Reducing playground injuries by increasing HIC sampling rate from 8 kHz to 20 kHz

Field	Value	Language
dc.contributor.author	Eager, D https://orcid.org/0000-0003-1926-7867	en_US
dc.contributor.author	Chapman, C	en_US
dc.contributor.author	White, E	en_US
dc.date.issued	2017-06-20	en_US
dc.identifier.citation	2017	en_US
dc.identifier.uri	http://hdl.handle.net/10453/106211
dc.description.abstract	Impact attenuating surface (IAS) materials are used in children's playgrounds to limit the potential impact hazard presented to a child when falling from playground equipment; the largest hazard being head impact injuries. The head injury criterion (HIC) is used to measure the IAS around the world. Australia adopted a sampling rate of 8 kHz for playground IAS testing in 1996 from automotive industry testing for measurement of the HIC. Data acquisition has improved since 1996 and it is important that the performance of the IAS is measured accurately. An investigation into the effects of sampling rate on the HIC value was undertaken. A variety of IAS samples were impact tested at sampling rates ranging from 8 kHz to 80 kHz using a calibrated hemispherical headform fitted with a tri-axial accelerometer. The results of this testing will be presented. The testing confirmed that a sampling rate of 8 kHz under reported the HIC particularly at the critical fall height of IAS. Australia adopted a sampling rate of 20 kHz on the 23 November 2016 when they published AS 4422:2016.	en_US
dc.title	Reducing playground injuries by increasing HIC sampling rate from 8 kHz to 20 kHz	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/e-Press
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access

Abstract:

Impact attenuating surface (IAS) materials are used in children's playgrounds to limit the potential impact hazard presented to a child when falling from playground equipment; the largest hazard being head impact injuries. The head injury criterion (HIC) is used to measure the IAS around the world. Australia adopted a sampling rate of 8 kHz for playground IAS testing in 1996 from automotive industry testing for measurement of the HIC. Data acquisition has improved since 1996 and it is important that the performance of the IAS is measured accurately. An investigation into the effects of sampling rate on the HIC value was undertaken. A variety of IAS samples were impact tested at sampling rates ranging from 8 kHz to 80 kHz using a calibrated hemispherical headform fitted with a tri-axial accelerometer. The results of this testing will be presented. The testing confirmed that a sampling rate of 8 kHz under reported the HIC particularly at the critical fall height of IAS. Australia adopted a sampling rate of 20 kHz on the 23 November 2016 when they published AS 4422:2016.

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http://hdl.handle.net/10453/106211