{"id":615,"date":"2026-02-26T05:51:39","date_gmt":"2026-02-26T05:51:39","guid":{"rendered":"https:\/\/www.teartester.com\/?post_type=method&#038;p=615"},"modified":"2026-02-27T08:49:03","modified_gmt":"2026-02-27T08:49:03","slug":"elmendorf-tearing-test","status":"publish","type":"method","link":"https:\/\/www.teartester.com\/cs\/method\/elmendorf-tearing-test\/","title":{"rendered":"Elmendorf\u016fv trhac\u00ed test"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Standardy pro testov\u00e1n\u00ed pap\u00edru, tkanin a plast\u016f<\/h2>\n\n\n\n<p>Elmendorfova zkou\u0161ka trh\u00e1n\u00ed je vhodn\u00e1 pro \u0161irokou \u0161k\u00e1lu materi\u00e1l\u016f a aplikac\u00ed a jej\u00ed v\u00fdznam se odr\u00e1\u017e\u00ed v mno\u017estv\u00ed norem, kter\u00e9 na tuto metodu odkazuj\u00ed.<\/p>\n\n\n\n<p>Pro <strong>pevnost pap\u00edru p\u0159i trh\u00e1n\u00ed<\/strong>, normy jako nap\u0159. <strong>ASTM D1424<\/strong>, <strong>ISO 1974<\/strong>, a <strong>TAPPI T414<\/strong> definovat postupy pro m\u011b\u0159en\u00ed s\u00edly pot\u0159ebn\u00e9 k \u0161\u00ed\u0159en\u00ed trhliny v pap\u00edru a lepence. Tyto normy jsou i nad\u00e1le z\u00e1sadn\u00ed pro v\u00fdrobce obal\u016f, tiskovin a speci\u00e1ln\u00edho pap\u00edru.<\/p>\n\n\n\n<p>Na adrese <strong>pevnost tkaniny v roztr\u017een\u00ed<\/strong> testov\u00e1n\u00ed, <strong>ISO 13937-3<\/strong> a <strong>ISO 6383-2<\/strong> popsat p\u0159\u00edstupy zalo\u017een\u00e9 na Elmendorfov\u011b metod\u011b pro tkan\u00e9 a netkan\u00e9 textilie. Tyto metody pom\u00e1haj\u00ed hodnotit trvanlivost od\u011bv\u016f, technick\u00fdch textili\u00ed a pr\u016fmyslov\u00fdch tkanin.<\/p>\n\n\n\n<p>Pro <strong>pevnost plastov\u00e9 f\u00f3lie v roztr\u017een\u00ed<\/strong>, <strong>ASTM D1922<\/strong> a <strong>ASTM D689<\/strong> pou\u017e\u00edt princip Elmendorfovy zkou\u0161ky na roztr\u017een\u00ed pro pru\u017en\u00e9 plastov\u00e9 materi\u00e1ly, v\u010detn\u011b polyethylenu, polypropylenu a v\u00edcevrstv\u00fdch f\u00f3li\u00ed. <strong>ASTM D751<\/strong> d\u00e1le roz\u0161i\u0159uje hodnocen\u00ed trh\u00e1n\u00ed na potahovan\u00e9 textilie a pr\u016fmyslov\u00e9 lamin\u00e1ty.<\/p>\n\n\n\n<p>Tyto normy spole\u010dn\u011b ukazuj\u00ed, jak se Elmendorfova zkou\u0161ka trh\u00e1n\u00ed p\u0159izp\u016fsobuje r\u016fzn\u00fdm materi\u00e1lov\u00fdm struktur\u00e1m p\u0159i zachov\u00e1n\u00ed konzistentn\u00ed filozofie zkou\u0161en\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Princip testu a p\u0159ehled za\u0159\u00edzen\u00ed<\/h2>\n\n\n\n<p>J\u00e1drem Elmendorfova testu trh\u00e1n\u00ed je <strong>kyvadlov\u00fd n\u00e1razov\u00fd syst\u00e9m<\/strong>. Vzorek, p\u0159edem vy\u0159\u00edznut\u00fd malou \u0161t\u011brbinou, se bezpe\u010dn\u011b upevn\u00ed do svorek. Kdy\u017e se kyvadlo uvoln\u00ed, \u0161\u00ed\u0159\u00ed se trhlina po cel\u00e9 \u0161\u00ed\u0159ce vzorku jedin\u00fdm pohybem.