{"id":11329,"date":"2023-03-31T07:33:45","date_gmt":"2023-03-31T07:33:45","guid":{"rendered":"https:\/\/lenard.tech\/producto\/astm-d3787\/"},"modified":"2023-08-28T13:38:50","modified_gmt":"2023-08-28T13:38:50","slug":"astm-d37872020","status":"publish","type":"product","link":"https:\/\/lenard.tech\/en\/producto\/astm-d37872020\/","title":{"rendered":"ASTM D3787:2020"},"content":{"rendered":"<section class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text woodmart_inline=&#8221;no&#8221; text_larger=&#8221;no&#8221;]<\/p>\n<p id=\"tw-target-text\" class=\"tw-data-text tw-text-large tw-ta\" dir=\"ltr\" data-placeholder=\"Traducci\u00f3n\"><span class=\"Y2IQFc\" lang=\"en\">STANDARD TEST METHOD FOR BURST RESISTANCE OF TEXTILES CONSTANT RATE DISPLACEMENT BALL BURST TEST (CRT)<\/span><\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_tta_tabs][vc_tta_section title=&#8221;DEFINITION&#8221; tab_id=&#8221;1686236123488-f326608a-f528&#8243;][vc_column_text woodmart_inline=&#8221;no&#8221; text_larger=&#8221;no&#8221;]This standard describes the burst strength of textile balls that exhibit a high degree of elongation. Values \u200b\u200bstated are in SI units or inch-pound units.[\/vc_column_text][\/vc_tta_section][vc_tta_section title=&#8221;TESTING METHOD&#8221; tab_id=&#8221;1686236123496-e4013a9c-7029&#8243;][vc_column_text woodmart_inline=&#8221;no&#8221; text_larger=&#8221;no&#8221;]A specimen is securely clamped without tension between the circular slotted plates of the ball break fixture secured to the (movable) traction jaw for the constant velocity travel testing (CRT) machine. A force is exerted against the specimen by a hardened and polished steel ball that is attached to the pendulum (fixed) jaw of the machine, until rupture occurs.[\/vc_column_text][\/vc_tta_section][vc_tta_section title=&#8221;APPLIANCES&#8221; tab_id=&#8221;1686236239562-82f8497e-52f7&#8243;][vc_column_text woodmart_inline=&#8221;no&#8221; text_larger=&#8221;no&#8221;]<\/p>\n<ul>\n<li>Constant Velocity Travel (CRT) Tensile Testing Machine (CRT) with a ball burst fixture that replaces the clamp assembly.<\/li>\n<li>Ball Drill Attachment.<\/li>\n<li>The polished steel ball shall have a diameter of 25.400 \u00b1 0.005 mm (1.0000 \u00b1 0.0002 in.) and shall be spherical. The ring clamp shall have a diameter of 44.450 \u00b1 0.025 mm (1.750 \u00b1 0.001 in.).<\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_single_image image=&#8221;8245&#8243; img_size=&#8221;FULL&#8221; alignment=&#8221;center&#8221; onclick=&#8221;link_image&#8221; parallax_scroll=&#8221;no&#8221; woodmart_inline=&#8221;no&#8221;][\/vc_tta_section][vc_tta_section title=&#8221;SAMPLES&#8221; tab_id=&#8221;1686236275946-3e7bfc64-daa8&#8243;][vc_column_text woodmart_inline=&#8221;no&#8221; text_larger=&#8221;no&#8221;]<\/p>\n<ol>\n<li>Take a sample from the lot as indicated in the applicable material specification.<\/li>\n<li>Cut at least one lab sample the full width of the fabric and at least 1m (1yd) along the selvage.<\/li>\n<li>take five test tubes<\/li>\n<li>Each specimen shall be at least a 125 mm (5 in.) square or a 125 mm (5 in.) diameter circle.<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<p>[\/vc_column_text][\/vc_tta_section][vc_tta_section title=&#8221;CONDITIONING&#8221; tab_id=&#8221;1686236320264-df5a8f05-78bc&#8221;][vc_column_text woodmart_inline=&#8221;no&#8221; text_larger=&#8221;no&#8221;]<\/p>\n<ul>\n<li>According to Standard D1776<\/li>\n<li>Place the sample without tension in the clamping ring and clamp securely by means of the screw or lever device. Start the CRT tensile testing machine, using a tensile clamp speed of 305 \u00b1 13 mm\/min (12 \u00b1 0.5 in\/min), and continue at that speed until the specimen bursts.<\/li>\n<li>Record to the nearest 0.5 N (0.1 lb) the resistance to bursting of the sample ball.<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_tta_section][vc_tta_section title=&#8221;RESULTS&#8221; tab_id=&#8221;1686236359800-25e876b8-4818&#8243;][vc_column_text woodmart_inline=&#8221;no&#8221; text_larger=&#8221;no&#8221;]Calculate the average burst force to the nearest 0.5 N (0.1 lb) for each laboratory sample and for the lot.<\/p>\n<p>List specimens tested as outlined in ASTM D3787 test method.<\/p>\n<p>Describe the material or product.<\/p>\n<p>Report the burst strength of each specimen and the average burst strength to the nearest 0.5 N (0.1 lbf).[\/vc_column_text][\/vc_tta_section][\/vc_tta_tabs][\/vc_column][\/vc_row]<\/p>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>Standard test method for burst resistance of textiles constant rate displacement ball burst test (CRT)<\/p>\n","protected":false},"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"product_cat":[883],"product_tag":[],"class_list":["post-11329","product","type-product","status-publish","hentry","product_cat-normative"],"acf":[],"_links":{"self":[{"href":"https:\/\/lenard.tech\/en\/wp-json\/wp\/v2\/product\/11329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lenard.tech\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/lenard.tech\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/lenard.tech\/en\/wp-json\/wp\/v2\/comments?post=11329"}],"wp:attachment":[{"href":"https:\/\/lenard.tech\/en\/wp-json\/wp\/v2\/media?parent=11329"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/lenard.tech\/en\/wp-json\/wp\/v2\/product_cat?post=11329"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/lenard.tech\/en\/wp-json\/wp\/v2\/product_tag?post=11329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}