{"id":134,"date":"2025-03-27T08:01:03","date_gmt":"2025-03-27T08:01:03","guid":{"rendered":"https:\/\/www.coefficientfriction.com\/?page_id=134"},"modified":"2025-09-18T09:02:07","modified_gmt":"2025-09-18T09:02:07","slug":"astm-d1894","status":"publish","type":"page","link":"https:\/\/www.coefficientfriction.com\/vi\/astm-d1894","title":{"rendered":"ASTM D1894"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"134\" class=\"elementor elementor-134\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e87c6b2 e-flex e-con-boxed e-con e-parent\" data-id=\"e87c6b2\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-d087c52 e-con-full e-flex e-con e-child\" data-id=\"d087c52\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d9f31fd elementor-invisible elementor-widget elementor-widget-image\" data-id=\"d9f31fd\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;zoomIn&quot;}\" 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\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"200\" src=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/ASTM-D1894-1.webp\" class=\"attachment-large size-large wp-image-77\" alt=\"ASTM D1894\" srcset=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/ASTM-D1894-1.webp 600w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/ASTM-D1894-1-300x100.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\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-60fbb6b e-con-full e-flex e-con e-child\" data-id=\"60fbb6b\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0e3633c elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"0e3633c\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;zoomIn&quot;}\" 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\">Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m h\u1ec7 s\u1ed1 ma s\u00e1t t\u0129nh v\u00e0 \u0111\u1ed9ng c\u1ee7a m\u00e0ng v\u00e0 t\u1ea5m nh\u1ef1a d\u1ebbo<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a73bac6 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"a73bac6\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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<p data-start=\"464\" data-end=\"1024\">Trong th\u1eed nghi\u1ec7m v\u1eadt li\u1ec7u, <em data-start=\"485\" data-end=\"497\">ASTM D1894<\/em> l\u00e0 m\u1ed9t trong nh\u1eefng ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn r\u1ed9ng r\u00e3i nh\u1ea5t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh <strong data-start=\"565\" data-end=\"612\">H\u1ec7 s\u1ed1 ma s\u00e1t t\u0129nh v\u00e0 \u0111\u1ed9ng<\/strong> c\u1ee7a m\u00e0ng v\u00e0 t\u1ea5m nh\u1ef1a. Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n n\u00e0y cung c\u1ea5p d\u1eef li\u1ec7u quan tr\u1ecdng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 c\u00e1c \u0111\u1eb7c t\u00ednh tr\u01b0\u1ee3t, v\u1ed1n \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t bao b\u00ec, hi\u1ec7u qu\u1ea3 gia c\u00f4ng v\u00e0 m\u1ee9c \u0111\u1ed9 h\u00e0i l\u00f2ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 <em data-start=\"836\" data-end=\"856\">Th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D1894<\/em> Nh\u1edd c\u00e1c quy tr\u00ecnh n\u00e0y, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 chuy\u00ean gia ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c lo\u1ea1i m\u00e0ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u v\u1ec1 hi\u1ec7u su\u1ea5t, t\u1eeb \u0111\u00f3 gi\u1ea3m thi\u1ec3u c\u00e1c s\u1ef1 c\u1ed1 s\u1ea3n ph\u1ea9m v\u00e0 n\u00e2ng cao t\u00ednh nh\u1ea5t qu\u00e1n.<\/p>\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\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7d644ae e-flex e-con-boxed e-con e-parent\" data-id=\"7d644ae\" 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-08ee8ec elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"08ee8ec\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">Ti\u00eau chu\u1ea9n ASTM D1894 l\u00e0 g\u00ec?