{"id":15616,"date":"2024-09-18T07:49:41","date_gmt":"2024-09-18T05:49:41","guid":{"rendered":"https:\/\/dev.shimadzu-testing.com\/?p=15616"},"modified":"2025-02-05T11:32:42","modified_gmt":"2025-02-05T10:32:42","slug":"three-point-bending-flexural-test-for-plastics","status":"publish","type":"post","link":"https:\/\/shimadzu-testing.com\/sk\/vediet-ako\/bending-testing\/three-point-bending-flexural-test-for-plastics\/","title":{"rendered":"Sk\u00fa\u0161ka ohybom v troch bodoch pre plasty"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"15616\" class=\"elementor elementor-15616\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e15197 e-flex e-con-boxed e-con e-parent\" data-id=\"4e15197\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a8c5eeb elementor-widget elementor-widget-text-editor\" data-id=\"a8c5eeb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2><strong>\u00davod<\/strong><\/h2>\n<p>Na z\u00e1klade svojich tepeln\u00fdch vlastnost\u00ed a n\u00edzkej hmotnosti sa plasty v poslednom \u010dase za\u010dali pou\u017e\u00edva\u0165 v r\u00f4znych aplik\u00e1ci\u00e1ch a odvetviach, od mal\u00fdch prevodoviek a\u017e po trupy lietadiel. Na vyhodnotenie t\u00fdchto materi\u00e1lov sa mus\u00ed vykona\u0165 cel\u00fd rad sk\u00fa\u0161ok, od sk\u00fa\u0161ok \u0165ahom a\u017e po sk\u00fa\u0161ky ohybom a tlakom. Z nich sa sk\u00fa\u0161ka ohybom vykon\u00e1va na presk\u00famanie vlastnost\u00ed materi\u00e1lu pri oh\u00fdban\u00ed vonkaj\u0161ou silou. Ke\u010f\u017ee komponenty vystaven\u00e9 vonkaj\u0161ej sile sa oh\u00fdbaj\u00fa v reakcii na ohybov\u00fd moment, sk\u00fa\u0161ka ohybom je jednou z najz\u00e1kladnej\u0161\u00edch sk\u00fa\u0161ok pou\u017e\u00edvan\u00fdch na hodnotenie materi\u00e1lov. Predch\u00e1dzaj\u00face sk\u00fa\u0161obn\u00e9 normy, ktor\u00e9 definuj\u00fa trojbodov\u00fa sk\u00fa\u0161ku ohybom pre plasty, nevy\u017eadovali syst\u00e9m merania priehybu. V d\u00f4sledku toho sa pri sk\u00fa\u0161kach zis\u0165ovala vzorka, priehyb n\u00e1stroja a vtl\u00e1\u010danie indentora spolu ako s\u00fa\u010det, \u010do je met\u00f3da nevhodn\u00e1 na presn\u00e9 meranie modulu pru\u017enosti v ohybe. Zmenen\u00e9 normy (ISO178:2010, Amd.1:2013 a JIS K 7171:2016)<\/p>\n<p>boli zmenen\u00e9 a doplnen\u00e9 a zah\u0155\u0148aj\u00fa bu\u010f pou\u017eitie vych\u00fdlenia<\/p>\n<p>merac\u00ed syst\u00e9m s absol\u00fatnou presnos\u0165ou \"ISO 9513 Class 1\" v rozsahu 1 % alebo pou\u017eitie korekcie zhody na odstr\u00e1nenie vych\u00fdlenia sk\u00fa\u0161obn\u00e9ho stroja. Na vzork\u00e1ch z PC, PVC a GFRP sa vykonala trojbodov\u00e1 sk\u00fa\u0161ka ohybom v s\u00falade s novelizovan\u00fdmi normami, pri\u010dom modul pru\u017enosti v ohybe ka\u017ed\u00e9ho plastu sa vypo\u010d\u00edtal pomocou posunu kr\u00ed\u017eovej hlavy, korekcie zhody a meracieho pr\u00edstroja na meranie priehybu.<\/p>\n<p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-efdf405 elementor-widget elementor-widget-text-editor\" data-id=\"efdf405\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2><strong>Syst\u00e9m merania<\/strong><\/h2>\n<p>Merania sa uskuto\u010dnili pomocou stolov\u00e9ho pr\u00edstroja AGS-X\ntypu univerz\u00e1lneho sk\u00fa\u0161obn\u00e9ho pr\u00edstroja a pr\u00edstroja na meranie priehybov\ns presnos\u0165ou merania do\n3,4 \u03bcm. Po\u017eiadavky zmenen\u00fdch a doplnen\u00fdch noriem pri\npriemern\u00e1 hr\u00fabka vzorky je 4 mm, s\u00fa uveden\u00e9 na obr. 1. .\nhodnota relevantn\u00e1 pre v\u00fdpo\u010det modulu pru\u017enosti v ohybe je 341 \u03bcm,\npri\u010dom pr\u00edstroj na meranie priehybu s absol\u00fatnym\npresnos\u0165ou 1 % tejto hodnoty (3,4 \u03bcm) (obr. 1).\nukazuje modul pru\u017enosti v ohybe vypo\u010d\u00edtan\u00fd na z\u00e1klade\nna z\u00e1klade sklonu v dvoch bodoch, hoci modul pru\u017enosti v ohybe\npru\u017enosti by sa mohol vypo\u010d\u00edta\u0165 aj na z\u00e1klade line\u00e1rneho\nregresie krivky).