{"id":8506,"date":"2026-04-20T13:44:19","date_gmt":"2026-04-20T05:44:19","guid":{"rendered":"http:\/\/www.camcjsw-testmachines.com\/?p=8506"},"modified":"2026-04-20T14:12:59","modified_gmt":"2026-04-20T06:12:59","slug":"industry-standard-composites-astm-d7264","status":"publish","type":"post","link":"http:\/\/www.camcjsw-testmachines.com\/ru\/industry-standard-composites-astm-d7264\/","title":{"rendered":"Industry Standard \u2013 Composites\u00a0&#8211; ASTM D7264"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"8506\" class=\"elementor elementor-8506\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-34d9b38 e-flex e-con-boxed e-con e-parent\" data-id=\"34d9b38\" 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-87883a5 elementor-widget elementor-widget-text-editor\" data-id=\"87883a5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 26-06-2024 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p>This test method determines the flexural stiffness and\u00a0strength properties of polymer matrix composites.<\/p><p>Bending tests are used to determine important mechanical properties. In the test, the lower half of the laminate is subjected to tensile loads, and the upper half to compressive loads. The load is zero in the mid-plane of the laminate. Furthermore, in-plane shear is generated during bending tests; therefore, the ratio of the specimen span to its thickness should be as large as possible to minimize the impact of shear stress.<\/p><p>For multidirectional laminates, bending tests can detect layup errors, which is very helpful for production quality control and incoming material inspection.<\/p>\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-b97a265 e-flex e-con-boxed e-con e-parent\" data-id=\"b97a265\" 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-683f68a elementor-widget elementor-widget-heading\" data-id=\"683f68a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 26-06-2024 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h3 class=\"elementor-heading-title elementor-size-default\">Three-Point Bending Test<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e842b74 elementor-widget elementor-widget-text-editor\" data-id=\"e842b74\" 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<p>The three-point bending test for composite materials is very common and easy to perform.<\/p><p>The flexural modulus is determined at 10% to 50% of the maximum test force (EN 2562), or 10% to 25% of the maximum test force (EN 2746), or between the two stress limits (ISO and ASTM standards).<\/p><p>ASTM standards specify a span-to-thickness ratio of 32:1.<\/p><p>ISO standards specify 20:1 for GFRP and 40:1 for CFRP;<\/p><p>EN standards specify 16:1 for GFRP and 40:1 for CFRP.<\/p><p>This ensures the specimen withstands the lowest possible shear load.<\/p>\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-2b179a3 e-flex e-con-boxed e-con e-parent\" data-id=\"2b179a3\" 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-0c6c19d elementor-widget elementor-widget-heading\" data-id=\"0c6c19d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Four-Point Bending Test<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0583b8a elementor-widget elementor-widget-text-editor\" data-id=\"0583b8a\" 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<p>The advantage of the 4-point bending test for composite materials lies in the shear-free region between the two indentation points.<\/p><p>The flexural modulus is measured using 0.05% to 0.25% strain (ISO 14125) or 0.1% to 0.3% strain (ASTM D7264).<\/p><p>The central support span can be 1\/3 (ISO 14125) or 1\/2 (ASTM D7264) of the lower support span. The span to thickness ratio is 32:1 in ASTM. ISO uses 22.5:1 for GFRP and 40.5:1 for CFRP.<\/p><p>The standard requires deflection to be measured directly at the midpoint of the supports.<img decoding=\"async\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/04\/98fd72ca4f3de6c5c6f0264627dea425.webp\" alt=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/04\/98fd72ca4f3de6c5c6f0264627dea425.webp\" \/><\/p>\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>This test method determines the flexural stiffness and\u00a0strength properties of polymer matrix composites. Bending tests are used to determine important mechanical properties. In the test, the lower half of the laminate is subjected to tensile loads, and the upper half to compressive loads. The load is zero in the mid-plane of the laminate. Furthermore, in-plane [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","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":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[41],"tags":[],"class_list":["post-8506","post","type-post","status-publish","format-standard","hentry","category-application"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.5 (Yoast SEO v22.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>Industry Standard \u2013 Composites\u00a0- ASTM D7264 - SinoTest Testing Systems<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"http:\/\/www.camcjsw-testmachines.com\/ru\/industry-standard-composites-astm-d7264\/\" \/>\r\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"Industry Standard \u2013 Composites\u00a0- ASTM D7264\" \/>\r\n<meta property=\"og:description\" content=\"This test method determines the flexural stiffness and\u00a0strength properties of polymer matrix composites. 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