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The Effect of Repetitive Compression with Constant Stress on the Compressive Properties of Foams  

Park, Cha-Cheol (Faculty of Applied Engineering, Dongseo University)
Publication Information
Elastomers and Composites / v.40, no.4, 2005 , pp. 258-265 More about this Journal
Abstract
To study the compressive stress, recovery force and permanent strain of foams for footwear midsole, polyurethane(PU), phylon(PH) and injection phylon(IP) foams were repetitively compressed with constant compressive stress. Maximum compressive stress of PU did not decrease with repetitive compression on the constant compressive stress, but that of IP largely decreased. Engineering strain of foams were formed by repetitively compressing the three types of foam. The engineering strain of PU was smaller than that of IP and PH. Compressive stress and recovery force of IP and PH at certain strain were decreased with repetitive compression, but that of PU was not noticeably changed.
Keywords
foam; compression; strain; midsole; footwear;
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