{"id":16374,"date":"2024-09-19T10:03:47","date_gmt":"2024-09-19T08:03:47","guid":{"rendered":"https:\/\/dev.shimadzu-testing.com\/?p=16374"},"modified":"2025-02-05T11:19:15","modified_gmt":"2025-02-05T10:19:15","slug":"observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests","status":"publish","type":"post","link":"https:\/\/shimadzu-testing.com\/cz\/know-how\/high-speed-video-camera\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests\/","title":{"rendered":"Pozorov\u00e1n\u00ed poru\u0161en\u00ed vzork\u016f CFRP s otev\u0159en\u00fdmi otvory p\u0159i tahov\u00fdch zkou\u0161k\u00e1ch"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"16374\" class=\"elementor elementor-16374\" 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>\nPlast vyztu\u017een\u00fd uhl\u00edkov\u00fdmi vl\u00e1kny (CFRP), kter\u00fd m\u00e1 vy\u0161\u0161\u00ed m\u011brnou pevnost i ve srovn\u00e1n\u00ed s jin\u00fdmi kompozitn\u00edmi materi\u00e1ly, se pou\u017e\u00edv\u00e1 v letadlech a n\u011bkter\u00fdch dopravn\u00edch prost\u0159edc\u00edch za \u00fa\u010delem \u00faspory paliva d\u00edky sn\u00ed\u017een\u00ed hmotnosti. Kompozitn\u00ed materi\u00e1ly maj\u00ed vynikaj\u00edc\u00ed mechanick\u00e9 vlastnosti. Obecnou vlastnost\u00ed kompozitn\u00edch materi\u00e1l\u016f v\u0161ak je, \u017ee jejich pevnost v\u00fdrazn\u011b kles\u00e1, kdy\u017e jsou vroubkovan\u00e9. CFRP nen\u00ed v\u00fdjimkou, a proto jsou d\u016fle\u017eit\u00e9 zkou\u0161ky vzork\u016f s vrubem. V tomto p\u0159\u00edpad\u011b se zkou\u0161ky prov\u00e1d\u011bj\u00ed pomoc\u00ed vzork\u016f s vrubem s kruhov\u00fdm otvorem uprost\u0159ed. V tomto experimentu byly provedeny tahov\u00e9 zkou\u0161ky na vzorc\u00edch CFRP (lamin\u00e1tov\u00e1 metoda [45\/0\/-45\/90]2s) o celkov\u00e9 d\u00e9lce 150 mm, \u0161\u00ed\u0159ce 36 mm a tlou\u0161\u0165ce 30 mm.\n2,5 mm, p\u0159ipraven\u00fdch s kruhov\u00fdm otvorem o pr\u016fm\u011bru 6 mm uprost\u0159ed. B\u011bhem tahov\u00fdch zkou\u0161ek byl pozorov\u00e1n proces poru\u0161en\u00ed vzork\u016f CFRP. Pro v\u00fdvoj CFRP je d\u016fle\u017eit\u00e9 zejm\u00e9na potvrzen\u00ed procesu poru\u0161en\u00ed slab\u00fdch oblast\u00ed, jako je obvod kruhov\u00fdch otvor\u016f, a potvrzen\u00ed platnosti anal\u00fdzy CAE. Jeliko\u017e je v\u0161ak selh\u00e1n\u00ed CFRP k\u0159ehk\u00fdm jevem, p\u0159i kter\u00e9m doch\u00e1z\u00ed k selh\u00e1n\u00ed okam\u017eit\u011b, nelze jej potvrdit pouh\u00fdm okem. Z tohoto d\u016fvodu se k pozorov\u00e1n\u00ed poruchy pou\u017e\u00edvaj\u00ed vysokorychlostn\u00ed videokamery. V tomto experimentu byly pomoc\u00ed dvou vysokorychlostn\u00edch videokamer HPV-X2 z\u00edsk\u00e1ny synchronizovan\u00e9 sn\u00edmky na p\u0159edn\u00ed a bo\u010dn\u00ed stran\u011b vzork\u016f.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2daabf1 e-grid e-con-full e-con e-child\" data-id=\"2daabf1\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-25dc8b7 elementor-widget elementor-widget-text-editor\" data-id=\"25dc8b7\" 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 m\u011b\u0159en\u00ed<\/strong><\/h2>\nV tomto experimentu se p\u0159esn\u00fd univerz\u00e1ln\u00ed p\u0159\u00edstroj AG-Xplus\na dva vysokorychlostn\u00ed videokamery HPV-X2.\nbyly pou\u017eity dv\u011b videokamery. V tabulce 1 jsou uvedeny p\u0159\u00edstroje\npou\u017eit\u00e9 p\u0159\u00edstroje. Pro pozorov\u00e1n\u00ed poru\u0161en\u00ed vzorku p\u0159i zkou\u0161ce tahem se pou\u017eil p\u0159\u00edstroj.\nmus\u00ed b\u00fdt spou\u0161t\u011bc\u00ed sign\u00e1l synchronizovan\u00fd s poruchou\ndo vysokorychlostn\u00edch videokamer. Na adrese\nPoru\u0161en\u00ed za\u010d\u00edn\u00e1 na obvodu kruhov\u00e9ho otvoru.