{"id":589,"date":"2026-02-26T05:44:05","date_gmt":"2026-02-26T05:44:05","guid":{"rendered":"https:\/\/www.teartester.com\/?post_type=method&p=589"},"modified":"2026-02-27T08:59:17","modified_gmt":"2026-02-27T08:59:17","slug":"tear-strength-test","status":"publish","type":"method","link":"https:\/\/www.teartester.com\/lt\/method\/tear-strength-test\/","title":{"rendered":"Ply\u0161imo stiprumo bandymas"},"content":{"rendered":"

ASTM D624 apibr\u0117\u017eti bandymo principai<\/h2>\n\n\n\n

ASTM D624<\/a> ply\u0161imo stipris apib\u016bdinamas kaip did\u017eiausia j\u0117ga, reikalinga ply\u0161imui \u012ftr\u016bkti, prasid\u0117ti ar plisti, padalinta i\u0161 bandinio storio. Atliekant bandym\u0105, tempimo stiprumo testeris veikia pastoviu kry\u017emin\u0117s galvut\u0117s grei\u010diu tol, kol gumos bandinys visi\u0161kai ply\u0161ta.<\/p>\n\n\n\n

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\"Ply\u0161imo<\/figure>\n<\/div>\n\n\n\n
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Gumos ir elastomer\u0173 atsparumo ply\u0161imui bandymas<\/h2>\n\n\n\n

A atsparumo ply\u0161imui bandymas<\/strong> kontroliuojama tempimo deformacija parengtam bandiniui, naudojant tempimo bandymo ma\u0161in\u0105. Bandymas t\u0119siamas tol, kol \u012fvyksta visi\u0161kas ply\u0161imas. Kadangi guma ir elastomerai pasi\u017eymi sud\u0117tinga deformacine elgsena, ASTM D624 standarte pabr\u0117\u017eiamas nuoseklus bandini\u0173 paruo\u0161imas, lyginimas ir bandymo greitis, kad b\u016bt\u0173 u\u017etikrintas rezultat\u0173 pakartojamumas.<\/p>\n\n\n\n

Svarbu pa\u017eym\u0117ti, kad guma ir elastomerai<\/strong> skirtingai reaguoja \u012f ply\u0161im\u0105, priklausomai nuo sud\u0117ties, kiet\u0117jimo, u\u017epildo kiekio ir orientacijos. Tod\u0117l ASTM D624 standarte apibr\u0117\u017eti keli bandini\u0173 tipai, kuri\u0173 kiekvienas skirtas atspind\u0117ti skirting\u0105 ply\u0161imo mechanizm\u0105, o ne vien\u0105 universali\u0105 vert\u0119.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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M\u0117ginio paruo\u0161imas ir bandymo proced\u016bra<\/h2>\n\n\n\n

Tikslus atsparumo ply\u0161imui bandymas prasideda nuo kruop\u0161taus m\u0117ginio paruo\u0161imo. Gumos bandiniai turi b\u016bti vienodo storio, \u0161vari\u0173 kra\u0161t\u0173 ir tikslios geometrijos. Bet koks nelygumas gali tur\u0117ti didel\u0117s \u012ftakos bandymo rezultatams.<\/p>\n\n\n\n

Bandin\u012f tempimo bandymo ma\u0161inos rankenose sumontuokite centrin\u0117je pad\u0117tyje, u\u017etikrindami, kad jis b\u016bt\u0173 tinkamai i\u0161lygintas, kad b\u016bt\u0173 i\u0161vengta lenkimo ar sukimo j\u0117g\u0173. Veikiama tempimo apkrova nustatytu pastoviu grei\u010diu, kol baigsis ply\u0161imas. U\u017era\u0161ykite j\u0117gos ir poslinkio kreiv\u0119 ir nustatykite did\u017eiausias arba vidutines j\u0117gas pagal pasirinkt\u0105 bandinio tip\u0105.<\/p>\n<\/div>\n\n\n\n

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\"Gumos<\/figure>\n<\/div>\n<\/div>\n\n\n\n

Kod\u0117l atsparumo ply\u0161imui bandymai svarb\u016bs gumos naudojimui<\/h2>\n\n\n\n

Eksploatuojant gumos gaminiai retai sugenda vien d\u0117l tolygaus tempimo. Vietoj to gedimai da\u017enai prasideda nuo a\u0161tri\u0173 kra\u0161t\u0173, \u012fterpt\u0173 daleli\u0173 arba vietini\u0173 \u012ftempimo ta\u0161k\u0173. Ply\u0161imo stiprumo bandymai padeda in\u017einieriams suprasti, kaip greitai ir lengvai gali padid\u0117ti prad\u0117j\u0119s did\u0117ti ply\u0161imas.<\/p>\n\n\n\n

Kokyb\u0117s kontrol\u0117s komandoms ply\u0161imo stiprumo bandymas padeda palyginti med\u017eiagas, kontroliuoti procesus ir atlikti \u012fve\u017eam\u0173 gamini\u0173 patikr\u0105. Gamini\u0173 projektuotojams jis padeda nustatyti, ar med\u017eiaga tinka sud\u0117tingoms reikm\u0117ms, pvz., dinami\u0161kiems sandarikliams ar dilimui jautrioje aplinkoje.<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":true},"class_list":["post-589","method","type-method","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.teartester.com\/lt\/wp-json\/wp\/v2\/method\/589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.teartester.com\/lt\/wp-json\/wp\/v2\/method"}],"about":[{"href":"https:\/\/www.teartester.com\/lt\/wp-json\/wp\/v2\/types\/method"}],"wp:attachment":[{"href":"https:\/\/www.teartester.com\/lt\/wp-json\/wp\/v2\/media?parent=589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}