{"id":9864,"date":"2026-02-24T15:11:46","date_gmt":"2026-02-24T07:11:46","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/astm-d624\/"},"modified":"2026-03-12T12:01:07","modified_gmt":"2026-03-12T04:01:07","slug":"astm-d624","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/cs\/standard\/astm-d624\/","title":{"rendered":"ASTM D624"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Pevnost pry\u017ee v tahu a jej\u00ed v\u00fdznam<\/h2>\n\n\n\n<p>The <strong data-start=\"1487\" data-end=\"1511\">pevnost pry\u017ee v roztr\u017een\u00ed<\/strong> ud\u00e1v\u00e1, jak \u00fa\u010dinn\u011b materi\u00e1l odol\u00e1v\u00e1 vzniku nebo \u0161\u00ed\u0159en\u00ed trhliny. Zat\u00edmco pevnost v tahu m\u011b\u0159\u00ed celkovou schopnost prota\u017een\u00ed, pevnost v tahu se zam\u011b\u0159uje na <em data-start=\"1695\" data-end=\"1721\">re\u00e1ln\u00e9 zp\u016fsoby selh\u00e1n\u00ed<\/em>. Ostr\u00e9 hrany, cyklick\u00e9 zat\u00ed\u017een\u00ed, od\u011br nebo usazen\u00e9 \u010d\u00e1stice \u010dasto zp\u016fsobuj\u00ed lok\u00e1ln\u00ed nap\u011bt\u00ed, kter\u00e9 zp\u016fsobuje, \u017ee nej\u010dast\u011bj\u0161\u00edm mechanismem po\u0161kozen\u00ed v provozu je trh\u00e1n\u00ed.<\/p>\n\n\n\n<p>V\u00fdkonnost p\u0159i trh\u00e1n\u00ed ovliv\u0148uje n\u011bkolik faktor\u016f, v\u010detn\u011b rozlo\u017een\u00ed nap\u011bt\u00ed, rychlosti deformace, geometrie vzorku a p\u0159\u00edtomnosti vrub\u016f. Norma ASTM D624 poskytuje kontrolovanou a opakovatelnou metodu pro kvantifikaci t\u011bchto vliv\u016f, kter\u00e1 umo\u017e\u0148uje konstrukt\u00e9r\u016fm a odborn\u00edk\u016fm na kontrolu kvality prov\u00e1d\u011bt spolehliv\u00e1 srovn\u00e1n\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Standardn\u00ed po\u017eadavky na zkou\u0161ku pevnosti v tahu<\/h2>\n\n\n\n<p>The <strong data-start=\"2238\" data-end=\"2269\">norma pro zkou\u0161ku pevnosti v tahu<\/strong> specifikuje postupy p\u0159\u00edpravy vzork\u016f, jejich kondicionov\u00e1n\u00ed a postupn\u00e9ho zvy\u0161ov\u00e1n\u00ed zat\u00ed\u017een\u00ed a\u017e do \u00fapln\u00e9ho roztr\u017een\u00ed. Zkou\u0161e\u010dka tahu t\u00e1hne vzorek definovanou rychlost\u00ed k\u0159\u00ed\u017eov\u00e9 hlavy. Zaznamenan\u00e1 s\u00edla na jednotku tlou\u0161\u0165ky p\u0159edstavuje pevnost v tahu.<\/p>\n\n\n\n<p>Podle normy:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vzorky typu A, B a C pou\u017e\u00edvaj\u00ed <strong data-start=\"2599\" data-end=\"2618\">500 \u00b1 50 mm\/min<\/strong> separa\u010dn\u00ed rychlost.<\/li>\n\n\n\n<li>Vzorky typu T a CP pou\u017e\u00edvaj\u00ed <strong data-start=\"2667\" data-end=\"2684\">50 \u00b1 5 mm\/min<\/strong> rychlost.<\/li>\n\n\n\n<li>Spr\u00e1vn\u00e9 vyrovn\u00e1n\u00ed vzorku zaji\u0161\u0165uje rovnom\u011brn\u00e9 nam\u00e1h\u00e1n\u00ed a zabra\u0148uje prokluzov\u00e1n\u00ed rukojeti.<\/li>\n\n\n\n<li>V\u00fdsledky test\u016f z r\u016fzn\u00fdch geometri\u00ed nejsou vz\u00e1jemn\u011b zam\u011bniteln\u00e9, proto\u017ee ka\u017ed\u00e1 konstrukce charakterizuje jin\u00fd mechanismus trh\u00e1n\u00ed.<\/li>\n<\/ul>\n\n\n\n<p>Tyto rozd\u00edly umo\u017e\u0148uj\u00ed u\u017eivatel\u016fm p\u0159izp\u016fsobit testov\u00e1n\u00ed konkr\u00e9tn\u00edm podm\u00ednk\u00e1m v\u00fdrobku.