{"id":9863,"date":"2026-02-24T15:11:46","date_gmt":"2026-02-24T07:11:46","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/astm-d1004\/"},"modified":"2026-04-16T09:53:04","modified_gmt":"2026-04-16T01:53:04","slug":"astm-d1004","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/sk\/standard\/astm-d1004\/","title":{"rendered":"ASTM D1004"},"content":{"rendered":"<h2 class=\"wp-block-heading\">ASTM D1004 a Gravesov test odolnosti proti roztrhnutiu a pretrhnutiu<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Gravesova slza - \u010do meria<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong data-start=\"1299\" data-end=\"1314\">Hrobov\u00e1 slza<\/strong> test vyhodnocuje silu potrebn\u00fa na <strong data-start=\"1352\" data-end=\"1372\">iniciova\u0165 trhanie<\/strong> vo vzorke so z\u00e1rezom. Na rozdiel od in\u00fdch met\u00f3d merania \u0161\u00edrenia trhl\u00edn sa t\u00e1to met\u00f3da zameriava na <em data-start=\"1475\" data-end=\"1504\">moment, kedy sa za\u010d\u00edna trhanie<\/em>, \u010do umo\u017e\u0148uje nahliadnu\u0165 do reakcie na koncentr\u00e1ciu nap\u00e4tia a h\u00fa\u017eevnatos\u0165 materi\u00e1lu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sk\u00fa\u0161ka odolnosti proti roztrhnutiu plastovej f\u00f3lie a listu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong data-start=\"1642\" data-end=\"1666\">sk\u00fa\u0161ka odolnosti proti roztrhnutiu<\/strong> pod\u013ea normy ASTM D1004 pou\u017e\u00edva presne definovan\u00fa geometriu vzorky, n\u00edzku mieru za\u0165a\u017eenia <em data-start=\"1750\" data-end=\"1761\">51 mm\/min<\/em>, a separa\u010dn\u00fd stroj s kon\u0161tantnou r\u00fdchlos\u0165ou uchopenia. T\u00e1to konfigur\u00e1cia zabezpe\u010duje, \u017ee test odr\u00e1\u017ea skuto\u010dn\u00e9 spr\u00e1vanie materi\u00e1lu bez maskovania nedostatkov sp\u00f4soben\u00fdch zmenami hr\u00fabky alebo lok\u00e1lnymi defektmi.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pre\u010do je d\u00f4le\u017eit\u00e1 odolnos\u0165 plastov\u00fdch f\u00f3li\u00ed a plechov proti roztrhnutiu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong data-start=\"2024\" data-end=\"2069\">odolnos\u0165 plastovej f\u00f3lie a listu proti roztrhnutiu<\/strong> ovplyv\u0148uje k\u013e\u00fa\u010dov\u00e9 faktory v\u00fdkonnosti:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Odolnos\u0165 obalu pri manipul\u00e1cii<\/li>\n\n\n\n<li>Odolnos\u0165 vo\u010di poruch\u00e1m sp\u00f4soben\u00fdm prepichnut\u00edm<\/li>\n\n\n\n<li>Zachovanie tesnenia pri mechanickom za\u0165a\u017een\u00ed<\/li>\n\n\n\n<li>Vhodnos\u0165 pre lek\u00e1rske, farmaceutick\u00e9, potravin\u00e1rske alebo priemyseln\u00e9 aplik\u00e1cie<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ke\u010f\u017ee pevnos\u0165 v roztrhnut\u00ed z\u00e1vis\u00ed od zlo\u017eenia polym\u00e9ru, orient\u00e1cie a podmienok spracovania, norma ASTM D1004 pon\u00faka \u0161tandardizovan\u00fd a spo\u013eahliv\u00fd sp\u00f4sob porovn\u00e1vania materi\u00e1lov s podobn\u00fdm rozsahom hr\u00fabky.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">K\u013e\u00fa\u010dov\u00e9 princ\u00edpy a sk\u00fa\u0161obn\u00e9 podmienky normy ASTM D1004<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Riaden\u00e9 za\u0165a\u017eenie a geometria vzorky<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Norma ASTM D1004 vy\u017eaduje tvar vzorky, ktor\u00fd vytv\u00e1ra <strong data-start=\"2678\" data-end=\"2702\">koncentr\u00e1cia nap\u00e4tia<\/strong> v bl\u00edzkosti z\u00e1rezu. To umo\u017e\u0148uje, aby k roztrhnutiu do\u0161lo v definovanej oblasti, \u010do umo\u017e\u0148uje opakovate\u013en\u00e9 v\u00fdsledky aj v pr\u00edpade pru\u017en\u00fdch f\u00f3li\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Maxim\u00e1lne za\u0165a\u017eenie ako hodnota odolnosti proti roztrhnutiu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <em data-start=\"2875\" data-end=\"2918\">maxim\u00e1lna sila pozorovan\u00e1 pri inici\u00e1cii trhliny<\/em> predstavuje odolnos\u0165 materi\u00e1lu proti roztrhnutiu. D\u00f4le\u017eit\u00e9 je, \u017ee norma stanovuje, \u017ee sily na roztrhnutie by mali <strong data-start=\"3022\" data-end=\"3029\">nie<\/strong> normalizova\u0165 pod\u013ea hr\u00fabky vo ve\u013ek\u00fdch odch\u00fdlkach, preto\u017ee to m\u00f4\u017ee vies\u0165 k nepresn\u00fdm z\u00e1verom.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Obmedzenia materi\u00e1lu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">ASTM D1004 sa najlep\u0161ie uplat\u0148uje, ke\u010f:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Film <strong data-start=\"3202\" data-end=\"3239\">nezlyh\u00e1va krehko.<\/strong><\/li>\n\n\n\n<li>Roz\u0161\u00edrenie materi\u00e1lu je <strong data-start=\"3270\" data-end=\"3288\">menej ako 200%<\/strong><\/li>\n\n\n\n<li>Rozdiely v hr\u00fabke zost\u00e1vaj\u00fa v r\u00e1mci <strong data-start=\"3328\" data-end=\"3336\">\u00b110%<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tieto obmedzenia zachov\u00e1vaj\u00fa d\u00f4veryhodnos\u0165 v\u00fdsledkov a zabra\u0148uj\u00fa chyb\u00e1m sp\u00f4soben\u00fdm extr\u00e9mnym pred\u013a\u017een\u00edm alebo frakt\u00farovan\u00edm.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Postup testovania pod\u013ea normy ASTM D1004 krok za krokom<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Pr\u00edprava vzorky<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pripravte vzorky pod\u013ea \u0161tandardizovan\u00fdch rozmerov a geometrie z\u00e1rezov. Na zv\u00fd\u0161enie presnosti merajte hr\u00fabku vo viacer\u00fdch bodoch v oblasti z\u00e1rezu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Nastavenie stroja<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Po\u010diato\u010dn\u00e9 oddelenie uchopenia: <strong data-start=\"3784\" data-end=\"3795\">25,4 mm<\/strong><\/li>\n\n\n\n<li>R\u00fdchlos\u0165 uchopenia: <strong data-start=\"3815\" data-end=\"3828\">51 mm\/min<\/strong><\/li>\n\n\n\n<li>Re\u017eim oddelenia s kon\u0161tantnou r\u00fdchlos\u0165ou uchopenia<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Polohovanie<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Dlh\u00fa os vzorky zarovnajte so stredovou osou \u00fachytov, aby ste zabr\u00e1nili skr\u00fateniu alebo nerovnomern\u00e9mu za\u0165a\u017eeniu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Vykonanie testu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0164ahajte vzorku, k\u00fdm ned\u00f4jde k \u00fapln\u00e9mu pretrhnutiu. Zariadenie zaznamen\u00e1va \u00fadaje o \u010dase za\u0165a\u017eenia alebo za\u0165a\u017een\u00ed a posunut\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Zaznamen\u00e1vanie a v\u00fdpo\u010det \u00fadajov<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Maxim\u00e1lne za\u0165a\u017eenie pri roztrhnut\u00ed zaznamenan\u00e9 do <strong data-start=\"4222\" data-end=\"4251\">tri v\u00fdznamn\u00e9 \u010d\u00edsla<\/strong><\/li>\n\n\n\n<li>Maxim\u00e1lne roz\u0161\u00edrenie zaznamenan\u00e9 na <strong data-start=\"4289\" data-end=\"4316\">dve v\u00fdznamn\u00e9 \u010d\u00edsla<\/strong><\/li>\n\n\n\n<li>Priemer a \u0161tandardn\u00e1 odch\u00fdlka vypo\u010d\u00edtan\u00e9 pre ka\u017ed\u00fa orient\u00e1ciu filmu<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdber spr\u00e1vneho hrobov\u00e9ho testera<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pou\u017e\u00edvanie spr\u00e1vneho zariadenia je nevyhnutn\u00e9 na dosiahnutie stabiln\u00fdch, vysoko presn\u00fdch \u00fadajov o inici\u00e1cii trhania. Modern\u00fd testovac\u00ed stroj mus\u00ed poskytova\u0165 presn\u00e9 meranie sily, stabiln\u00e9 riadenie pohonu, spr\u00e1vne nastavenie uchopenia a prisp\u00f4sobite\u013en\u00e9 pr\u00edpravky na vzorky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pom\u00f4c\u0165 laborat\u00f3ri\u00e1m efekt\u00edvne splni\u0165 tieto po\u017eiadavky, <strong data-start=\"4890\" data-end=\"4928\">Spolo\u010dnos\u0165 Cell Instruments pon\u00faka model TST-01<\/strong>, univerz\u00e1lny syst\u00e9m na testovanie \u0165ahu a roztrhnutia navrhnut\u00fd na anal\u00fdzu f\u00f3li\u00ed s vysokou opakovate\u013enos\u0165ou. TST-01 m\u00e1 presn\u00fa regul\u00e1ciu r\u00fdchlosti, pevn\u00fa kon\u0161trukciu r\u00e1mu a \u0161pecializovan\u00e9 pr\u00edpravky vhodn\u00e9 na <strong data-start=\"5128\" data-end=\"5156\">Merania Gravesovej slzy<\/strong>, \u010do z neho rob\u00ed vynikaj\u00facu vo\u013ebu pre spolo\u010dnosti, ktor\u00fdch cie\u013eom je dosiahnu\u0165 \u00fapln\u00fd s\u00falad s normou ASTM D1004 a z\u00e1rove\u0148 zlep\u0161i\u0165 pracovn\u00fd postup testovania.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\n\t\t\t\tKontaktujte n\u00e1s Z\u00edskajte rie\u0161enie na testovanie pod\u013ea normy ASTM D1004\t\t\t\t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pre laborat\u00f3ri\u00e1, ktor\u00e9 sa sna\u017eia o spo\u013eahliv\u00e9, opakovate\u013en\u00e9 a efekt\u00edvne dodr\u017eiavanie <a href=\"https:\/\/www.astm.org\/d1004-21.html\" target=\"_blank\" rel=\"noopener nofollow\"><strong>ASTM D1004<\/strong><\/a>, pokro\u010dil\u00e9 rie\u0161enia, ako napr. <strong data-start=\"6087\" data-end=\"6114\">Cell Instruments TST-01<\/strong> poskytuj\u00fa v\u00fdznamn\u00fa hodnotu a pom\u00e1haj\u00fa zabezpe\u010di\u0165 vysok\u00e9 \u0161tandardy pri hodnoten\u00ed v\u00fdkonnosti materi\u00e1lov.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM D1004 &amp; Graves Tear &amp; Tear Resistance Test Graves Tear \u2014 What It Measures The Graves tear test evaluates the force required to initiate tearing in a notched specimen. Unlike other tear methods that measure propagation, this method focuses on the moment where tearing begins, providing insight into stress concentration response and material toughness. [&hellip;]<\/p>","protected":false},"featured_media":8068,"parent":0,"template":"","meta":{"_acf_changed":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"standard-category":[611],"class_list":["post-9863","standard","type-standard","status-publish","has-post-thumbnail","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/standard\/9863","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/media\/8068"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/media?parent=9863"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/standard-category?post=9863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}