eprintid: 8182
rev_number: 5
userid: 6
dir: disk0/00/00/81/82
datestamp: 2011-11-10 19:48:31
lastmod: 2016-11-15 13:45:01
status_changed: 2011-11-10 19:48:31
type: thesis_degree
metadata_visibility: show
contact_email: hsl16@pitt.edu, hsinyipt86@gmail.com
item_issues_id: similar_title_15645
item_issues_id: similar_title_15820
item_issues_type: similar_title
item_issues_type: similar_title
item_issues_description: Similar title to
Liu, HY and Cooper, RA and Pearlman, J and Cooper, R and Connor, S
(2008)
Evaluation of titanium ultralight manual wheelchairs using ANSI/RESNA standards.
Journal of Rehabilitation Research and Development, 45 (9).
1251 - 1268.
ISSN 0748-7711
item_issues_description: Similar title to Liu, Hsin-yi and Cooper, Rory A and Pearlman, Jonathan Lee and Cooper, Rosemarie and Connor, Samuel (2008) Evaluation of titanium ultralight manual wheelchairs using ANSI/ RESNA standards. Journal of rehabilitation research and development, 45 (9). pp. 1251-67. ISSN 1938-1352
item_issues_timestamp: 2012-10-06 06:07:19
item_issues_timestamp: 2012-10-11 06:07:36
item_issues_status: discovered
item_issues_status: autoresolved
item_issues_count: 1
eprint_status: archive
creators_name: Liu, Hsin Yi
creators_email: hsl16@pitt.edu, hsinyipt86@gmail.com
creators_id: HSL16
title: EVALUATION OF TITANIUM ULTRALIGHT MANUAL WHEELCHAIRS USING ANSI/RESNA STANDARDS
ispublished: unpub
divisions: sch_hrs_healthandrehabsciences
full_text_status: public
keywords: durability; failure; fatigue tests; reference standards; wheelchair
abstract: A series of commercially available titanium ultralight wheelchairs were tested using ANSI/RESNA testing procedures, and their durability was compared with previously tested aluminum ultralight wheelchairs and light-weight wheelchairs. Three of each of the following titanium wheelchairs were tested: Invacare-TopEnd, Invacare-A4, Quickie-Ti, and TiLite-ZRA. The Quickie-Ti wheelchairs had the most forward and rearward center of gravity adjustability. All of the titanium wheelchairs passed the forward braking effectiveness test, but two chairs of each model tipped backward before the platform inclining to 7 degree in the rearward braking effectiveness test. All titanium wheelchairs passed the impact strength tests, but two failed in the static strength tests: two Invacare-TopEnd wheelchairs and one Invacare-A4 wheelchair failed due to deformation of the armrest mounting plates, and the handgrips of the TiLite-ZRA wheelchairs slid off the push handles. Two Invacare-A4 and one Invacare-TopEnd successfully completed the double drum and curb drop tests, but the remaining 9 wheelchairs failed prematurely. No significant differences were found in the number of the equivalent cycles or the value among the four models. The titanium ultralight wheelchairs had less equivalent cycles and value than the aluminum ultralight wheelchairs that were tested in a previous study. The failure modes in the static strength tests and the fatigue tests were consistent within the model, and revealed important design issues for each model. Our results suggest that manufacturers need to perform more careful analyses before commercializing new products.
date: 2008-09-08
date_type: completed
institution: University of Pittsburgh
refereed: TRUE
etdcommittee_type: committee_chair
etdcommittee_type: committee_member
etdcommittee_type: committee_member
etdcommittee_name: Cooper, Rory A.
etdcommittee_name: Pearlman, Jon
etdcommittee_name: Cooper, Rosemarie
etdcommittee_email: rcooper@pitt.edu
etdcommittee_email: jlp46@pitt.edu
etdcommittee_email: cooperrm@pitt.edu
etdcommittee_id: RCOOPER
etdcommittee_id: JLP46
etdcommittee_id: COOPERRM
etd_defense_date: 2008-03-20
etd_approval_date: 2008-09-08
etd_submission_date: 2008-06-24
etd_access_restriction: 5_year
etd_patent_pending: FALSE
assigned_doi: doi:10.5195/pitt.etd.2011.8182
thesis_type: thesis
degree: MS
committee: Rory A. Cooper (rcooper@pitt.edu) - Committee Chair
committee: Jon Pearlman (jlp46@pitt.edu) - Committee Member
committee: Rosemarie Cooper (cooperrm@pitt.edu) - Committee Member
etdurn: etd-06242008-115100
other_id: http://etd.library.pitt.edu/ETD/available/etd-06242008-115100/
other_id: etd-06242008-115100
citation: Liu, Hsin Yi (2008) EVALUATION OF TITANIUM ULTRALIGHT MANUAL WHEELCHAIRS USING ANSI/RESNA STANDARDS. Master's Thesis, University of Pittsburgh. (Unpublished)
document_url: http://d-scholarship-dev.library.pitt.edu/8182/1/Thesis_Hsinyi_Liu_EVALUATION_OF_TITANIUM_ULTRALIGHT_MANUAL_WHEELCHAIRS_USING_ANSIRESNA_STANDARDS.pdf