\nProto byla na obvod p\u0159ipevn\u011bna hlin\u00edkov\u00e1 f\u00f3lie.\npomoc\u00ed lepidla, jak je zn\u00e1zorn\u011bno na obr. 1,\ntak, aby se veden\u00ed ztratilo, kdy\u017e vzorek\ndo\u0161lo k poru\u0161e. Porucha byla pozorov\u00e1na pomoc\u00ed tohoto na\u010dasov\u00e1n\u00ed\nspu\u0161t\u011bn\u00ed kamer.\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-cbf94ad elementor-widget elementor-widget-image\" data-id=\"cbf94ad\" 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\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-table-1-testing-equipment.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-table-1-testing-equipment\" data-elementor-lightbox-description=\"Table 1 Testing Equipment\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTYzNDgsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL29ic2VydmluZy10aGUtZmFpbHVyZS1vZi1vcGVuLWhvbGUtY2ZycC1zcGVjaW1lbnMtaW4tdGVuc2lsZS10ZXN0cy10YWJsZS0xLXRlc3RpbmctZXF1aXBtZW50LmpwZyJ9\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"283\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-table-1-testing-equipment-768x283.jpg\" class=\"attachment-medium_large size-medium_large wp-image-16348\" alt=\"Tabulka 1 Zku\u0161ebn\u00ed za\u0159\u00edzen\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\">Tabulka 1 Zku\u0161ebn\u00ed za\u0159\u00edzen\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-50178eb e-grid e-con-full e-con e-child\" data-id=\"50178eb\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1b1f24f elementor-widget elementor-widget-text-editor\" data-id=\"1b1f24f\" 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>V\u00fdsledky m\u011b\u0159en\u00ed<\/h2>\nTabulka 2 uv\u00e1d\u00ed podm\u00ednky m\u011b\u0159en\u00ed a obr. 2\nukazuje zku\u0161ebn\u00ed konfiguraci. Jak je zn\u00e1zorn\u011bno na obr. 2.\nbylo selh\u00e1n\u00ed vzorku zaznamen\u00e1no zep\u0159edu pomoc\u00ed\nkamerou (1) a z boku kamerou (2). Obr. 3\nzobrazuje v\u00fdsledky zkou\u0161ky z p\u0159\u00edstroje AG-Xplus. Poru\u0161en\u00ed za\u010d\u00edn\u00e1\nkde na obr. 3 n\u00e1hle kles\u00e1 zku\u0161ebn\u00ed s\u00edla. Obr. 4\nukazuje selh\u00e1n\u00ed vzorku pozorovan\u00e9 zep\u0159edu,\na na obr. 5 z boku. Obr\u00e1zek (2) na obr. 4 ukazuje, \u017ee\nporucha za\u010d\u00edn\u00e1 na lev\u00e9 stran\u011b kruhov\u00e9ho otvoru. Na str\u00e1nce\n(3) se trhlina objevuje tak\u00e9 na prav\u00e9 stran\u011b otvoru.\nkruhov\u00e9ho otvoru. N\u00e1sledn\u011b trhliny postupuj\u00ed ve sm\u011bru\norientaci 45 stup\u0148\u016f, co\u017e je orientace vl\u00e1ken.\nve vn\u011bj\u0161\u00ed vrstv\u011b. D\u00e1le s postupem zkou\u0161ky,\nbyly potvrzeny v\u00edcen\u00e1sobn\u00e9 trhliny, jak je vid\u011bt na obr\u00e1zc\u00edch (7) a (8).\n(8). P\u0159i pozorov\u00e1n\u00ed z boku nedo\u0161lo k \u017e\u00e1dn\u00e9mu selh\u00e1n\u00ed.\npotvrzena v okam\u017eiku, kdy porucha za\u010dala, a byla pouze\nzpo\u010d\u00e1tku potvrzena pouze na sn\u00edmku (5). To je pravd\u011bpodobn\u011b zp\u016fsobeno t\u00edm, \u017ee\ntrhliny za\u010daly na okraji kruhov\u00e9ho otvoru.\ndos\u00e1hly na sn\u00edmku (5) bo\u010dn\u00ed strany vzorku.\nN\u00e1sledn\u011b bylo potvrzeno selh\u00e1n\u00ed ve v\u00edce vrstv\u00e1ch,\ns v\u00fdjimkou vrstvy 0 stup\u0148\u016f na sn\u00edmku (6). D\u00e1le v\nna sn\u00edmku (7) bylo potvrzeno selh\u00e1n\u00ed ve vrstv\u011b 0 stup\u0148\u016f,\npot\u00e9 se porucha roz\u0161\u00ed\u0159ila sm\u011brem k vrstv\u011b\nvn\u011bj\u0161\u00edho povrchu. Kone\u010dn\u00fd stav vzorku je\nna obr\u00e1zc\u00edch 6 a 7.\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-24916f1 elementor-widget elementor-widget-image\" data-id=\"24916f1\" 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\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-table-2-measurement-conditions.