Evaluation of titanium ultralight manual wheelchairs using ANSI/RESNA standards
Evaluation of titanium ultralight manual wheelchairs using ANSI/RESNA standards
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DOI：
10.1682/jrrd.2007.12.0204
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发表时间：
2008-01-01
影响因子：
--
通讯作者：
Connor, Samuel
中科院分区：
文献类型：
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作者：
Liu, Hsin-Yi;Cooper, Rory A.;Connor, Samuel
舒适的推进和支撑、重量轻和尺寸小是帮助保持手动轮椅使用者的倾翻-肢体完整性和改善可达性的重要特征。钛合金轮椅就是为响应这些目标而开发的产品，但在进行本研究之前，钛合金轮椅的测试结果尚未公开。我们假设这些钛轮椅符合美国国家标准协会（ANSI）/北美康复工程和辅助技术协会（RESNA）的标准。我们使用ANSI/RESNA测试程序测试了12辆超轻钛合金刚架轮椅（4种型号），并将测试结果与先前测试的超轻和轻型铝合金轮椅进行了比较。所有轮椅都通过了向前制动有效性测试，但在向后制动有效性测试中，有8辆轮椅在倾斜到7度之前向后倾斜。所有轮椅都通过了冲击强度测试，但六辆轮椅在静态强度测试中失败。三辆轮椅成功完成了疲劳测试，但其余轮椅过早失败。这组钛合金轮椅的等效循环次数和值低于先前研究中测试的超轻铝合金轮椅。故障模式揭示了每个模型的重要设计问题。我们的研究结果表明，制造商可能需要在新产品商业化之前进行更仔细的分析。
Comfortable propulsion and support, light weight, and small dimensions are important features that help preserve tipper-limb integrity of manual wheelchair users and improve accessibility. The titanium wheelchair is a product developed in response to these goals, but none of the test results of titanium wheelchairs had been disclosed before this study was performed. We hypothesized that these titanium wheelchairs would be in compliance with American National Standards Institute (ANSI)/Rehabilitation Engineering and Assistive Technology Society of North America (RESNA) standards. We tested 12 ultralight titanium rigid-frame wheelchairs (4 models) using ANSI/RESNA testing procedures and compared the test results with previously tested ultralight and lightweight aluminum wheelchairs. All wheelchairs passed the forward braking effectiveness test, but eight wheelchairs tipped backward before inclining to 7 degrees in the rearward braking effectiveness test. All wheelchairs passed the impact strength tests, but six wheelchairs failed in the static strength tests. Three wheelchairs Successfully completed the fatigue tests, but the remaining wheelchairs failed prematurely. This group of titanium wheelchairs had less equivalent cycles and value than the Ultralight aluminum wheelchairs that were tested in a previous study. The failure modes revealed important design issues of each model. Our results suggest that manufacturers may need to perform more careful analyses before commercializing new products.