\nV tabu\u013ek\u00e1ch 1, 2 a 3 s\u00fa uveden\u00e9 podrobnosti o pr\u00edstrojoch, vzork\u00e1ch,\na pou\u017eit\u00fdch sk\u00fa\u0161obn\u00fdch podmienkach. Na obr. 2 je zn\u00e1zornen\u00fd sk\u00fa\u0161obn\u00fd pr\u00edstroj\nusporiadanie. V zmenen\u00fdch a doplnen\u00fdch norm\u00e1ch sa opisuje met\u00f3da A, ktor\u00e1\npou\u017e\u00edva kon\u0161tantn\u00fa sk\u00fa\u0161obn\u00fa r\u00fdchlos\u0165, a met\u00f3du B, ktor\u00e1 zvy\u0161uje\nsk\u00fa\u0161obn\u00fa r\u00fdchlos\u0165 po meran\u00ed modulu pru\u017enosti v ohybe. Sk\u00fa\u0161ka\nA bola pou\u017eit\u00e1 s GFRP, ktor\u00fd m\u00e1 mal\u00e9 maxim\u00e1lne\na sk\u00fa\u0161obn\u00e1 met\u00f3da B bola pou\u017eit\u00e1 s PC a PVC\nktor\u00e9 maj\u00fa ve\u013ek\u00fa maxim\u00e1lnu ohybov\u00fa deform\u00e1ciu, a sk\u00fa\u0161obn\u00e1 met\u00f3da\nr\u00fdchlosti bol nastaven\u00fd na 0,3 % ohybovej deform\u00e1cie.\nOkrem toho, ke\u010f\u017ee podiel vonkaj\u0161ej sily\npripadaj\u00faceho na \u0161mykov\u00fa silu, sa zvy\u0161uje, ke\u010f sa rozp\u00e4tie\nmedzi podperami je mal\u00e9*1, normy odpor\u00fa\u010daj\u00fa\nrozp\u00e4tie medzi podperami vzorky je 16 \u00b1 1 n\u00e1sobok priemernej hodnoty\nhr\u00fabky vzorky.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-413e636 e-grid e-con-full e-con e-child\" data-id=\"413e636\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2206f5f elementor-widget elementor-widget-image\" data-id=\"2206f5f\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-fig1-amended-standards-requirements.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"three-point-bending-flexural-test-for-plastics-fig1-amended-standards-requirements\" data-elementor-lightbox-description=\"Fig. 1 Amended Standards Requirements\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTU2NTksInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL3RocmVlLXBvaW50LWJlbmRpbmctZmxleHVyYWwtdGVzdC1mb3ItcGxhc3RpY3MtZmlnMS1hbWVuZGVkLXN0YW5kYXJkcy1yZXF1aXJlbWVudHMuanBnIn0%3D\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"821\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-fig1-amended-standards-requirements-768x821.jpg\" class=\"attachment-medium_large size-medium_large wp-image-15659\" alt=\"Obr. 1 Zmenen\u00e9 po\u017eiadavky na normy\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Obr. 1 Zmenen\u00e9 po\u017eiadavky na normy<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f029c7 elementor-widget elementor-widget-image\" data-id=\"7f029c7\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-table-1-equipment-details.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"three-point-bending-flexural-test-for-plastics-table-1-equipment-details\" data-elementor-lightbox-description=\"Table 1 Equipment Details\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTU2NjQsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL3RocmVlLXBvaW50LWJlbmRpbmctZmxleHVyYWwtdGVzdC1mb3ItcGxhc3RpY3MtdGFibGUtMS1lcXVpcG1lbnQtZGV0YWlscy5qcGcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"768\" height=\"141\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-table-1-equipment-details-768x141.jpg\" class=\"attachment-medium_large size-medium_large wp-image-15664\" alt=\"Tabu\u013eka 1 Podrobnosti o zariaden\u00ed\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Tabu\u013eka 1 Podrobnosti o zariaden\u00ed<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8890d93 e-grid e-con-full e-con e-child\" data-id=\"8890d93\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-74217d8 elementor-widget elementor-widget-image\" data-id=\"74217d8\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-table-2-specimen-information.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"three-point-bending-flexural-test-for-plastics-table-2-specimen-information\" data-elementor-lightbox-description=\"Table 2 Specimen Information\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTU2NjUsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL3RocmVlLXBvaW50LWJlbmRpbmctZmxleHVyYWwtdGVzdC1mb3ItcGxhc3RpY3MtdGFibGUtMi1zcGVjaW1lbi1pbmZvcm1hdGlvbi5qcGcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"670\" height=\"91\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-table-2-specimen-information.jpg\" class=\"attachment-medium_large size-medium_large wp-image-15665\" alt=\"Tabu\u013eka 2 Inform\u00e1cie o vzorke\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Tabu\u013eka 2 Inform\u00e1cie o vzorke<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40d0ad1 elementor-widget elementor-widget-image\" data-id=\"40d0ad1\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-table-3-test-conditions.