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-table-2-measurement-conditions\" data-elementor-lightbox-description=\"Table 2 Measurement Conditions\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTYzNDksInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL29ic2VydmluZy10aGUtZmFpbHVyZS1vZi1vcGVuLWhvbGUtY2ZycC1zcGVjaW1lbnMtaW4tdGVuc2lsZS10ZXN0cy10YWJsZS0yLW1lYXN1cmVtZW50LWNvbmRpdGlvbnMuanBnIn0%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"768\" height=\"130\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-table-2-measurement-conditions-768x130.jpg\" class=\"attachment-medium_large size-medium_large wp-image-16349\" alt=\"Tabulka 2 Podm\u00ednky m\u011b\u0159en\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\">Tabulka 2 Podm\u00ednky m\u011b\u0159en\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-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\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig2-test-configuration.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig2-test-configuration\" data-elementor-lightbox-description=\"Fig. 2 Test Configuration\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTYzOTMsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL29ic2VydmluZy10aGUtZmFpbHVyZS1vZi1vcGVuLWhvbGUtY2ZycC1zcGVjaW1lbnMtaW4tdGVuc2lsZS10ZXN0cy1maWcyLXRlc3QtY29uZmlndXJhdGlvbi5qcGcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"608\" height=\"396\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig2-test-configuration.jpg\" class=\"attachment-medium_large size-medium_large wp-image-16393\" alt=\"Obr. 2 Konfigurace 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. 2 Konfigurace 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\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig3-test-results.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig3-test-results\" data-elementor-lightbox-description=\"Fig. 3 Test Results\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTYzNDMsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL29ic2VydmluZy10aGUtZmFpbHVyZS1vZi1vcGVuLWhvbGUtY2ZycC1zcGVjaW1lbnMtaW4tdGVuc2lsZS10ZXN0cy1maWczLXRlc3QtcmVzdWx0cy5qcGcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"542\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig3-test-results-768x542.jpg\" class=\"attachment-medium_large size-medium_large wp-image-16343\" alt=\"Obr. 3 V\u00fdsledky test\u016f\" \/>\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 test\u016f<\/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-1f9f726 elementor-widget elementor-widget-image\" data-id=\"1f9f726\" 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\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig4-images-from-camera-1-5-\u03bcs-between-images.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig4-images-from-camera-1-5-\u03bcs-between-images\" data-elementor-lightbox-description=\"Fig. 4 Images from Camera (1) (5 \u03bcs between images)\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTYzNDQsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL29ic2VydmluZy10aGUtZmFpbHVyZS1vZi1vcGVuLWhvbGUtY2ZycC1zcGVjaW1lbnMtaW4tdGVuc2lsZS10ZXN0cy1maWc0LWltYWdlcy1mcm9tLWNhbWVyYS0xLTUtXHUwM2Jjcy1iZXR3ZWVuLWltYWdlcy5qcGcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"868\" height=\"1024\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig4-images-from-camera-1-5-\u03bcs-between-images-868x1024.jpg\" class=\"attachment-large size-large wp-image-16344\" alt=\"Obr. 4 Sn\u00edmky z kamery (1) (5 \u03bcs mezi sn\u00edmky)\" \/>\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 Sn\u00edmky z kamery (1) (5 \u03bcs mezi sn\u00edmky)<\/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-3ff7fd1 elementor-widget elementor-widget-image\" data-id=\"3ff7fd1\" 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\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig5-image-from-camera-2-5-\u03bcs-between-images.