div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: SKM C658200721122401988 Rys and Konz 1990 have used the material compression as an objective measure However with the use of viscoelastic materials for surfaces other material src=https:reader034vdocumentsusreader034viewer20220505115f9c00738dbed44be825eb23html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: SKM C658200721122401988 Rys and Konz 1990 have used the material compression as an objective measure However with the use of viscoelastic materials for surfaces other material src=https:reader034vdocumentsusreader034viewer20220505115f9c00738dbed44be825eb23html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: SKM C658200721122401988 Rys and Konz 1990 have used the material compression as an objective measure However with the use of viscoelastic materials for surfaces other material src=https:reader034vdocumentsusreader034viewer20220505115f9c00738dbed44be825eb23html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: SKM C658200721122401988 Rys and Konz 1990 have used the material compression as an objective measure However with the use of viscoelastic materials for surfaces other material src=https:reader034vdocumentsusreader034viewer20220505115f9c00738dbed44be825eb23html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 5button div class=ts-image amp-img class=ts-thumb alt=Page 5: SKM C658200721122401988 Rys and Konz 1990 have used the material compression as an objective measure However with the use of viscoelastic materials for surfaces other material src=https:reader034vdocumentsusreader034viewer20220505115f9c00738dbed44be825eb23html5thumbnails5jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 6button div class=ts-image amp-img class=ts-thumb alt=Page 6: SKM C658200721122401988 Rys and Konz 1990 have used the material compression as an objective measure However with the use of viscoelastic materials for surfaces other material src=https:reader034vdocumentsusreader034viewer20220505115f9c00738dbed44be825eb23html5thumbnails6jpg width=142 height=106 layout=responsive amp-img divdiv