<\/p>\n\n\n\n<p>Kl\u00ed\u010dov\u00e9 prvky testovac\u00ed sestavy zahrnuj\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kalibrovan\u00e9 kyvadlo s voliteln\u00fdm rozsahem energie<\/li>\n\n\n\n<li>P\u0159esn\u00e9 svorky na vzorky zabra\u0148uj\u00edc\u00ed vyklouznut\u00ed<\/li>\n\n\n\n<li>Normalizovan\u00e9 rozm\u011bry vzorku na z\u00e1klad\u011b platn\u00e9 normy<\/li>\n\n\n\n<li>P\u0159ehledn\u00e1 stupnice nebo digit\u00e1ln\u00ed syst\u00e9m pro ode\u010det s\u00edly nebo energie p\u0159i trh\u00e1n\u00ed<\/li>\n<\/ul>\n\n\n\n<p>Modern\u00ed n\u00e1stroje, jako je nap\u0159. <strong>Cell Instruments Tester na trh\u00e1n\u00ed SLD-01<\/strong> kombinuj\u00ed mechanickou spolehlivost s digit\u00e1ln\u00edm m\u011b\u0159en\u00edm, zlep\u0161uj\u00ed opakovatelnost a podporuj\u00ed \u0159adu mezin\u00e1rodn\u00edch norem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Princip testu a p\u0159ehled za\u0159\u00edzen\u00ed<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.teartester.com\/wp-content\/uploads\/2026\/02\/Elmendorf-Tearing-Test-Solution-for-Paper-Fabric-and-Film.webp\" alt=\"Elmendorf\u016fv testovac\u00ed roztok na trh\u00e1n\u00ed pap\u00edru, l\u00e1tky a filmu\" class=\"wp-image-622\" srcset=\"https:\/\/www.teartester.com\/wp-content\/uploads\/2026\/02\/Elmendorf-Tearing-Test-Solution-for-Paper-Fabric-and-Film.webp 800w, https:\/\/www.teartester.com\/wp-content\/uploads\/2026\/02\/Elmendorf-Tearing-Test-Solution-for-Paper-Fabric-and-Film-300x300.webp 300w, https:\/\/www.teartester.com\/wp-content\/uploads\/2026\/02\/Elmendorf-Tearing-Test-Solution-for-Paper-Fabric-and-Film-150x150.webp 150w, https:\/\/www.teartester.com\/wp-content\/uploads\/2026\/02\/Elmendorf-Tearing-Test-Solution-for-Paper-Fabric-and-Film-768x768.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>J\u00e1drem Elmendorfova testu trh\u00e1n\u00ed je <strong>kyvadlov\u00fd n\u00e1razov\u00fd syst\u00e9m<\/strong>. Vzorek, p\u0159edem vy\u0159\u00edznut\u00fd malou \u0161t\u011brbinou, se bezpe\u010dn\u011b upevn\u00ed do svorek. Kdy\u017e se kyvadlo uvoln\u00ed, \u0161\u00ed\u0159\u00ed se trhlina po cel\u00e9 \u0161\u00ed\u0159ce vzorku jedin\u00fdm pohybem.<\/p>\n\n\n\n<p>Kl\u00ed\u010dov\u00e9 prvky testovac\u00ed sestavy zahrnuj\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kalibrovan\u00e9 kyvadlo s voliteln\u00fdm rozsahem energie<\/li>\n\n\n\n<li>P\u0159esn\u00e9 svorky na vzorky zabra\u0148uj\u00edc\u00ed vyklouznut\u00ed<\/li>\n\n\n\n<li>Normalizovan\u00e9 rozm\u011bry vzorku na z\u00e1klad\u011b platn\u00e9 normy<\/li>\n\n\n\n<li>P\u0159ehledn\u00e1 stupnice nebo