{"id":11236,"date":"2023-03-31T08:59:28","date_gmt":"2023-03-31T08:59:28","guid":{"rendered":"https:\/\/lenard.tech\/producto\/une-en-iso-13934-1\/"},"modified":"2025-03-18T08:21:24","modified_gmt":"2025-03-18T08:21:24","slug":"une-en-iso-13934-12013","status":"publish","type":"product","link":"https:\/\/lenard.tech\/en\/producto\/une-en-iso-13934-12013\/","title":{"rendered":"UNE-EN ISO 13934-1:2013"},"content":{"rendered":"

[vc_row][vc_column width=”1\/2″][vc_column_text woodmart_inline=”no” text_larger=”no”]<\/p>\n

PROPERTIES OF TENSILE FABRICS PART 1: DETERMINATION OF THE MAXIMUM FORCE AND ELONGATION OF MAXIMUM FORCE USING THE STRIP METHOD<\/span><\/h1>\n

[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][vc_video link=”https:\/\/youtu.be\/QpVjLDFRXcs” el_width=”70″ woodmart_css_id=”67d92cf965041″ image_poster_switch=”no”][\/vc_column][\/vc_row][vc_row][vc_column][vc_tta_tabs][vc_tta_section title=”TRACTION PROPERTIES OF PROTECTIVE FABRICS” tab_id=”1686216047458-90f1e063-c0ec”][vc_column_text woodmart_inline=”no” text_larger=”no”]Part 1: Determination of maximum force and elongation using the strip method. (ISO 13934-1:1999)<\/p>\n

ISO 13934-1 includes the following parts:<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Part 1: Determination of maximum force and elongation of maximum force using the strip method.[\/vc_column_text][\/vc_tta_section][vc_tta_section title=”SUGGESTED PROCEDURE FOR TAKING SAMPLES” tab_id=”1686216047467-115fea4c-5f4f”][vc_column_text woodmart_inline=”no” text_larger=”no”]It is convenient to randomly select the appropriate number of pieces as indicated in the table[\/vc_column_text][vc_single_image image=”12153″ img_size=”FULL” alignment=”center” parallax_scroll=”no” woodmart_inline=”no”][vc_column_text woodmart_inline=”no” text_larger=”no”]<\/p>\n

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  • When the maximum wet strength of a fabric is requested, strips of the appropriate width must be cut and the length is at least twice that of the dry test. Each end of each of the strips must be numbered and frayed.<\/li>\n
  • The test tube is submerged for a period of 1h in class 3 water, in accordance with ISO 3696, at a temperature of (20\u00b12) \u00baC.<\/li>\n<\/ul>\n

    [\/vc_column_text][\/vc_tta_section][vc_tta_section title=”TEST CONDITIONS” tab_id=”1686216087549-1867c75b-3f0e”][vc_column_text woodmart_inline=”no” text_larger=”no”]<\/p>\n

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    • The upper jaw, allowing it to hang free under its own weight and then guiding it by hand to ensure alignment perpendicular to the line of force, when the jaw is closed.<\/li>\n
    • The specified pre-tension is applied as indicated.\n
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      1. For all fabrics with elastic properties: 0.5 N<\/li>\n
      2. For fabrics without elastic properties, as a function of their mass per unit area:<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n
          \n
        1. <<\/u> 200 g\/m2<\/sup>: 2N<\/li>\n
        2. ><\/u> 200 g\/m2<\/sup> a 500 g\/m2<\/sup> 5N<\/li>\n
        3. ><\/u> 500 g\/m2<\/sup>: 10N<\/li>\n<\/ol>\n
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          • 5 samples are tested in each direction of the warp and weft fabric (pretreated or not depending on the requirement of the classification standard).<\/li>\n
          • Samples 20x5cm without fringes, in each direction with exact number of threads in the 5cm once frayed.<\/li>\n
          • Dynamometer with constant speed 100mm\/min; one static clamp and the other dynamic until the sample breaks.<\/li>\n
          • The tissue specimen is stretched at a constant speed until it breaks. Its maximum force and maximum elongation at break are determined.<\/li>\n
          • If any of the jaw breakage results is higher than the lowest \u201cnormal\u201d breakage result, it can be taken into account. If any of the jaw break results are less than the lowest \u201cnormal\u201d break result, it should be rejected and further tests performed in order to obtain five \u201cnormal\u201d breaks.<\/li>\n<\/ul>\n