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM D624 Typ A, Typ B, Typ C, Typ T a Typ CP<\/h2>\n\n\n\n<p>Norma ASTM D624 obsahuje n\u011bkolik typ\u016f vzork\u016f, z nich\u017e ka\u017ed\u00fd zachycuje jin\u00e9 chov\u00e1n\u00ed p\u0159i poru\u0161e. Tyto varianty \u00fazce odpov\u00eddaj\u00ed r\u016fzn\u00fdm aplikac\u00edm elastomer\u016f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ASTM D624 typ A - p\u016flm\u011bs\u00edc pro men\u0161\u00ed vzorky<\/h3>\n\n\n\n<p><strong data-start=\"3703\" data-end=\"3723\">ASTM D624 typ A<\/strong> se podob\u00e1 typu B, ale bez prodlou\u017een\u00fdch konc\u016f v\u00fdstupk\u016f. Laborato\u0159e pou\u017e\u00edvaj\u00ed typ A, pokud pracuj\u00ed s men\u0161\u00edmi lisovan\u00fdmi sou\u010d\u00e1stmi nebo s omezen\u00fdm mno\u017estv\u00edm materi\u00e1lu. M\u011b\u0159\u00ed tak\u00e9 \u0161\u00ed\u0159en\u00ed trhlin, ale m\u016f\u017ee vykazovat m\u00edrn\u011b odli\u0161n\u00e9 rozlo\u017een\u00ed nap\u011bt\u00ed kv\u016fli krat\u0161\u00ed d\u00e9lce m\u011b\u0159idla.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ASTM D624 typ B - p\u016flm\u011bs\u00edc s v\u00fdstupky<\/h3>\n\n\n\n<p><strong data-start=\"3277\" data-end=\"3297\">ASTM D624 typ B<\/strong> je jednou z nej\u010dast\u011bji preferovan\u00fdch geometri\u00ed. M\u00e1 tvar p\u016flm\u011bs\u00edce s roz\u0161\u00ed\u0159en\u00fdmi v\u00fdstupky, kter\u00e9 zlep\u0161uj\u00ed stabilitu p\u0159i uchopen\u00ed. Tento typ m\u011b\u0159\u00ed <strong data-start=\"3455\" data-end=\"3484\">pevnost p\u0159i \u0161\u00ed\u0159en\u00ed trhliny<\/strong>, tak\u017ee je ide\u00e1ln\u00ed pro obecnou kontrolu kvality pry\u017ee. V\u00fdrobci \u010dasto vol\u00ed typ B v p\u0159\u00edpad\u011b, \u017ee je p\u016fvodn\u00ed list dostate\u010dn\u011b velk\u00fd pro p\u0159\u00edpravu po\u017eadovan\u00fdch rozm\u011br\u016f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ASTM D624 typ C - vzorek s 90stup\u0148ov\u00fdm vrcholem<\/h3>\n\n\n\n<p><strong data-start=\"4049\" data-end=\"4069\">ASTM D624 typ C<\/strong> m\u00e1 z\u0159eteln\u00fd \u00fahel 90 stup\u0148\u016f bez z\u00e1\u0159ezu. Koncentrace nap\u011bt\u00ed na vrcholu pom\u00e1h\u00e1 vyhodnotit <strong data-start=\"4170\" data-end=\"4198\">pevnost p\u0159i iniciaci trh\u00e1n\u00ed<\/strong>, co\u017e je rozhoduj\u00edc\u00ed p\u0159i posuzov\u00e1n\u00ed poruch zp\u016fsoben\u00fdch ostr\u00fdmi rohy nebo zapu\u0161t\u011bn\u00fdmi vadami. Pokud trhlina neza\u010d\u00edn\u00e1 na vrcholu, mohou v\u00fdsledky p\u0159ipom\u00ednat pevnost v tahu, proto je z\u00e1sadn\u00ed spr\u00e1vn\u00e1 p\u0159\u00edprava vzorku.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ASTM D624 Typ T - Vzorek na roztr\u017een\u00ed kalhot<\/h3>\n\n\n\n<p><strong data-start=\"4457\" data-end=\"4477\">ASTM D624 typ T<\/strong> se skl\u00e1d\u00e1 z geometrie rozd\u011blen\u00e9 nohavice p\u0159ipom\u00ednaj\u00edc\u00ed tvar kalhot. M\u011b\u0159\u00ed \u0161\u00ed\u0159en\u00ed trhliny po cel\u00e9 d\u00e9lce vzorku. Typ T se \u0161iroce pou\u017e\u00edv\u00e1 pro pru\u017en\u00e9 elastomerov\u00e9 f\u00f3lie, tenk\u00e9 desky a m\u011bkk\u00e9 sm\u011bsi TPE.