Citation

Jachowicz M, Owczarek G. Int. J. Occup. Safety Ergonomics 2019; ePub(ePub): ePub.

Affiliation

Department of Personal Protective Equipment, Central Institute for Labour Protection - National Research Institute , Łódź , Poland.

Copyright

(Copyright © 2019, Centralny Instytut Ochrony Pracy - Państwowy Instytut Badawczy, Publisher Informa - Taylor and Francis Group)

DOI

10.1080/10803548.2019.1667112

PMID

31603048

Abstract

The paper presents the results of the measurements of mechanical parameters for foamed materials with non-Newtonian liquid characteristics (energy suppressed in the sample, the force transferred to the anvil during the dynamic tests). In dynamic studies, the following characteristics were determined: the pressure forces exerted on the anvil as a function of the sample deflection during the impact, the energy suppressed in the sample depending on the temperature and the energy suppressed in the sample depending on the sample density. Foamed materials with non-Newtonian characteristics are currently used as elements protecting against impacts. Such materials have been used for the first time in protective helmets, and in particular in those designed for workplace applications.

Language: en

Keywords

foamed materials with non–Newtonian liquid characteristics; head protection; protective helmets