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4bea887 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"4bea887\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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<p data-start=\"1062\" data-end=\"1361\">Ti\u00eau chu\u1ea9n ASTM D1894 quy \u0111\u1ecbnh ph\u01b0\u01a1ng ph\u00e1p \u0111o c\u00e1c t\u00ednh ch\u1ea5t ma s\u00e1t khi m\u1eabu th\u1eed tr\u01b0\u1ee3t tr\u00ean ch\u00ednh n\u00f3 ho\u1eb7c tr\u00ean m\u1ed9t b\u1ec1 m\u1eb7t n\u1ec1n kh\u00e1c. C\u00e1c gi\u00e1 tr\u1ecb thu \u0111\u01b0\u1ee3c \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb d\u01b0\u1edbi d\u1ea1ng <strong data-start=\"1217\" data-end=\"1257\">h\u1ec7 s\u1ed1 ma s\u00e1t t\u0129nh (COF)<\/strong>\u2014l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1eaft \u0111\u1ea7u tr\u01b0\u1ee3t\u2014v\u00e0 <strong data-start=\"1305\" data-end=\"1320\">H\u1ec7 s\u1ed1 ma s\u00e1t \u0111\u1ed9ng h\u1ecdc (COF)<\/strong>\u2014l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec chuy\u1ec3n \u0111\u1ed9ng.<\/p><p data-start=\"1363\" data-end=\"1664\">T\u1ea7m quan tr\u1ecdng c\u1ee7a c\u00e1c th\u00f4ng s\u1ed1 n\u00e0y n\u1eb1m \u1edf m\u1ed1i quan h\u1ec7 tr\u1ef1c ti\u1ebfp c\u1ee7a ch\u00fang v\u1edbi <strong data-start=\"1437\" data-end=\"1509\">vi\u1ec7c x\u1eed l\u00fd phim, hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e1y \u0111\u00f3ng g\u00f3i v\u00e0 t\u00ednh ti\u1ec7n d\u1ee5ng cho ng\u01b0\u1eddi ti\u00eau d\u00f9ng<\/strong>. V\u00ed d\u1ee5, c\u00e1c lo\u1ea1i m\u00e0ng c\u00f3 h\u1ec7 s\u1ed1 ma s\u00e1t (COF) qu\u00e1 cao c\u00f3 th\u1ec3 l\u00e0m k\u1eb9t m\u00e1y \u0111\u00f3ng g\u00f3i, trong khi c\u00e1c lo\u1ea1i m\u00e0ng c\u00f3 h\u1ec7 s\u1ed1 ma s\u00e1t (COF) qu\u00e1 th\u1ea5p c\u00f3 th\u1ec3 tr\u01b0\u1ee3t kh\u00f4ng ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh x\u1ebfp ch\u1ed3ng ho\u1eb7c b\u1ecdc.<\/p>\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<div class=\"elementor-element elementor-element-0364755 e-flex e-con-boxed e-con e-parent\" data-id=\"0364755\" 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-f673fbc elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"f673fbc\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m h\u1ec7 s\u1ed1 ma s\u00e1t<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-156f03e elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"156f03e\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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<p>H\u1ec7 s\u1ed1 ma s\u00e1t (COF) cho bi\u1ebft m\u1ee9c \u0111\u1ed9 d\u1ec5 d\u00e0ng m\u00e0 m\u1ed9t v\u1eadt li\u1ec7u tr\u01b0\u1ee3t tr\u00ean m\u1ed9t v\u1eadt li\u1ec7u kh\u00e1c. Ti\u00eau chu\u1ea9n ASTM D1894 n\u00eau r\u00f5 hai ph\u01b0\u01a1ng ph\u00e1p \u0111o l\u01b0\u1eddng ch\u00ednh:<\/p><ul data-spread=\"false\"><li><p><strong>H\u1ec7 s\u1ed1 ma s\u00e1t t\u0129nh (COF)<\/strong>: L\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng chuy\u1ec3n \u0111\u1ed9ng gi\u1eefa hai b\u1ec1 m\u1eb7t.<\/p><\/li><li><p><strong>H\u1ec7 s\u1ed1 ma s\u00e1t \u0111\u1ed9ng h\u1ecdc (COF)<\/strong>: L\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec chuy\u1ec3n \u0111\u1ed9ng sau khi qu\u00e1 tr\u00ecnh tr\u01b0\u1ee3t b\u1eaft \u0111\u1ea7u.<\/p><\/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-38e9bd9 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"38e9bd9\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Quy tr\u00ecnh th\u1eed nghi\u1ec7m h\u1ec7 s\u1ed1 ma s\u00e1t<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ec3aabc elementor-widget elementor-widget-text-editor\" data-id=\"ec3aabc\" 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<p data-start=\"2386\" data-end=\"2545\">Th\u1eed nghi\u1ec7m n\u00e0y cho th\u1ea5y r\u00f5 s\u1ef1 thay \u0111\u1ed5i c\u1ee7a c\u00e1c t\u00ednh ch\u1ea5t tr\u01b0\u1ee3t theo th\u1eddi gian, m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c l\u1edbp m\u00e0ng c\u00f3 ch\u1ee9a c\u00e1c ch\u1ea5t ph\u1ee5 gia ph\u1ee5 thu\u1ed9c v\u00e0o th\u1eddi gian.