A Study Into LDPE As An Undersurfacing Material For Injury Prevention and Risk Minimisation In Children's Playgrounds
- American Society of Mechanical Engineering
- Publication Type:
- Conference Proceeding
- Proceedings of IMECE 2003, 2003 ASME International Mechanical Engineering Congress & Exposition, 2003, pp. 1 - 9
- Issue Date:
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Low Density Polyethylene (LDPE) closed-cell foam is used extensively as an impact absorbing material for injury prevention and risk minimisation in a variety of applications, including children's playground undersurfacing, padding for trampoline frames, and other fall zones. This paper presents and analyses the data from numerous impact tests performed on samples of LDPE of select different product thicknesses (10, 20, 30 and 40 mm), nominal Relative Densities (30, 45, 60 and 75 kg/m3) and drops or free height of fall (100 mm steps in heights from 300 to 2100 mm). The impact absorption properties of LDPE are characterized using the Australian and New Zealand Standard AS/NZS 4422: Playground Surfacing Specifications, Requirements and Test Method. The gmax and HIC results are presented both graphically and numerically. This paper also discusses uses and limitations of LDPE with particular emphasis on injury prevention and risk minimisation.
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