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"three-point-bending-flexural-test-for-plastics-table-3-test-conditions\" data-elementor-lightbox-description=\"Table 3 Test Conditions\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTU2NjYsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL3RocmVlLXBvaW50LWJlbmRpbmctZmxleHVyYWwtdGVzdC1mb3ItcGxhc3RpY3MtdGFibGUtMy10ZXN0LWNvbmRpdGlvbnMuanBnIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"151\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-table-3-test-conditions-768x151.jpg\" class=\"attachment-medium_large size-medium_large wp-image-15666\" alt=\"Tabu\u013eka 3 Testovacie podmienky\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Tabu\u013eka 3 Testovacie podmienky<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-386b200 elementor-widget elementor-widget-text-editor\" data-id=\"386b200\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2><strong>V\u00fdsledky testov<\/strong><\/h2>\nNa obr. 3 s\u00fa zn\u00e1zornen\u00e9 krivky ohybov\u00e9ho nap\u00e4tia\/ohybovej deform\u00e1cie. Ohybov\u00e9\nna vodorovnej osi bola vypo\u010d\u00edtan\u00e1 na z\u00e1klade v\u00fdsledkov\nnameran\u00fdch pomocou syst\u00e9mu na meranie priehybov. .\nkrivka ukazuje n\u00e1hly pokles ohybov\u00e9ho nap\u00e4tia pri pou\u017eit\u00ed GFRP,\nale \u017eiadny n\u00e1hly pokles ohybov\u00e9ho nap\u00e4tia pri PC a PVC\nke\u010f\u017ee tieto vzorky sa n\u00e1hle nezlomili. Tabu\u013eka 4 ukazuje\nv\u00fdsledky z\u00edskan\u00e9 pre pevnos\u0165 v ohybe a pevnos\u0165 v ohybe\nmodulu pru\u017enosti pre ka\u017ed\u00fd materi\u00e1l.\nV tabu\u013eke 5 je uveden\u00e9 porovnanie modulu pru\u017enosti v ohybe\npru\u017enosti vypo\u010d\u00edtan\u00e9ho na z\u00e1klade posunu prie\u010dnej hlavy,\nkorekcie zhody a merania priehybu\nsyst\u00e9mu. Z v\u00fdsledkov vypl\u00fdva, \u017ee modul pru\u017enosti v ohybe\npru\u017enosti je vy\u0161\u0161\u00ed v porad\u00ed posunutia prie\u010dnej hlavy,\nkorekcie zhody a merania priehybu\nsyst\u00e9mu.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2e696ce e-grid e-con-full e-con e-child\" data-id=\"2e696ce\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5b38999 elementor-widget elementor-widget-image\" data-id=\"5b38999\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-fig3-test-results.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"three-point-bending-flexural-test-for-plastics-fig3 test results\" data-elementor-lightbox-description=\"Fig. 3 Test Results\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTU2NjEsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL3RocmVlLXBvaW50LWJlbmRpbmctZmxleHVyYWwtdGVzdC1mb3ItcGxhc3RpY3MtZmlnMy10ZXN0LXJlc3VsdHMuanBnIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"756\" height=\"568\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-fig3-test-results.jpg\" class=\"attachment-medium_large size-medium_large wp-image-15661\" alt=\"Obr. 3 V\u00fdsledky testu\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Obr. 3 V\u00fdsledky testu<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-21447e8 elementor-widget elementor-widget-image\" data-id=\"21447e8\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-fig4-flexural-stress-flexural-strain-curve-of-gfrp-flexural-strain-0-percent-to-3-percent.