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b4a43e8 e-con-full e-flex e-con e-child\" data-id=\"b4a43e8\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-949eee6 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"949eee6\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInLeft&quot;}\" 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<ol><li>A <strong>xe tr\u01b0\u1ee3t tuy\u1ebft<\/strong> (th\u01b0\u1eddng l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u kim lo\u1ea1i c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng ti\u00eau chu\u1ea9n) \u0111\u01b0\u1ee3c \u0111\u1eb7t l\u00ean m\u1eabu th\u1eed.<\/li><li>M\u1eabu th\u1eed \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh tr\u00ean m\u1ed9t <strong>m\u1eb7t ph\u1eb3ng ph\u1eb3ng<\/strong> (th\u01b0\u1eddng l\u00e0 b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng nh\u01b0 th\u1ee7y tinh ho\u1eb7c kim lo\u1ea1i).<\/li><li>M\u1ed9t thi\u1ebft b\u1ecb \u0111o l\u1ef1c, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed9t <strong>COF-01 Thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m h\u1ec7 s\u1ed1 ma s\u00e1t<\/strong>, t\u1eeb t\u1eeb k\u00e9o chi\u1ebfc xe tr\u01b0\u1ee3t tuy\u1ebft l\u01b0\u1edbt tr\u00ean m\u1eb7t \u0111\u1ea5t.<\/li><li>\u0110i\u1ec7n tr\u1edf \u0111\u01b0\u1ee3c \u0111o v\u00e0 d\u00f9ng \u0111\u1ec3 t\u00ednh to\u00e1n <strong>H\u1ec7 s\u1ed1 ma s\u00e1t t\u0129nh v\u00e0 \u0111\u1ed9ng<\/strong>.<\/li><\/ol>\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-e43e1f1 elementor-widget__width-inherit elementor-invisible elementor-widget elementor-widget-video\" data-id=\"e43e1f1\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/youtu.be\\\/NUgXENOz8J0&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;play_on_mobile&quot;:&quot;yes&quot;,&quot;mute&quot;:&quot;yes&quot;,&quot;loop&quot;:&quot;yes&quot;,&quot;_animation&quot;:&quot;fadeInRight&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\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-36f0624 elementor-widget elementor-widget-text-editor\" data-id=\"36f0624\" 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<p data-start=\"3206\" data-end=\"3431\">K\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o <strong data-start=\"3241\" data-end=\"3318\">chu\u1ea9n b\u1ecb m\u1eabu, hi\u1ec7u chu\u1ea9n thi\u1ebft b\u1ecb v\u00e0 ki\u1ec3m so\u00e1t m\u00f4i tr\u01b0\u1eddng th\u1eed nghi\u1ec7m<\/strong>. S\u1ef1 nhi\u1ec5m b\u1ea9n b\u1ec1 m\u1eb7t, s\u1ef1 ph\u00e2n b\u1ed1 kh\u00f4ng \u0111\u1ec1u c\u1ee7a c\u00e1c ch\u1ea5t ph\u1ee5 gia ho\u1eb7c vi\u1ec7c k\u1eb9p kh\u00f4ng \u0111\u00fang c\u00e1ch \u0111\u1ec1u c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn k\u1ebft qu\u1ea3 sai l\u1ec7ch.<\/p>\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<div class=\"elementor-element elementor-element-9d958da e-flex e-con-boxed e-con e-parent\" data-id=\"9d958da\" 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-5055911 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"5055911\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">Thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m h\u1ec7 s\u1ed1 ma s\u00e1t<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7cac45b elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"7cac45b\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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<p data-pm-slice=\"1 1 []\">\u0110\u1ec3 th\u1ef1c hi\u1ec7n <a href=\"https:\/\/www.coefficientfriction.com\/vi\/astm-d1894\"><strong>ASTM D1894<\/strong><\/a> ki\u1ec3m tra ch\u00ednh x\u00e1c, chuy\u00ean s\u00e2u <a href=\"https:\/\/www.coefficientfriction.com\/vi\/coefficient-of-friction-testing-equipment\/\"><strong>thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m h\u1ec7 s\u1ed1 ma s\u00e1t<\/strong><\/a> l\u00e0 b\u1eaft bu\u1ed9c. C\u00e1c thi\u1ebft b\u1ecb n\u00e0y \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c c\u00e1c bi\u1ebfn s\u1ed1 th\u1eed nghi\u1ec7m nh\u01b0 t\u1ed1c \u0111\u1ed9, l\u1ef1c v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0424cfa e-con-full e-grid e-con e-child\" data-id=\"0424cfa\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-a290580 e-con-full e-flex e-con e-child\" data-id=\"a290580\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-02517ec elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"02517ec\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a thi\u1ebft b\u1ecb ki\u1ec3m tra COF<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-38c9c0f elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"38c9c0f\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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><strong>Xe tr\u01b0\u1ee3t tuy\u1ebft<\/strong>: M\u1ed9t kh\u1ed1i tr\u1ecdng l\u01b0\u1ee3ng ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o ma s\u00e1t.<\/li><li><strong>M\u00e1y bay th\u1eed nghi\u1ec7m<\/strong>: M\u1ed9t b\u1ec1 m\u1eb7t ph\u1eb3ng v\u00e0 \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 \u0111\u1eb7t m\u1eabu th\u1eed l\u00ean.<\/li><li><strong>C\u1ea3m bi\u1ebfn l\u1ef1c<\/strong>: \u0110o \u0111i\u1ec7n tr\u1edf gi\u1eefa t\u1ea5m tr\u01b0\u1ee3t v\u00e0 m\u1eabu th\u1eed.<\/li><li><strong>H\u1ec7 th\u1ed1ng r\u00f2ng r\u1ecdc<\/strong>: Gi\u1eef cho l\u1ef1c t\u00e1c \u0111\u1ed9ng \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 \u0111\u1ec1u.<\/li><li><strong>H\u1ec7 th\u1ed1ng thu th\u1eadp d\u1eef li\u1ec7u<\/strong>: Ghi l\u1ea1i v\u00e0 t\u00ednh to\u00e1n c\u00e1c gi\u00e1 tr\u1ecb h\u1ec7 s\u1ed1 ma s\u00e1t t\u0129nh v\u00e0 \u0111\u1ed9ng.<\/li><\/ul>\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-3a3fc5c e-con-full e-flex e-con e-child\" data-id=\"3a3fc5c\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9e1f2e3 elementor-invisible elementor-widget elementor-widget-image\" data-id=\"9e1f2e3\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\t\t\t\t<a href=\"https:\/\/www.coefficientfriction.com\/vi\/coefficient-of-friction-testing-equipment\/\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/coefficient-of-friction-testing-equipment-01.webp\" class=\"attachment-full size-full wp-image-96\" alt=\"Thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m h\u1ec7 s\u1ed1 ma s\u00e1t 01\" srcset=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/coefficient-of-friction-testing-equipment-01.webp 600w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/coefficient-of-friction-testing-equipment-01-300x300.webp 300w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/coefficient-of-friction-testing-equipment-01-150x150.webp 150w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/elementor\/thumbs\/coefficient-of-friction-testing-equipment-01-r3gmfg1nnljvgm1sgd9e374sfjg8cayrot70czv2xs.webp 400w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/elementor\/thumbs\/coefficient-of-friction-testing-equipment-01-r3gmfg1ovgcb2m7iva4k79z5gvnv026hkls6iecayw.webp 500w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/elementor\/thumbs\/coefficient-of-friction-testing-equipment-01-r3gmfg1nwdb5s7ojc5fmiewgn0ak2nlwv641l9yiy0.webp 420w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\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>\n\t\t\t\t<div class=\"elementor-element elementor-element-4dda243 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"4dda243\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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<p data-start=\"3780\" data-end=\"4096\">Trong s\u1ed1 c\u00e1c gi\u1ea3i ph\u00e1p hi\u1ec7n c\u00f3, <strong>Trang web Coefficientfriction.com\u2019s<\/strong><strong data-start=\"3811\" data-end=\"3869\">\u00a0COF-01 - M\u00e1y \u0111o h\u1ec7 s\u1ed1 ma s\u00e1t<\/strong> n\u1ed5i b\u1eadt nh\u1edd \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n ASTM D1894. \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng cho c\u1ea3 m\u00e0ng m\u1ecfng v\u00e0 t\u1ea5m, COF-01 \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 \u1ed5n \u0111\u1ecbnh, l\u1eb7p l\u1ea1i \u0111\u01b0\u1ee3c, khi\u1ebfn thi\u1ebft b\u1ecb n\u00e0y tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m, c\u00f4ng ty \u0111\u00f3ng g\u00f3i v\u00e0 c\u01a1 quan ki\u1ec3m \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\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<div class=\"elementor-element elementor-element-662ac3d e-flex e-con-boxed e-con e-parent\" data-id=\"662ac3d\" 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-5bc195f elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"5bc195f\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n l\u01b0u \u00fd v\u1ec1 thi\u1ebft b\u1ecb v\u00e0 quy tr\u00ecnh l\u1eafp \u0111\u1eb7t theo ti\u00eau chu\u1ea9n ASTM D1894<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac9f0d2 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"ac9f0d2\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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<p data-start=\"4153\" data-end=\"4278\">C\u00e1i <strong data-start=\"4157\" data-end=\"4179\">B\u1ed9 d\u1ee5ng c\u1ee5 th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D1894<\/strong> bao g\u1ed3m m\u1ed9t m\u1eb7t ph\u1eb3ng v\u00e0 m\u1ed9t chi\u1ebfc xe tr\u01b0\u1ee3t c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 k\u00edch th\u01b0\u1edbc quy \u0111\u1ecbnh. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh l\u1eb7p l\u1ea1i:<\/p><ul><li data-start=\"4282\" data-end=\"4355\">Chi\u1ebfc xe tr\u01b0\u1ee3t ph\u1ea3i di chuy\u1ec3n song song v\u1edbi h\u01b0\u1edbng m\u00e1y c\u1ee7a m\u1eabu th\u1eed.<\/li><li data-start=\"4358\" data-end=\"4426\">C\u00e1c m\u00e9p ph\u1ea3i vu\u00f4ng g\u00f3c, v\u00e0 m\u1eabu th\u1eed ph\u1ea3i ph\u1eb3ng, kh\u00f4ng c\u00f3 n\u1ebfp nh\u0103n.<\/li><li data-start=\"4429\" data-end=\"4515\">C\u1ea7n ti\u1ebfn h\u00e0nh x\u00e9t nghi\u1ec7m \u00edt nh\u1ea5t n\u0103m m\u1eabu th\u1eed cho m\u1ed7i m\u1eabu thu th\u1eadp \u0111\u1ec3 t\u00ednh \u0111\u1ebfn s\u1ef1 bi\u1ebfn \u0111\u1ed9ng.<\/li><\/ul><p data-start=\"4517\" data-end=\"4633\">Vi\u1ec7c ch\u00fa \u00fd \u0111\u1ebfn nh\u1eefng chi ti\u1ebft n\u00e0y s\u1ebd \u0111\u1ea3m b\u1ea3o r\u1eb1ng k\u1ebft qu\u1ea3 kh\u00f4ng b\u1ecb sai l\u1ec7ch do c\u00e1c b\u1ea5t th\u01b0\u1eddng c\u1ee7a m\u1eabu v\u1eadt ho\u1eb7c vi\u1ec7c c\u1ed1 \u0111\u1ecbnh m\u1eabu kh\u00f4ng \u0111\u00fang c\u00e1ch.<\/p>\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<div class=\"elementor-element elementor-element-25d6974 e-flex e-con-boxed e-con e-parent\" data-id=\"25d6974\" 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-beb4dba elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"beb4dba\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">Th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D1894: T\u1ea1i sao n\u00f3 l\u1ea1i quan tr\u1ecdng<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b35d205 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"b35d205\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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<p data-start=\"1712\" data-end=\"1902\">C\u00e1i <strong data-start=\"1716\" data-end=\"1738\">Th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D1894<\/strong> Quy tr\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c nh\u00e0 cung c\u1ea5p v\u1eadt li\u1ec7u v\u00e0 ng\u01b0\u1eddi s\u1eed d\u1ee5ng cu\u1ed1i c\u00f3 th\u1ec3 giao ti\u1ebfp b\u1eb1ng m\u1ed9t ng\u00f4n ng\u1eef k\u1ef9 thu\u1eadt chung. M\u1ed9t s\u1ed1 l\u00fd do ch\u00ednh khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i bao g\u1ed3m:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cca6b83 e-grid e-con-full e-con e-child\" data-id=\"cca6b83\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-43f140f e-con-full e-flex e-con e-child\" data-id=\"43f140f\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4aaca6d elementor-widget elementor-widget-heading\" data-id=\"4aaca6d\" 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<h3 class=\"elementor-heading-title elementor-size-default\">\u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng trong s\u1ea3n xu\u1ea5t<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5cb04ab elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"5cb04ab\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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<p>C\u00e1c gi\u00e1 tr\u1ecb COF th\u1ef1c nghi\u1ec7m gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t m\u00e0ng theo d\u00f5i c\u00e1c \u0111\u1eb7c t\u00ednh tr\u01b0\u1ee3t v\u00e0 duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n.<\/p>\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-cebaebb e-con-full e-flex e-con e-child\" data-id=\"cebaebb\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a94d1e5 elementor-widget elementor-widget-heading\" data-id=\"a94d1e5\" 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<h3 class=\"elementor-heading-title elementor-size-default\">D\u1ef1 \u0111o\u00e1n hi\u1ec7u su\u1ea5t bao b\u00ec<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3333f6a elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"3333f6a\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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<p>B\u1eb1ng c\u00e1ch so s\u00e1nh k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m v\u1edbi hi\u1ec7u su\u1ea5t th\u1ef1c t\u1ebf, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n tr\u01b0\u1edbc c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 kh\u1ea3 n\u0103ng v\u1eadn h\u00e0nh tr\u01b0\u1edbc khi ch\u00fang x\u1ea3y ra.<\/p>\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-bfb5798 e-con-full e-flex e-con e-child\" data-id=\"bfb5798\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-38d70d9 elementor-widget elementor-widget-heading\" data-id=\"38d70d9\" 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<h3 class=\"elementor-heading-title elementor-size-default\">\u0110\u00e1nh gi\u00e1 ch\u1ea5t ph\u1ee5 gia<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3773016 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"3773016\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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<p>T\u00ednh ch\u1ea5t tr\u01b0\u1ee3t th\u01b0\u1eddng xu\u1ea5t ph\u00e1t t\u1eeb c\u00e1c ch\u1ea5t ph\u1ee5 gia c\u00f3 trong m\u00e0ng, ch\u1eb3ng h\u1ea1n nh\u01b0 polyethylene. Vi\u1ec7c th\u1eed nghi\u1ec7m gi\u00fap \u0111\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a c\u00e1c ch\u1ea5t ph\u1ee5 gia n\u00e0y.<\/p>\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-4b2c572 e-con-full e-flex e-con e-child\" data-id=\"4b2c572\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-49c7ffd elementor-widget elementor-widget-heading\" data-id=\"49c7ffd\" 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<h3 class=\"elementor-heading-title elementor-size-default\">\u1ea2nh h\u01b0\u1edfng c\u1ee7a qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a v\u00e0 t\u00ecnh tr\u1ea1ng b\u1ec1 m\u1eb7t<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3390706 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"3390706\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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<p data-start=\"2386\" data-end=\"2545\">Th\u1eed nghi\u1ec7m n\u00e0y cho th\u1ea5y r\u00f5 s\u1ef1 thay \u0111\u1ed5i c\u1ee7a c\u00e1c t\u00ednh ch\u1ea5t tr\u01b0\u1ee3t theo th\u1eddi gian, m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c l\u1edbp m\u00e0ng c\u00f3 ch\u1ee9a c\u00e1c ch\u1ea5t ph\u1ee5 gia ph\u1ee5 thu\u1ed9c v\u00e0o th\u1eddi gian.<\/p>\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>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6d2c64c e-flex e-con-boxed e-con e-parent\" data-id=\"6d2c64c\" 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-c394047 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"c394047\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b484e06 elementor-invisible elementor-widget elementor-widget-n-accordion\" data-id=\"b484e06\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;max_items_expended&quot;:&quot;multiple&quot;,&quot;default_state&quot;:&quot;expanded&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Nh\u1ea5n ph\u00edm Enter ho\u1eb7c ph\u00edm c\u00e1ch \u0111\u1ec3 m\u1edf li\u00ean k\u1ebft, nh\u1ea5n ph\u00edm Escape \u0111\u1ec3 \u0111\u00f3ng, v\u00e0 s\u1eed d\u1ee5ng c\u00e1c ph\u00edm m\u0169i t\u00ean \u0111\u1ec3 \u0111i\u1ec1u h\u01b0\u1edbng\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1890\" class=\"e-n-accordion-item\" open>\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"true\" aria-controls=\"e-n-accordion-item-1890\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 1. T\u1ea1i sao ti\u00eau chu\u1ea9n ASTM D1894 l\u1ea1i quan tr\u1ecdng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u00f3ng g\u00f3i? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1890\" class=\"elementor-element elementor-element-4dda86b e-con-full e-flex e-con e-child\" data-id=\"4dda86b\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b1ee56f elementor-widget elementor-widget-text-editor\" data-id=\"b1ee56f\" 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<p>N\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c m\u00e0ng nh\u1ef1a c\u00f3 t\u00ednh tr\u01a1n tr\u01b0\u1ee3t ph\u00f9 h\u1ee3p \u0111\u1ec3 qu\u00e1 tr\u00ecnh gia c\u00f4ng di\u1ec5n ra su\u00f4n s\u1ebb v\u00e0 b\u1ea3o v\u1ec7 s\u1ea3n ph\u1ea9m.<\/p>\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\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1891\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1891\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 2. S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa h\u1ec7 s\u1ed1 ma s\u00e1t t\u0129nh v\u00e0 h\u1ec7 s\u1ed1 ma s\u00e1t \u0111\u1ed9ng l\u00e0 g\u00ec? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1891\" class=\"elementor-element elementor-element-4213cd7 e-con-full e-flex e-con e-child\" data-id=\"4213cd7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a5cb0ea elementor-widget elementor-widget-text-editor\" data-id=\"a5cb0ea\" 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<p>H\u1ec7 s\u1ed1 ma s\u00e1t t\u0129nh (COF) \u0111o l\u01b0\u1eddng l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1eaft \u0111\u1ea7u chuy\u1ec3n \u0111\u1ed9ng, trong khi h\u1ec7 s\u1ed1 ma s\u00e1t \u0111\u1ed9ng (COF) \u0111o l\u01b0\u1eddng l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec chuy\u1ec3n \u0111\u1ed9ng.<\/p>\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\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1892\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1892\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 3. C\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn vi\u1ec7c th\u1eed nghi\u1ec7m h\u1ec7 s\u1ed1 ma s\u00e1t (COF)? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1892\" class=\"elementor-element elementor-element-8cbaf70 e-con-full e-flex e-con e-child\" data-id=\"8cbaf70\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ed707d2 elementor-widget elementor-widget-text-editor\" data-id=\"ed707d2\" 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<p>Nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m v\u00e0 c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m tr\u00ean b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3 \u0111o ma s\u00e1t.<\/p>\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\t<\/details>\n\t\t\t\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>Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m h\u1ec7 s\u1ed1 ma s\u00e1t t\u0129nh v\u00e0 \u0111\u1ed9ng c\u1ee7a m\u00e0ng v\u00e0 t\u1ea5m nh\u1ef1a Trong l\u0129nh v\u1ef1c th\u1eed nghi\u1ec7m v\u1eadt li\u1ec7u, ti\u00eau chu\u1ea9n ASTM D1894 l\u00e0 m\u1ed9t trong nh\u1eefng ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn r\u1ed9ng r\u00e3i nh\u1ea5t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh h\u1ec7 s\u1ed1 ma s\u00e1t t\u0129nh v\u00e0 \u0111\u1ed9ng c\u1ee7a m\u00e0ng v\u00e0 t\u1ea5m nh\u1ef1a. Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n n\u00e0y cung c\u1ea5p d\u1eef li\u1ec7u quan tr\u1ecdng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 c\u00e1c t\u00ednh ch\u1ea5t tr\u01b0\u1ee3t, v\u1ed1n \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn [\u2026]<\/p>","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":""},"class_list":["post-134","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/pages\/134","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/comments?post=134"}],"version-history":[{"count":6,"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/pages\/134\/revisions"}],"predecessor-version":[{"id":708,"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/pages\/134\/revisions\/708"}],"wp:attachment":[{"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/media?parent=134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}