{"id":1984,"date":"2025-02-21T13:31:45","date_gmt":"2025-02-21T12:31:45","guid":{"rendered":"https:\/\/sita-slovensko.com\/testovani-smacivosti-a-kontaktniho-uhlu\/"},"modified":"2025-06-05T07:12:49","modified_gmt":"2025-06-05T05:12:49","slug":"testovani-smacivosti-a-kontaktniho-uhlu","status":"publish","type":"post","link":"https:\/\/sita-slovensko.com\/cs\/testovani-smacivosti-a-kontaktniho-uhlu\/","title":{"rendered":"Testov\u00e1n\u00ed sm\u00e1\u010divosti a kontaktn\u00edho \u00fahlu"},"content":{"rendered":"\n
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Sm\u00e1\u010divost ozna\u010duje schopnost povrchu b\u00fdt sm\u00e1\u010den kapalinou. Pokud se kapalina rovnom\u011brn\u011b rozprost\u0159e, povrch je pova\u017eov\u00e1n za sm\u00e1\u010div\u00fd. Pokud kapalina povrch \u010d\u00e1ste\u010dn\u011b sm\u00e1\u010d\u00ed nebo jej v\u016fbec nesm\u00e1\u010d\u00ed a dokonce se formuje do kapek, povrch je nesm\u00e1\u010div\u00fd. <\/p>\n\n\n\n

Kl\u00ed\u010dov\u00fdmi faktory jsou fyzik\u00e1ln\u011b-chemick\u00e9 vlastnosti povrchu a kapaliny. Zde p\u016fsob\u00ed adhezn\u00ed a kohezn\u00ed s\u00edly. Kdy\u017e jsou adhezn\u00ed s\u00edly mezi kapalinou a povrchem v\u011bt\u0161\u00ed ne\u017e kohezn\u00ed s\u00edly uvnit\u0159 kapaliny, kapalina povrch sm\u00e1\u010d\u00ed. Naopak, slab\u00e1 sm\u00e1\u010divost se pozoruje, kdy\u017e v kapalin\u011b dominuj\u00ed kohezn\u00ed s\u00edly. <\/p>\n<\/div>\n<\/div>\n\n

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M\u011b\u0159en\u00ed kontaktn\u00edho \u00fahlu<\/h2>\n\n\n\n

Pro kontrolu sm\u00e1\u010divosti bylo zavedeno m\u011b\u0159en\u00ed kontaktn\u00edho \u00fahlu v r\u016fzn\u00fdch konfigurac\u00edch.<\/p>\n\n\n\n

Kontaktn\u00ed \u00fahel je m\u011b\u0159\u00edtkem sm\u00e1\u010divosti povrchu kapalinou a ud\u00e1v\u00e1 \u00fahel, p\u0159i kter\u00e9m se kapalina setk\u00e1v\u00e1 s povrchem. Kontaktn\u00ed \u00fahel se obvykle m\u011b\u0159\u00ed ve stupn\u00edch. Kontaktn\u00ed \u00fahel 0\u00b0 znamen\u00e1 \u00fapln\u00e9 sm\u00e1\u010den\u00ed, zat\u00edmco p\u0159i \u00fahlu 180\u00b0 se kapalina formuje do sf\u00e9rick\u00e9 kapky. <\/p>\n\n\n\n

V modern\u011bj\u0161\u00edch m\u011b\u0159ic\u00edch syst\u00e9mech je kapka na povrchu osv\u011btlena. Vysoce rozli\u0161uj\u00edc\u00ed kamery zaznamen\u00e1vaj\u00ed obrazy kapky na povrchu. Tyto obrazy jsou n\u00e1sledn\u011b analyzov\u00e1ny pro v\u00fdpo\u010det kontaktn\u00edho \u00fahlu. Software m\u016f\u017ee automaticky extrahovat \u00fahel sledov\u00e1n\u00edm tvaru kapky. <\/p>\n<\/div>\n\n\n\n

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P\u0159enosn\u00e9 za\u0159\u00edzen\u00ed pro m\u011b\u0159en\u00ed kontaktn\u00edho \u00fahlu SITA SurfaSpector automaticky umis\u0165uje kapku vody na povrch pomoc\u00ed d\u00e1vkovac\u00ed jednotky. Kapka je osv\u011btlena z boku, \u010d\u00edm\u017e vrh\u00e1 st\u00edn na \u0161ikmou m\u011b\u0159ic\u00ed plochu. Obr\u00e1zek zaznamenan\u00fd vysoce rozli\u0161uj\u00edc\u00ed kamerou je perspektivn\u011b upraven a pot\u00e9 je z kontury kapky vypo\u010d\u00edt\u00e1n kontaktn\u00ed \u00fahel. D\u00edky nep\u0159\u00edm\u00e9mu sn\u00edm\u00e1n\u00ed je metoda nez\u00e1visl\u00e1 na reflexn\u00edch vlastnostech povrchu. Z\u00e1kladn\u00ed linie pro v\u00fdpo\u010det kontaktn\u00edho \u00fahlu je p\u0159eddefinovan\u00e1 a nemus\u00ed b\u00fdt n\u00e1sledn\u011b manu\u00e1ln\u011b kontrolov\u00e1na. <\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Sm\u00e1\u010divost popisuje schopnost povrchu b\u00fdt sm\u00e1\u010den kapalinou. Kontaktn\u00ed \u00fahel je m\u011b\u0159enou veli\u010dinou t\u00e9to sm\u00e1\u010divosti a ud\u00e1v\u00e1 \u00fahel vytvo\u0159en\u00fd mezi povrchem a kapalinou. <\/p>\n","protected":false},"author":1,"featured_media":1714,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[34],"tags":[],"class_list":["post-1984","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-informace"],"acf":[],"_links":{"self":[{"href":"https:\/\/sita-slovensko.com\/cs\/wp-json\/wp\/v2\/posts\/1984","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sita-slovensko.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sita-slovensko.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sita-slovensko.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sita-slovensko.com\/cs\/wp-json\/wp\/v2\/comments?post=1984"}],"version-history":[{"count":0,"href":"https:\/\/sita-slovensko.com\/cs\/wp-json\/wp\/v2\/posts\/1984\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sita-slovensko.com\/cs\/wp-json\/wp\/v2\/media\/1714"}],"wp:attachment":[{"href":"https:\/\/sita-slovensko.com\/cs\/wp-json\/wp\/v2\/media?parent=1984"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sita-slovensko.com\/cs\/wp-json\/wp\/v2\/categories?post=1984"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sita-slovensko.com\/cs\/wp-json\/wp\/v2\/tags?post=1984"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}