            [\/vc_column_text][vc_single_image image=”12157″ img_size=”full” alignment=”center” parallax_scroll=”no” woodmart_inline=”no”][\/vc_tta_section][vc_tta_section title=”TEST REPORT” tab_id=”1686216101105-b1f62ec1-442e”][vc_column_text woodmart_inline=”no” text_larger=”no”]The test report must contain the following information:<\/p>\n

              \n
            1. The reference to this part of EN ISO 13934 and the date of the test;<\/li>\n
            2. The identification of the tested sample and the sampling method.<\/li>\n
            3. The length, in millimeters, of the assay used.<\/li>\n
            4. The rate of elongation used in percent per minute or the rate of extension, in millimeters per minute.<\/li>\n
            5. The applied prestress, in Newtons.<\/li>\n
            6. The state of the samples.<\/li>\n
            7. The number of samples tested and the number of tests rejected with the reasons for the rejections.<\/li>\n
            8. The width of the strip, if not 50 mm +\/- 0.5 mm, and the number of threads in the strip.<\/li>\n
            9. Any deviation from the described operative procedure.<\/li>\n
            10. The arithmetic mean of the maximum force and, if necessary, of the force at break, in Newtons.<\/li>\n
            11. The arithmetic mean of the elongation at maximum force and, if necessary, of the elongation at break, in percent<\/li>\n
            12. The coefficient of variation of the force and the corresponding elongation, in percentage.<\/li>\n
            13. The 95% confidence limits of the force, in Newtons, and of the corresponding elongation, in percentage.<\/li>\n<\/ol>\n

              [\/vc_column_text][\/vc_tta_section][vc_tta_section title=”CALCULATION AND APPEARANCE OF THE RESULTS” tab_id=”1686216120628-018e19ea-0b00″][vc_column_text woodmart_inline=”no” text_larger=”no”]Calculate the arithmetic mean of the maximum force and, if requested, the arithmetic mean of the force at break, in Newtons, for each direction tested.<\/p>\n

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              • Round the result for values:<\/li>\n<\/ul>\n

                [\/vc_column_text][vc_single_image image=”12161″ img_size=”full” alignment=”center” parallax_scroll=”no” woodmart_inline=”no”][vc_column_text woodmart_inline=”no” text_larger=”no”]<\/p>\n

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                • Calculate the arithmetic mean of the elongation at maximum force and, if necessary, at break for each direction tested and round to the nearest:<\/li>\n<\/ul>\n

                  If needed, calculate the coefficient of variation to the nearest 0.1% and 95% confidence limits for the properties listed.<\/p>\n

                  [\/vc_column_text][vc_single_image image=”12165″ img_size=”full” alignment=”center” parallax_scroll=”no” woodmart_inline=”no”][\/vc_tta_section][\/vc_tta_tabs][\/vc_column][\/vc_row]<\/p>\n<\/section>","protected":false},"excerpt":{"rendered":"

                  PROPERTIES OF TENSILE FABRICS. PART 1: DETERMINATION OF THE MAXIMUM FORCE AND ELONGATION OF MAXIMUM FORCE USING THE STRIP METHOD<\/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-11236","product","type-product","status-publish","hentry","product_cat-normative"],"acf":[],"_links":{"self":[{"href":"https:\/\/lenard.tech\/en\/wp-json\/wp\/v2\/product\/11236","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=11236"}],"wp:attachment":[{"href":"https:\/\/lenard.tech\/en\/wp-json\/wp\/v2\/media?parent=11236"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/lenard.tech\/en\/wp-json\/wp\/v2\/product_cat?post=11236"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/lenard.tech\/en\/wp-json\/wp\/v2\/product_tag?post=11236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}