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig5-image-from-camera-2-5-\u03bcs-between-images\" data-elementor-lightbox-description=\"Fig. 5 Images from Camera (2) (5 \u03bcs between images)\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTYzNDUsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL29ic2VydmluZy10aGUtZmFpbHVyZS1vZi1vcGVuLWhvbGUtY2ZycC1zcGVjaW1lbnMtaW4tdGVuc2lsZS10ZXN0cy1maWc1LWltYWdlLWZyb20tY2FtZXJhLTItNS1cdTAzYmNzLWJldHdlZW4taW1hZ2VzLmpwZyJ9\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"861\" height=\"1024\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig5-image-from-camera-2-5-\u03bcs-between-images-861x1024.jpg\" class=\"attachment-large size-large wp-image-16345\" alt=\"Obr. 5 Sn\u00edmky z kamery (2) (5 \u03bcs mezi sn\u00edmky)\" \/>\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. 5 Sn\u00edmky z kamery (2) (5 \u03bcs mezi sn\u00edmky)<\/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<div class=\"elementor-element elementor-element-d5201b7 e-grid e-con-full e-con e-child\" data-id=\"d5201b7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3114da3 elementor-widget elementor-widget-image\" data-id=\"3114da3\" 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\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig6-specimen-after-failure-front.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig6-specimen-after-failure-front\" data-elementor-lightbox-description=\"Fig. 6 Specimen After Failure (front)\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTYzNDYsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL29ic2VydmluZy10aGUtZmFpbHVyZS1vZi1vcGVuLWhvbGUtY2ZycC1zcGVjaW1lbnMtaW4tdGVuc2lsZS10ZXN0cy1maWc2LXNwZWNpbWVuLWFmdGVyLWZhaWx1cmUtZnJvbnQuanBnIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"432\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig6-specimen-after-failure-front-768x432.jpg\" class=\"attachment-medium_large size-medium_large wp-image-16346\" alt=\"Obr. 6 Vzorek po poru\u0161e (zep\u0159edu)\" \/>\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. 6 Vzorek po poru\u0161e (zep\u0159edu)<\/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-1b8aad9 elementor-widget elementor-widget-image\" data-id=\"1b8aad9\" 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\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig7-specimen-after-failure-side.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig7-specimen-after-failure-side\" data-elementor-lightbox-description=\"Fig. 7 Specimen After Failure (side)\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTYzNDcsInVybCI6Imh0dHBzOlwvXC9zaGltYWR6dS10ZXN0aW5nLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL29ic2VydmluZy10aGUtZmFpbHVyZS1vZi1vcGVuLWhvbGUtY2ZycC1zcGVjaW1lbnMtaW4tdGVuc2lsZS10ZXN0cy1maWc3LXNwZWNpbWVuLWFmdGVyLWZhaWx1cmUtc2lkZS5qcGcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"431\" src=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests-fig7-specimen-after-failure-side-768x431.jpg\" class=\"attachment-medium_large size-medium_large wp-image-16347\" alt=\"Obr. 7 Vzorek po selh\u00e1n\u00ed (strana)\" \/>\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. 7 Vzorek po selh\u00e1n\u00ed (strana)<\/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-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>Z\u00e1v\u011br<\/h2>\nCinven\u010dn\u00ed d\u00e1vka HPV-X nem\u00e1 synchroniza\u010dn\u00ed funkci, a proto nen\u00ed schopna.