid loading indenter with embedded sensor development for wheelchair cushion standard testing.
Chung, Cheng-Shiu; Grindle, Garrett G; Brown, Joshua D; Gebrosky, Benjamin; Carrigan, Wei; Nuthi, Pavan; Wijesundara, Muthu B J; Cooper, Rory A.
Afiliación
  • Chung CS; Human Engineering Research Laboratories, University of Pittsburgh and US Department of Veterans Affairs, Pittsburgh, PA, USA.
  • Grindle GG; Human Engineering Research Laboratories, University of Pittsburgh and US Department of Veterans Affairs, Pittsburgh, PA, USA.
  • Brown JD; Human Engineering Research Laboratories, University of Pittsburgh and US Department of Veterans Affairs, Pittsburgh, PA, USA.
  • Gebrosky B; Human Engineering Research Laboratories, University of Pittsburgh and US Department of Veterans Affairs, Pittsburgh, PA, USA.
  • Carrigan W; University of Texas at Arlington Research Institute, Fort Worth, TX, USA.
  • Nuthi P; University of Texas at Arlington Research Institute, Fort Worth, TX, USA.
  • Wijesundara MBJ; University of Texas at Arlington Research Institute, Fort Worth, TX, USA.
  • Cooper RA; Human Engineering Research Laboratories, University of Pittsburgh and US Department of Veterans Affairs, Pittsburgh, PA, USA.
Med Biol Eng Comput ; 61(2): 329-340, 2023 Feb.
Article en En | MEDLINE | ID: mdl-36417054
Develop an anthropomorphic model cushion rigid loading indenter with embedded sensors (AMCRLI-ES) to assess compression and shear forces at key locations such as trochanters and ischial tuberosities. The sensor design was optimized using finite element analysis. The AMCRLI-ES was designed with the same dimensions as specified in ISO 16840-2 tests. The AMCRLI-ES is divided into eight independent sections, and each section consists of one 3-axis load cell sensor to measure compression and shear forces normal to the compression direction. Six commercial cushions were tested using the AMCRLI-ES with standard ISO 16840-2 testing procedures. Statistical differences were found for energy dissipation between cushions. Statistical differences (p < 0.001) were found in all stiffness values. Test results showed that energy dissipation (ED) was correlated with hysteresis at 500 N with moderate to high Pearson product correlation r = -0.537, p = 0.022. The hysteresis at 250 N did not show a statistical correlation with ED. The AMCRLI-ES demonstrated the ability to measure compression and shear forces at key locations on the cushion including the thigh, trochanter, ischial tuberosity, and sacral area. It provides in-depth information about how the weight was distributed on the cushions.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Silla de Ruedas / Úlcera por Presión Límite: Humans Idioma: En Revista: Med Biol Eng Comput Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Silla de Ruedas / Úlcera por Presión Límite: Humans Idioma: En Revista: Med Biol Eng Comput Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos