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Development and Validation of a Toddler Manikin for Assessing Belt Fit in Aviation Seat

dc.contributor.authorReed Matthew P.en_US
dc.contributor.authorEbert, Sheila M.en_US
dc.contributor.authorBoyle, Kyle J.en_US
dc.date.accessioned2018-02-02T17:02:43Z
dc.date.availableNO_RESTRICTIONen_US
dc.date.available2018-02-02T17:02:43Z
dc.date.issued2017-12
dc.identifierUMTRI-2017-7en_US
dc.identifier.otherTechnical Reporten_US
dc.identifier.urihttps://hdl.handle.net/2027.42/140985
dc.description.abstractNo standardized procedure or tool currently exists for measuring belt fit for children in aviation seats. A belt fit test manikin representing a typical two-year-old child in the U.S. was developed to address the smallest passengers for whom the lap belt is intended to be functional. The manikin external contours were based on the output of a statistical analysis of child body shape and constructed from ABS using additive manufacturing techniques. A metal linkage was constructed that provides appropriate mass and mobility in the neck and hips. A validation study was conducted using thirty-eight child volunteers. Lap belt fit was measured in adult- and child selected postures and at three lap belt angles. Additional measurements were obtained with the child wearing a CARES harness, the only add-on harness currently approved for use in aviation seats. Extensive anthropometric data were obtained from the participants, including three-dimensional whole-body surface scans. Statistical analysis revealed significant effects of lap belt angle on the placement of the lap belt with respect to the pelvis, but differences between adult- and child-selected postures were not significant due to large variability. For most children and conditions, the lap belt overlaid the pelvis. Body size was only weakly related to lap belt fit, with larger children experiencing lap belt fit that was lower and further rearward (closer to the pelvis). However, only about 10% of the variation in lap belt positioning was attributable to child body size. The manikin belt fit measures were directionally consistent with the effects of lap belt angle on child belt fit. On average, the manikin belt fit was closer to the pelvis (lower and more rearward) than was the case for children. Using the demonstrated relationship between manikin and child belt fit, the manikin and associated procedure can be used to assess belt fit in aviation seats.en_US
dc.description.sponsorshipFederal Aviation Administratioinen_US
dc.languageEnglishen_US
dc.publisherUniversity of Michigan, Ann Arbor, Transportation Research Instituteen_US
dc.titleDevelopment and Validation of a Toddler Manikin for Assessing Belt Fit in Aviation Seaten_US
dc.typeTechnical Reporten_US
dc.subject.hlbsecondlevelTransportation
dc.subject.hlbtoplevelEngineering
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/140985/1/UMTRI-2017-7 (1).pdf
dc.owningcollnameTransportation Research Institute (UMTRI)


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