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ASTM D624 Typ CP - Trh\u00e1n\u00ed s omezenou dr\u00e1hou<\/h3>\n\n\n\n<p><strong data-start=\"4735\" data-end=\"4756\">ASTM D624 Typ CP<\/strong> je modifikac\u00ed typu T. Pou\u017e\u00edv\u00e1 <strong data-start=\"4796\" data-end=\"4821\">omezen\u00e1 dr\u00e1ha trh\u00e1n\u00ed<\/strong> a siln\u011bj\u0161\u00ed nohy, kter\u00e9 zaji\u0161\u0165uj\u00ed, \u017ee trhlina z\u016fstane vyrovnan\u00e1, co\u017e je obzvl\u00e1\u0161t\u011b vhodn\u00e9 pro materi\u00e1ly n\u00e1chyln\u00e9 k odchylk\u00e1m nebo nadm\u011brn\u00e9mu rozta\u017een\u00ed. To vede ke stabiln\u011bj\u0161\u00edm a opakovateln\u011bj\u0161\u00edm v\u00fdsledk\u016fm \u0161\u00ed\u0159en\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdb\u011br spr\u00e1vn\u00e9ho testeru pevnosti v tahu<\/h2>\n\n\n\n<p>V\u00fdb\u011br vhodn\u00e9ho <strong data-start=\"5104\" data-end=\"5131\">zkou\u0161e\u010dka pevnosti v tahu<\/strong> zaji\u0161\u0165uje p\u0159esn\u00e9 a konzistentn\u00ed v\u00fdsledky. Tester mus\u00ed udr\u017eovat stabiln\u00ed rychlost k\u0159\u00ed\u017eov\u00e9 hlavy, poskytovat citliv\u00e9 m\u011b\u0159en\u00ed s\u00edly a podporovat r\u016fzn\u00e9 konfigurace \u00fachopu.<\/p>\n\n\n\n<p>The <strong data-start=\"5306\" data-end=\"5348\">Cell Instruments TST-01 Zkou\u0161e\u010dka pevnosti v tahu<\/strong> je vynikaj\u00edc\u00ed volbou pro testov\u00e1n\u00ed podle normy ASTM D624 d\u00edky sv\u00e9:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P\u0159esn\u00e1 zat\u011b\u017eovac\u00ed bu\u0148ka a vysok\u00e1 vzorkovac\u00ed frekvence<\/li>\n\n\n\n<li>Stabiln\u00ed pohyb k\u0159\u00ed\u017eov\u00e9 hlavy pro vysokorychlostn\u00ed i n\u00edzkorychlostn\u00ed trhac\u00ed zkou\u0161ky<\/li>\n\n\n\n<li>Kompatibilita se sv\u00edtidly typu A, B, C, T a CP<\/li>\n\n\n\n<li>P\u0159izp\u016fsobivost pro v\u00fdzkum a v\u00fdvoj i b\u011b\u017enou kontrolu kvality<\/li>\n<\/ul>\n\n\n\n<p>Jeho schopnost p\u0159ep\u00ednat mezi r\u016fzn\u00fdmi re\u017eimy trh\u00e1n\u00ed umo\u017e\u0148uje laborato\u0159\u00edm prov\u00e1d\u011bt celou \u0161k\u00e1lu test\u016f podle normy ASTM D624 pomoc\u00ed jedin\u00e9ho za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kontaktujte n\u00e1s Z\u00edskejte \u0159e\u0161en\u00ed pro testov\u00e1n\u00ed podle normy ASTM D624 <\/h2>\n\n\n\n<p><a href=\"https:\/\/www.astm.org\/d0624-00r20.html\" target=\"_blank\" rel=\"noopener nofollow\">ASTM D624<\/a> poskytuje komplexn\u00ed r\u00e1mec pro hodnocen\u00ed chov\u00e1n\u00ed pry\u017ee a TPE p\u0159i trh\u00e1n\u00ed. Jeho v\u00edce typ\u016f vzork\u016f umo\u017e\u0148uje u\u017eivatel\u016fm zachytit vznik a \u0161\u00ed\u0159en\u00ed trhliny v r\u016fzn\u00fdch aplikac\u00edch. Pomoc\u00ed spolehliv\u00fdch p\u0159\u00edstroj\u016f, jako je nap\u0159. <strong data-start=\"6591\" data-end=\"6616\"><a href=\"https:\/\/www.packqc.com\/cs\/products\/sale-packaging-tensile-strength-tester-film\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zkou\u0161e\u010dka tahu TST-01<\/a><\/strong>, mohou laborato\u0159e dos\u00e1hnout konzistentn\u00edch, p\u0159esn\u00fdch a opakovateln\u00fdch v\u00fdsledk\u016f, kter\u00e9 zvy\u0161uj\u00ed kvalitu v\u00fdrobk\u016f a posiluj\u00ed rozhodnut\u00ed v oblasti materi\u00e1lov\u00e9ho in\u017een\u00fdrstv\u00ed. Pro v\u00fdrobce a pracovn\u00edky zab\u00fdvaj\u00edc\u00ed se kvalitou, kte\u0159\u00ed hledaj\u00ed spolehliv\u00e9 hodnocen\u00ed trhlin, z\u016fst\u00e1v\u00e1 norma ASTM D624 nepostradatelnou.<\/p>\n\n\n\n<p><\/p>","protected":false},"featured_media":8078,"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":""}}},"class_list":["post-9864","standard","type-standard","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/standard\/9864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/media\/8078"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/media?parent=9864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}