The effects of wheelchair-seating stiffness and energy absorption on occupant frontal impact kinematics and submarining risk using computer simulation

Bertocci, Gina; Souza, Ana Paula Ramos de; Szobota, Stephanie

doi:10.1682/jrrd.2003.03.0127

Cited by 7 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The cycling consisted of acquiring 120 loading cycles at low crosshead speed (strain rate ∼10 −3 s −1 ) up to 35% strain while recording the variations in the electrical resistance upon extension. The 35% strain value was chosen due to the project aim; pressure ulcer prevention where seating area deformations are expected to be <20% [11].…”

Section: Materials Analysismentioning

confidence: 99%

Photolithographic structuring of stretchable conductors and sub-kPa pressure sensors

Tuinea‐Bobe

Lemoine

Manzoor

et al. 2011

J. Micromech. Microeng.

View full text Add to dashboard Cite

This paper presents a novel method to prepare stretchable conductors and pressure sensors based on the gold/polydimethylsiloxane (PDMS) system. The gold films were sputtered onto structured PDMS surfaces produced with a photolithographic surface treatment with the aim of reducing tensile strains in the gold film. Scanning electron microscopy (SEM) and atomic force microscopy analyses showed that these 3D patterns reduce cracks and delaminations in the gold film. Electrical measurements indicate that the patterns also protect the films against repeated tensile cycling, although the un-patterned samples remained conducting as well after the completion of 120 cycles. The extrapolated resistivity value of the patterned sample (4.5 × 10 −5 cm) compares well with previously published data. SEM micrographs indicate that the pattern features deflect the cracks and therefore toughen the gold film. However, x-ray photoelectron spectroscopy and contact angle analyses indicate that the patterning process also slightly modifies the surface chemistry. This patterning method was used to prepare capacitive strain gauges with pressure sensitivity (Z/Z)/P of 0.14 kPa −1 in the sub-kPa regime. Such stretchable and potentially conformal low-pressure sensors have not been produced before and could prove advantageous for many smart fabric applications.

show abstract

Section: Materials Analysismentioning

confidence: 99%

Photolithographic structuring of stretchable conductors and sub-kPa pressure sensors

Tuinea‐Bobe

Lemoine

Manzoor

et al. 2011

J. Micromech. Microeng.

View full text Add to dashboard Cite

show abstract

“…A closed or T-shaped armrest prevents an optimal pelvic belt fit and forces the belt over or against the armrests structure, 22 allowing the lap belt to slide over the abdomen, causing internal injury during a frontal impact. 30,31 If the muscles supporting the lower or upper torso are not adequate to maintain proper body position during severe driving maneuvers, additional (lateral) supports should be used, such as a chest harness, lateral stabilizers, pelvic supports, or shoulder pads. These postural supports should be used in addition to, rather than instead of, the seatbelt system because most wheelchair-mounted belts have not been crash tested and some are even designed to break away from the wheelchair during a vehicle crash.…”

Section: Drivers Seated In Wheelchairsmentioning

confidence: 99%