digit\u00e1ln\u00ed syst\u00e9m pro ode\u010det s\u00edly nebo energie p\u0159i trh\u00e1n\u00ed<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n<p>Modern\u00ed n\u00e1stroje, jako je nap\u0159. <strong>Cell Instruments <a href=\"https:\/\/www.teartester.com\/cs\/\">Tester slz SLD-01<\/a><\/strong> kombinuj\u00ed mechanickou spolehlivost s digit\u00e1ln\u00edm m\u011b\u0159en\u00edm, \u010d\u00edm\u017e zlep\u0161uj\u00ed opakovatelnost a podporuj\u00ed v\u00edce mezin\u00e1rodn\u00edch m\u011b\u0159en\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Typick\u00fd zku\u0161ebn\u00ed postup<\/h2>\n\n\n\n<p>A\u010dkoli se podrobnosti v jednotliv\u00fdch zem\u00edch m\u00edrn\u011b li\u0161\u00ed <a href=\"https:\/\/store.astm.org\/\" rel=\"nofollow noopener\" target=\"_blank\">ASTM<\/a>, <a href=\"https:\/\/www.iso.org\/home.html\" rel=\"nofollow noopener\" target=\"_blank\">ISO<\/a>, a <a href=\"https:\/\/www.tappi.org\/\" rel=\"nofollow noopener\" target=\"_blank\">TAPPI<\/a> normy, m\u00e1 obecn\u00fd postup Elmendorfovy zkou\u0161ky na roztr\u017een\u00ed jednotnou strukturu:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>P\u0159ipravte vzorky podle zvolen\u00e9 normy a zajist\u011bte p\u0159esn\u00e9 rozm\u011bry a p\u0159edv\u00fd\u0159ezy.<\/li>\n\n\n\n<li>Vzorky uchov\u00e1vejte p\u0159i kontrolovan\u00e9 teplot\u011b a vlhkosti, aby se sn\u00ed\u017eil vliv prost\u0159ed\u00ed.<\/li>\n\n\n\n<li>Vzorek pe\u010dliv\u011b upevn\u011bte a vyrovnejte tak, abyste zajistili p\u0159\u00edmou dr\u00e1hu trh\u00e1n\u00ed.<\/li>\n\n\n\n<li>Uvoln\u011bte kyvadlo, aby se roztr\u017een\u00ed \u0161\u00ed\u0159ilo v jednom souvisl\u00e9m pohybu.<\/li>\n\n\n\n<li>Zaznamenejte s\u00edlu nebo energii trh\u00e1n\u00ed a vypo\u010d\u00edtejte pr\u016fm\u011brn\u00e9 hodnoty z v\u00edce vzork\u016f.<\/li>\n<\/ol>\n\n\n\n<p>Tento jednoduch\u00fd proces umo\u017e\u0148uje laborato\u0159\u00edm efektivn\u011b prov\u00e1d\u011bt rutinn\u00ed testov\u00e1n\u00ed bez ztr\u00e1ty p\u0159esnosti.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Jak prov\u00e9st Elmendortovu zkou\u0161ku trh\u00e1n\u00ed na vzorku plastov\u00e9 f\u00f3lie\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/oo5j21g_thM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":true},"class_list":["post-615","method","type-method","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.teartester.com\/cs\/wp-json\/wp\/v2\/method\/615","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.teartester.com\/cs\/wp-json\/wp\/v2\/method"}],"about":[{"href":"https:\/\/www.teartester.com\/cs\/wp-json\/wp\/v2\/types\/method"}],"wp:attachment":[{"href":"https:\/\/www.teartester.com\/cs\/wp-json\/wp\/v2\/media?parent=615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}