{"id":40273,"date":"2020-01-06T12:48:10","date_gmt":"2020-01-06T12:48:10","guid":{"rendered":"http:\/\/www.labri.fr\/perso\/barla\/blog\/?p=40273"},"modified":"2020-01-06T12:48:11","modified_gmt":"2020-01-06T12:48:11","slug":"probing-mechanical-properties","status":"publish","type":"post","link":"https:\/\/www.labri.fr\/perso\/barla\/blog\/?p=40273","title":{"rendered":"Probing mechanical properties"},"content":{"rendered":"<p id=\"top\" \/>\n<p>The rigidity, softness, viscosity, elasticity, plasticity of different materials seem to be mediated by their inertial behavior through visual or haptic motion.<\/p>\n\n\n\n<p>In <em>visual <\/em>motion, different trajectories of surface points that should be in sync if the object were rigid show relative inertia in their movement. Spatio-temporal patterns (not instantaneous) are able to convey different properties: temporal offsets, oscillations and damping are important. <\/p>\n\n\n\n<p><strong>How is a rigid motion actually perceived in 3D and not mistaken with another type of spatio-temporal pattern (say elastic)?<\/strong><\/p>\n\n\n\n<p>In <em>haptic <\/em>motion, there seems to be an effect of the inertia of position (resistance) of a finger &#8212; or any other body part &#8212; with its progressive deformation as pressure is increased for soft materials. The softness of the body part itself plays a role: the tip of a finger or a knuckle are somehow expected to react differently&#8230;<\/p>\n\n\n\n<p><strong>How are elastic or plastic objects distinguished: before or after pressure is released? How are touching and picking different?<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The rigidity, softness, viscosity, elasticity, plasticity of different materials seem to be mediated by their inertial behavior through visual or haptic motion. In visual motion, different trajectories of surface points that should be in sync if the object were rigid show relative inertia in their movement. Spatio-temporal patterns (not instantaneous) are able to convey different &#8230; <a title=\"Probing mechanical properties\" class=\"read-more\" href=\"https:\/\/www.labri.fr\/perso\/barla\/blog\/?p=40273\" aria-label=\"Read more about Probing mechanical properties\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[651],"tags":[],"class_list":["post-40273","post","type-post","status-publish","format-standard","hentry","category-thoughts"],"_links":{"self":[{"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/posts\/40273","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=40273"}],"version-history":[{"count":1,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/posts\/40273\/revisions"}],"predecessor-version":[{"id":40274,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/posts\/40273\/revisions\/40274"}],"wp:attachment":[{"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=40273"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=40273"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=40273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}