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"three-point-bending-flexural-test-for-plastics-fig4-flexural-stress-flexural-strain-curve-of-gfrp-flexural-strain-0-percent-to-3-percent\" data-elementor-lightbox-description=\"Fig. 4 Flexural Stress\/Flexural Strain Curve of GFRP(Flexural Strain 0 % to 3 %)\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTU2NjIsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL3RocmVlLXBvaW50LWJlbmRpbmctZmxleHVyYWwtdGVzdC1mb3ItcGxhc3RpY3MtZmlnNC1mbGV4dXJhbC1zdHJlc3MtZmxleHVyYWwtc3RyYWluLWN1cnZlLW9mLWdmcnAtZmxleHVyYWwtc3RyYWluLTAtcGVyY2VudC10by0zLXBlcmNlbnQuanBnIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"581\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-fig4-flexural-stress-flexural-strain-curve-of-gfrp-flexural-strain-0-percent-to-3-percent-768x581.jpg\" class=\"attachment-medium_large size-medium_large wp-image-15662\" alt=\"Obr. 4 Krivka ohybov\u00e9ho nap\u00e4tia\/ohybovej deform\u00e1cie GFRP (ohybov\u00e1 deform\u00e1cia 0 % a\u017e 3 %)\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Obr. 4 Krivka ohybov\u00e9ho nap\u00e4tia\/ohybovej deform\u00e1cie GFRP\n(ohybov\u00e1 deform\u00e1cia 0 % a\u017e 3 %)<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-29f2526 e-grid e-con-full e-con e-child\" data-id=\"29f2526\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6c65de4 elementor-widget elementor-widget-image\" data-id=\"6c65de4\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-Table-4-Test-Results.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"three-point-bending-flexural-test-for-plastics-Table 4 Test Results\" data-elementor-lightbox-description=\"Table 4 Test Results\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTU2NjMsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL3RocmVlLXBvaW50LWJlbmRpbmctZmxleHVyYWwtdGVzdC1mb3ItcGxhc3RpY3MtVGFibGUtNC1UZXN0LVJlc3VsdHMuanBnIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"208\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-Table-4-Test-Results-768x208.jpg\" class=\"attachment-medium_large size-medium_large wp-image-15663\" alt=\"Tabu\u013eka 4 V\u00fdsledky testov\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Tabu\u013eka 4 V\u00fdsledky testov<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d1efbbb elementor-widget elementor-widget-image\" data-id=\"d1efbbb\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-table-5-comparison-of-flexural-modulus-of-elasticity-results-by-measurement-method-deflection-gpa.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"three-point-bending-flexural-test-for-plastics-table-5-comparison-of-flexural-modulus-of-elasticity-results-by-measurement-method-deflection-gpa\" data-elementor-lightbox-description=\"Table 5 Comparison of Flexural Modulus of Elasticity Resultsby Measurement Method Deflection [GPa]\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTU2NjcsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL3RocmVlLXBvaW50LWJlbmRpbmctZmxleHVyYWwtdGVzdC1mb3ItcGxhc3RpY3MtdGFibGUtNS1jb21wYXJpc29uLW9mLWZsZXh1cmFsLW1vZHVsdXMtb2YtZWxhc3RpY2l0eS1yZXN1bHRzLWJ5LW1lYXN1cmVtZW50LW1ldGhvZC1kZWZsZWN0aW9uLWdwYS5qcGcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"165\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-table-5-comparison-of-flexural-modulus-of-elasticity-results-by-measurement-method-deflection-gpa-768x165.jpg\" class=\"attachment-medium_large size-medium_large wp-image-15667\" alt=\"Tabu\u013eka 5 Porovnanie v\u00fdsledkov modulu pru\u017enosti v ohybe pod\u013ea met\u00f3dy merania Priehyb [GPa]\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Tabu\u013eka 5 Porovnanie v\u00fdsledkov modulu pru\u017enosti v ohybe\npod\u013ea met\u00f3dy merania Priehyb [GPa]<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b837ff elementor-widget elementor-widget-text-editor\" data-id=\"8b837ff\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tNa obr. 4 s\u00fa porovnan\u00e9 ohybov\u00e9 deform\u00e1cie, ktor\u00e9 s\u00fa vypo\u010d\u00edtan\u00e9\nz posunutia prie\u010dnej hlavy a poddajnosti\nkorekcie a syst\u00e9mu na meranie priehybov na\npo\u010diato\u010dnom obdob\u00ed sk\u00fa\u0161ky GFRP. Modr\u00e1 \u010diara zn\u00e1zor\u0148uje\nmeranie posunutia prie\u010dnej hlavy, \u010derven\u00e1 \u010diara\nzn\u00e1zor\u0148uje posun s korekciou zhody a \u010dierna \u010diara\nzn\u00e1zor\u0148uje syst\u00e9m merania priehybu. .