ISO 16840-2:2007 load deflection and hysteresis measurements for a sample of wheelchair seating cushions

Abstract

Load deflection and hysteresis measurements were made on 37 wheelchair seating cushions according to ISO 16840-2:2007. Load deflection plots for all 37 cushions are reported and fundamental aspects of graph interpretation discussed. ISO hysteresis data are also reported and interpretation discussed.

Keywords: Cushion; Foam; Hysteresis; ISO; ISO 16840; ISO 16840-2; Load deflection; Mechanical characteristics; Pressure; Pressure ulcer; Seating; Standard; Tissue integrity; Wheelchair.