Abstract
Most running shoe midsoles are made of ethylene vinyl acetate (EVA) foam although excellent mechanical long-term properties of polyurethane (PU) foam are generally known. The aim of this study was to investigate whether PU foam is applicable as midsole material regarding damping properties. Short-term and long-term mechanical tests were conducted for running shoes with midsoles of either PU or EVA foam using the Hydraulic Impact Test. The results of the short-term testing show that PU midsoles can be adjusted to a wide range of damping properties while EVA midsoles attained good average values. In long-term testing, however, the EVA foams exhibited higher relative changes of damping parameters than the PU materials, which confirms the durability and ageing resistance of PU.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