\nukazuje, \u017ee v po\u010diato\u010dnej peri\u00f3de s\u00fa rozdiely\nsk\u00fa\u0161ky.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1768880 elementor-widget elementor-widget-text-editor\" data-id=\"1768880\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Zhrnutie<\/h2>\n\nPlasty boli vystaven\u00e9 trojbodov\u00e9mu ohybu v ohybe\nmet\u00f3dou, ktor\u00e1 je v s\u00falade s novelizovan\u00fdmi normami\n(ISO178:2010, Amd.1:2013 a JIS K 7171:2016). V\u00fdsledky\nuk\u00e1zali, \u017ee \u010d\u00edm vy\u0161\u0161\u00ed je modul pru\u017enosti v ohybe\nmateri\u00e1lu v porad\u00ed merania s kr\u00ed\u017eovou hlavou\nposunutie, korekcia zhody, meranie priehybu\nsyst\u00e9m. Okrem toho v\u00fdsledky uk\u00e1zali, \u017ee tento\nrozdiel je v\u00e4\u010d\u0161\u00ed v pr\u00edpade vzoriek s vy\u0161\u0161ou\nmodulom pru\u017enosti v ohybe. Presn\u00e9 meranie\nposunutia pomocou syst\u00e9mu na meranie priehybu je\npotrebn\u00e9 na spr\u00e1vne vyhodnotenie materi\u00e1lov v s\u00falade\nv s\u00falade so zmenen\u00fdmi a doplnen\u00fdmi normami.\nZostava zariadenia pou\u017eit\u00e1 v tomto \u010dl\u00e1nku sa m\u00f4\u017ee pou\u017ei\u0165\nna vykon\u00e1vanie trojbodov\u00fdch ohybov\u00fdch sk\u00fa\u0161ok plastov v\nv s\u00falade so zmenen\u00fdmi a doplnen\u00fdmi normami.\nOdkazy\n*1 Takashi Murakami, Shimadzu Review Vol. 71, issue 3\/4 (2014)\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-49c6ec6 elementor-widget elementor-widget-spacer\" data-id=\"49c6ec6\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-167ca2b e-flex e-con-boxed e-con e-parent\" data-id=\"167ca2b\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2bb8546 elementor-widget elementor-widget-heading\" data-id=\"2bb8546\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Stiahnite si<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-951c335 downloads-liste elementor-widget elementor-widget-text-editor\" data-id=\"951c335\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><div class=\"page\" title=\"Strana 1\"><div class=\"section\"><div class=\"layoutArea\"><div class=\"column\"><p><a href=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics.pdf\">Pou\u017eitie: Sk\u00fa\u0161ka ohybom v troch bodoch pre plasty<\/a><\/p><\/div><\/div><\/div><\/div><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b94085b elementor-widget elementor-widget-spacer\" data-id=\"b94085b\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Based on their thermal properties and light weight, plastics<br \/>\nhave recently come to be used in a variety of applications<br \/>\nand sectors, from small gears to airplane fuselages.<\/p>","protected":false},"author":5,"featured_media":15660,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[347,336],"tags":[],"class_list":["post-15616","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ags-x","category-bending-testing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Three-Point Bending Test for Plastics | ISO 178 Standard<\/title>\n<meta name=\"description\" content=\"Discover Shimadzu&#039;s three-point bending test for plastics, ensuring compliance with ISO 178 and JIS K 7171 standards for accurate flexural strength measurement.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/shimadzu-testing.com\/sk\/vediet-ako\/bending-testing\/three-point-bending-flexural-test-for-plastics\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Three-Point Bending Test for Plastics | ISO 178 Standard\" \/>\n<meta name=\"twitter:description\" content=\"Discover Shimadzu&#039;s three-point bending test for plastics, ensuring compliance with ISO 178 and JIS K 7171 standards for accurate flexural strength measurement.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/three-point-bending-flexural-test-for-plastics-fig2-attachment-of-deflection-measuring-system-to-testing-machine.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Autor\" \/>\n\t<meta name=\"twitter:data1\" content=\"Theresa\" \/>\n\t<meta name=\"twitter:label2\" content=\"Predpokladan\u00fd \u010das 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