Wheelchair seating / Wheelchair postural support devices – Static strength, impact strength and repitive load strengths for postural suppport devices
ISO 16840-3 specifies suitable test methods for determining the resistance of wheelchair accessories for postural support to impacts, static loads and repeated loading forces, including all components that improve posture in the wheelchair, such as foot, head and arm rests, anterior trunk and pelvis support devices and complete seating systems.
Many of the tests represented in this standard were derived from ISO 7176-8. They usually involve mounting the PSD on rigid test fixtures to simulate the application on any wheelchair. These rigid test fixtures enable testing under worst-case conditions that are repeatable without the risk of damaging multiple wheelchairs.