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Sitting Biomechanics Laboratory
Part of the |
Durability and Stability Test for iPUPc
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Durability test for iPUPc system A vertical shaker was used to generate repeated vertical translations to test the durability of the iPUPc on wheelchair, with simulated body weight applied. (simulating average use over a one year period) Test 1. A daily travel of 1600 cycles (approx. 1 mile) will subject the wheelchair to 584,000 cycles over a one year period. The test is being performed for the wheelchair for 584,000 cycles with ±0.5” vertical translation. Test 2. A daily traveled down a curb (2” height) approximately 10 times/day. The test is being performed for the wheelchair for 3650 impacts. After each protocol, the mounting mechanisms between the iPUPc and the wheelchair, between the BPS and FPS, and between lumbar-sacral support/pelvic stabilizers and the backrest, should be inspected for any looseness and failure.After the inspection, the iPUPc should be run continuously for 2 hours to determine whether the system is fully functioning.
results:The iPUPc chair remained in good working order. |
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Stability Test Evaluating the influence of the iPUPc system on wheelchair stability: The test has been performed based on ISO 7176-1 for iPUPc system on two popular wheelchair models: Quickie Titanium and Sunrise A4. A 100 Kg Dummy was used to simulate the load distribution on the wheelchair frame. The chair was tilted in the forward, rearward, left and right directions, until the wheels of the chair lift off the surface. |
Tipping angles (Mean±SD) for Native, Normal and WO-BPS configurations in one Wheelchair (Sunrise Iris) in Most and Least Stable configurations for Rearward, Forward, Left and Right directions, in both Braked and Un-braked conditions. Data were obtained for the 100kg dummy.
Finding:The iPUPc did not significantly affect the overall wheelchair static stability.
Last updated
May 25, 2008 by Makhsous.
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