{"product_id":"gbt46838-2025","title":"GB\/T 46838-2025 English PDF (GB\/T46838-2025)","description":"\u003ch1\u003eGB\/T 46838-2025: Plastics - Determination of fracture toughness(GIC and KIC) at moderately high loading rates(1m\/s)\u003c\/h1\u003e\u003cb style=\"font-size:16px;\"\u003eDelivery:\u003c\/b\u003e 9 seconds. Download (and Email) true-PDF + Invoice.\u003cbr\u003e\u003cb style=\"font-size:16px;\"\u003eGet Quotation:\u003c\/b\u003e Click \u003ca style=\"color: blue;\" href=\"https:\/\/www.chinesestandard.net\/Cart\/Cart.aspx?GB\/T%2046838-2025_English\" rel=\"nofollow\"\u003eGB\/T 46838-2025\u003c\/a\u003e (Self-service in 1-minute)\u003cbr\u003e\u003cb style=\"font-size:16px;\"\u003eNewer \/ historical versions: \u003c\/b\u003e \u003ca style=\"color: blue;\" href=\"https:\/\/www.chinesestandard.net\/PDF.aspx\/GBT46838-2025\"\u003eGB\/T 46838-2025\u003c\/a\u003e\u003ch2\u003ePreview True-PDF\u003c\/h2\u003e\u003ciframe src=\"https:\/\/www.chinesestandard.net\/Preview_PDF.aspx\/GBT46838-2025\" width=\"445\" height=\"600\" title=\"GB\/T 46838-2025 True-PDF\"\u003e\u003c\/iframe\u003e \u003cbr\u003e\u003ch2\u003eScope\u003c\/h2\u003eThis Document specifies and provides principles and guidelines for determining the fracture \u003cbr\u003etoughness of plastics in the crack-opening mode (Mode I) using the linear-elastic fracture \u003cbr\u003emechanics (LEFM) method at loading displacement rates up to 1 m\/s. \u003cbr\u003eThis Document applies to materials within the same scope as GB\/T 41932-2022, namely: \u003cbr\u003e--- rigid and semi-rigid thermoplastic molding, extrusion, and casting materials; \u003cbr\u003e--- rigid and semi-rigid thermosetting molding and casting materials; \u003cbr\u003eas well as composite materials containing short fibers with lengths of 7.5 mm or less. \u003cbr\u003eNOTE 1: It is generally considered that short fibers with lengths between 0.1 mm and 7.5 mm cause \u003cbr\u003einhomogeneity and anisotropy in the crack-tip zone during the fracture process. Therefore, similar to \u003cbr\u003eAppendix B of GB\/T 41932-2022, Appendix A extends the applicability of the same test procedures, \u003cbr\u003eunder specified conditions, to testing of rigid and semi-rigid thermoplastic or thermosetting plastics \u003cbr\u003econtaining such short fibers. \u003cbr\u003eNOTE 2: Although dynamic effects occurring at high loading rates depend largely on the material being \u003cbr\u003etested as well as the used testing equipment and specimen geometry, the test methods and data processing \u003cbr\u003eprocedures provided in this Document remain valid and are independent of the specific testing equipment, \u003cbr\u003especimen dimensions, or material type. \u003cbr\u003e\u003cbr\u003e\u003ch2\u003eBasic Data\u003c\/h2\u003e\u003ctable id=\"TableTabAbout0\" rules=\"all\" border=\"1\" style=\"font-family:Arial;font-size:Small;\"\u003e  \u003ctr id=\"TableTabRow10\"\u003e     \u003ctd id=\"TableTabCell110\" align=\"center\" font=\"bold\"\u003e \u003cb\u003eStandard ID\u003c\/b\u003e \u003c\/td\u003e    \u003ctd id=\"TableTabCell120\" align=\"center\"\u003e GB\/T 46838-2025 (GB\/T46838-2025)\u003c\/td\u003e  \u003c\/tr\u003e\n\u003ctr id=\"TableTabRow20\"\u003e     \u003ctd id=\"TableTabCell210\" align=\"center\" font=\"bold\"\u003e \u003cb\u003eDescription (Translated English)\u003c\/b\u003e \u003c\/td\u003e    \u003ctd id=\"TableTabCell220\" align=\"center\"\u003e Plastics - Determination of fracture toughness(GIC and KIC) at moderately high loading rates(1m\/s)\u003c\/td\u003e  \u003c\/tr\u003e\n\u003ctr id=\"TableTabRow30\"\u003e     \u003ctd id=\"TableTabCell310\" align=\"center\" font=\"bold\"\u003e \u003cb\u003eSector \/ Industry\u003c\/b\u003e \u003c\/td\u003e    \u003ctd id=\"TableTabCell320\" align=\"center\"\u003e National Standard (Recommended)\u003c\/td\u003e  \u003c\/tr\u003e\n\u003ctr id=\"TableTabRow40\"\u003e     \u003ctd id=\"TableTabCell410\" align=\"center\" font=\"bold\"\u003e \u003cb\u003eClassification of Chinese Standard\u003c\/b\u003e \u003c\/td\u003e    \u003ctd id=\"TableTabCell420\" align=\"center\"\u003e G31\u003c\/td\u003e  \u003c\/tr\u003e\n\u003ctr id=\"TableTabRow50\"\u003e     \u003ctd id=\"TableTabCell510\" align=\"center\" font=\"bold\"\u003e \u003cb\u003eClassification of International Standard\u003c\/b\u003e \u003c\/td\u003e    \u003ctd id=\"TableTabCell520\" align=\"center\"\u003e 83.080.01\u003c\/td\u003e  \u003c\/tr\u003e\n\u003ctr id=\"TableTabRow60\"\u003e     \u003ctd id=\"TableTabCell610\" align=\"center\" font=\"bold\"\u003e \u003cb\u003eWord Count Estimation\u003c\/b\u003e \u003c\/td\u003e    \u003ctd id=\"TableTabCell620\" align=\"center\"\u003e 34,399\u003c\/td\u003e  \u003c\/tr\u003e\n\u003ctr id=\"TableTabRow70\"\u003e     \u003ctd id=\"TableTabCell710\" align=\"center\" font=\"bold\"\u003e \u003cb\u003eDate of Issue\u003c\/b\u003e \u003c\/td\u003e    \u003ctd id=\"TableTabCell720\" align=\"center\"\u003e 2025-12-02\u003c\/td\u003e  \u003c\/tr\u003e\n\u003ctr id=\"TableTabRow80\"\u003e     \u003ctd id=\"TableTabCell810\" align=\"center\" font=\"bold\"\u003e \u003cb\u003eDate of Implementation\u003c\/b\u003e \u003c\/td\u003e    \u003ctd id=\"TableTabCell820\" align=\"center\"\u003e 2026-07-01\u003c\/td\u003e  \u003c\/tr\u003e\n\u003ctr id=\"TableTabRow90\"\u003e     \u003ctd id=\"TableTabCell910\" align=\"center\" font=\"bold\"\u003e \u003cb\u003eIssuing agency(ies)\u003c\/b\u003e \u003c\/td\u003e    \u003ctd id=\"TableTabCell920\" align=\"center\"\u003e State Administration for Market Regulation, Standardization Administration of China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cbr\u003e\u003cbr\u003e","brand":"www.ChineseStandard.us -- Field Test Asia Pte. Ltd.","offers":[{"title":"Default Title","offer_id":67783168983354,"sku":null,"price":505.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/5737\/1706\/files\/GBT46838-2025EN.1.jpg?v=1792246744","url":"https:\/\/www.chinesestandard.us\/products\/gbt46838-2025","provider":"www.ChineseStandard.us (www.ChineseStandard.net)","version":"1.0","type":"link"}