\nnahr\u00e1vat ze dvou sm\u011br\u016f. Rovn\u011b\u017e citlivost\nHPV-X je nedostate\u010dn\u00e1, tak\u017ee nem\u016f\u017ee zaznamen\u00e1vat p\u0159i zobrazov\u00e1n\u00ed\nrychlost\u00ed 500 000 sn\u00edmk\u016f za sekundu nebo vy\u0161\u0161\u00ed. HPV-X2 je\nvybaven funkc\u00ed synchronizace a funkcemi\nzv\u00fd\u0161enou citlivost\u00ed, tak\u017ee tento p\u0159\u00edstroj je schopen\nsynchronizovan\u00e9 z\u00e1znamy rychlost\u00ed 2 miliony sn\u00edmk\u016f za sekundu, jako v tomto p\u0159\u00edpad\u011b. Jako\nv\u00fdsledkem je, \u017ee p\u0159i tahov\u00fdch zkou\u0161k\u00e1ch lze pozorovat selh\u00e1n\u00ed\nmateri\u00e1l\u016f, jako je CFRP, kter\u00e9 selh\u00e1vaj\u00ed p\u0159i vysok\u00fdch rychlostech.\nObecn\u011b se pozorov\u00e1n\u00ed poruch \u010dasto zaznamen\u00e1vaj\u00ed z\nz p\u0159edn\u00ed \u010d\u00e1sti vzorku. P\u0159id\u00e1n\u00edm z\u00e1znamu\nz boku umo\u017e\u0148uje potvrdit proces selh\u00e1n\u00ed\nkter\u00fd nelze pozorovat pouze zep\u0159edu. Na adrese\nzejm\u00e9na u materi\u00e1l\u016f CFRP s r\u016fzn\u00fdmi vl\u00e1kny.\ns r\u016fznou orientac\u00ed jednotliv\u00fdch vrstev laminace, kde je porucha\nprob\u00edh\u00e1 pro ka\u017edou vrstvu jinak, jak je zn\u00e1zorn\u011bno na obr\u00e1zku.\nv tomto \u010dl\u00e1nku, lze proces poru\u0161ov\u00e1n\u00ed pozorovat ve\npodrobn\u011bji pomoc\u00ed z\u00e1znamu ze dvou sm\u011br\u016f.\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-8f5d236 elementor-widget elementor-widget-spacer\" data-id=\"8f5d236\" 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\">St\u00e1hnout<\/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><a href=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/observing-the-failure-of-open-hole-cfrp-specimens-in-tensile-tests.pdf\" target=\"_blank\" rel=\"noopener\">Pou\u017eit\u00ed: Pozorov\u00e1n\u00ed poru\u0161en\u00ed vzork\u016f CFRP s otev\u0159en\u00fdmi otvory p\u0159i tahov\u00fdch zkou\u0161k\u00e1ch<\/a><\/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-7bda869 elementor-widget elementor-widget-spacer\" data-id=\"7bda869\" 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<div class=\"elementor-element elementor-element-a119d2d elementor-hidden-desktop elementor-hidden-tablet elementor-hidden-mobile elementor-widget elementor-widget-button\" data-id=\"a119d2d\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/shimadzu-testing.com\/wp-content\/uploads\/2024\/09\/tensile-test-of-plastics-with-automatic-extensometer.pdf\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Zkou\u0161ka plast\u016f v tahu pomoc\u00ed extenzometru (PDF)<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\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>Offering superior specific strength, even compared to<br \/>\nother composite materials, carbon fiber reinforced plastic (CFRP) is used in aircraft and some transport vehicles for&#8230;<\/p>","protected":false},"author":5,"featured_media":16342,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[340,357],"tags":[],"class_list":["post-16374","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-high-speed-video-camera","category-hpv-x2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Observing Open-Hole CFRP Failure in Tensile Tests | Shimadzu HPV-X2<\/title>\n<meta name=\"description\" content=\"Explore how Shimadzu&#039;s HPV-X2 high-speed video camera captures the failure behavior of open-hole CFRP specimens during tensile tests for detailed analysis.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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