इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 7016-13 (2003): Method of Test for Coated and Treated Fabrics, Part 13: Rubber - or Plastics-Coated Fabrics - Determination of Crush Resistance [PCD 13: Rubber and Rubber Products] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 7016 (Part 13) :2003 1s0 5473:1997 m 13 Wi’q-Wmlwrfi%m-afwwr q”f?wafaafzlalsim m=rf ( W?wl ylftm ) Indian Standard METHODS OF TEST FOR COATED AND ~ TREATED FABRICS ( PART 13 RUBBER- OR PLASTICS-COATED FABRICS— DETERMINATION OF CRUSH RESISTANCE r“ ‘ -..’. 3’ }, First Revision) ( ICS 59.080.40 0 BIS 2003 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELH! 110002 June 2003 Price Group 2 .. m,, ..-. Rubber and Rubber Products Sectional Committee, PCD 13 NATIONAL FOREWORD This Indian Standard (Part 13) (First Revision) which isidentical with ISO 5473:1997 ‘Rubber-or plastics- coated fabrics — Determination of crush resistance’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendations of the Rubber and Rubber Products Sectional Committee and approval of the Petroleum, Coal and Related Products Division Council. This standard was first published in 1987 aligning with ISO 5473:1979 ‘Rubber-or plastics-coated fabrics — Determination ofcrush resistance’. The Committee, therefore, decided to revise this standard to completely align with ISO 5473:1997. The text of ISO Standard has been proposed to be approved as suitable for publication as Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following: a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’. b) Comma (,) has been used as adecimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker. In this adopted standard, reference appears to the following International Standards for which no Indian Standard exists. ISO No. Title ISO 2231:1989 Rubber- or plastics-coated fabrics— Standard atmospheres for conditioning and testing ISO 2286-1:1) Rubber- or plastics-coated fabrics — Determination of roll characteristics — Part 1: Method for determination of the length, width and net mass of a roll In case of ISO 2231 :1989 an d ISO 2286-1, the Committee, responsible for the preparation of these standards, took cognizance ofthese standards and decided that they are acceptable for use inconjunction with this standard. For tropical countries like India, the standard temperature and the relative humidity shall be taken as 27& 2°C and 65&5 percent respectively. II TObe published (Revision, inParts ofISO 2286:1986) .. ,.- >...,-..~ IS 7016 (Part 13) :2003 1s0 5473:1997 Indian Standard METHODS OF TEST FOR COATED AND TREATED FABRICS PART 13 RUBBER- OR PLASTICS-COATED FABRICS— DETERMINATION OF CRUSH RESISTANCE First Revision) ( 1 Scope This International Standard specifies a method for determining the crush resistance of fabrics coated with rubber or plastics. The method isapplicable particularly to diaphragm material cut from coated fabrics. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 2231:1989, Rubber- or plastics-coated fabrics — Standard atmospheres for conditioning and testing. ISO 2286-1 :—”, Rubber- or plastics-coated fabrics — Determination of roll characteristics — Part 1: Method for determination of the length, width and net mass of a roll. 3 Principle The coated fabric is subjected to a controlled load application over a known area until the fabric is crushed. 4 Apparatus 4.1 Base plate, having the dimensions shown in figure 1. 4.2 Load button assembly, having the dimensions shown in figure 2, 4.3 Compression-testing machine, having a speed of approximately 0,08 mm/s, Any type of machine that will meet this requirement may also be used. For example, a platform scale equipped with a yoke over the platform and a hand-operated screw to apply the force will ‘serve if it conforms to the requirements prescribed for accuracy and speed. The load source shall have atotal capacity of at Ieast 5400 N. . 1)To be published. (Revision, in parts, of ISO 2286:1 986) .. IS 7016 (part 13) :2003 1s0 5473:1997 Dimensions inmillimetres I---J”” --J Figure 1— Base plate Dimensions inmillimetres ,-—— —-— -————- 75 .— 37,5 .— 1 ——- 1 I 0 N 9“”-- Ai x (3:1) -L -i 1 erL5” aU Ra32 d NOTES 1 Allsharp edges tobe removed. 2 Button tobe press-fitted inplate. Figure 2 — Load button assembly 2 IS 7016 (Part 13) :2003 1s0 5473:1997 4.4 Force-recording mechanism, comprising a calibrated dial with a maximum pointer, or astrip-chart to indicate the force required to crush the fabric. Unless otherwise specified for force determination, the machine shall be so adjusted that the maximum force required to crush the test piece may be readily detected by the maximum pointer or read from the strip-chart. The error of the machine shall not exceed 2 O/.up to and including 200 Nforce and 104 over 200 Nforce. 5 Test pieces Cut the test pieces from the usable width of the roll as defined in ISO 2286-1. The test pieces shall be at least 50 mm wide and 200 mm long. At least three test values shall be obtained from each sample. 6 Time-interval between manufacturing and testing 6.1 For all purposes, the minimum time between manufacturing and testing shall be 16 h. 6.2 When the test is for comparison of materials, it is strongly recommended that these periods be as close to each other as possible. 6.3 For product tests, the time between manufacturing and testing should, whenever possible, not exceed 3 months. In other cases, tests shall be made within 2 months of the date of receipt by the customer. 7 Conditioning and test atmosphere The test pieces shall be conditioned and tested in one of the atmospheres A, B and C defined in ISO 2231. 8 Procedure 8.1 Place the base plate (4.1) on the platform of the testing machine (4.3) and place the test piece on the base plate. Ifthe material to be tested has an unbalanced coating, the side having the thicker coating shall be facing upward. 8.2 Place the load button of the machine on to the test piece so that the recess of the button, as shown in figure 2, is in contact with the test piece and its axis is perpendicular to the plane of the test piece. The circumference of the load button shall be at least 12 mm from any edge of the test piece. Apply the force to the button at the rate of approximately 0,08 mm/s until the shear yield point or maximum deflection of the dial pointer is reached, whichever isthe lesser. Record the force required to crush the test piece. Repeat the procedure at least twice more on a new area of the test piece at least 12 mm away from other test sites and from any edge. 8.3 Fabric crushing can readily be detected by stretching the test piece. The fabric will have noticeably less resistance to stretching in the damaged areas when compared with the undamaged areas. 9 Test report The test report shall include the following particulars: a) a reference to this International Standard; b) the reference and date of manufacture, if known, of each sample tested; .. ,.. -L.,-.., IS 7016 (Part 13) :2003 1s0 5473: 1997 c) the atmosphere used for conditioning and testing; d) the number of test pieces tested; e) the force required to crush the coating or the fabric, whichever occurs first, in each test piece. 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