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1、INTERNATIONAL STANDARD ISO 3303 Second edition 1990-03-01 Rubber- or plastics-coated fabrics - Determination of bursting strength Supports textiles revhs rikis tance these apertures are of diameter 31 mm $r 0,5 mm and 35,7 mm * 0,5 mm respectively. The clamping surfaces of the upper and lower clamps
2、 shall be grooved concentrically such that the crowns of the grooves of one plate fit the grooves of the other; The grooves shall be not less than 0,8 mm apart and not less than 0,15 mm deep. The grooves shall Start no further than 3 mm from the edge of the aperture and shall be rounded to a radius
3、of not greater than 0,4 mm. The bottom inner edge of the upper clamp shall be rounded to a radius of 0,5 mm. The lower clamp shall be integral with the chamber in which liquid is introduced at a uniform rate of approximately 1,6 ml/s in the case of the 31 mm aperture and 2,5 ml/s in the case of the
4、35,7 mm aperture. The chamber shall be covered with a rubber diaphragm fitted to expand through the aperture and exerting pressure on the coated fabric between the clamps. NOTE - A testing machine having an apetture of diameter 31 mm + 0,5 mm will not necessarily give the same results as a testing m
5、achine having an aperture of diameter 35,7 mm b) all details necessary for the identification of the Sample; c) the conditioning method, atmosphere and time of ex- posure; d) the conditions in which the test was conducted; e) the method of test, i.e. method A or B, and, in the latter case, the apert
6、ure used; f) for method A, the rupturing forte, expressed in newtons; for method B, the bursting strength, expressed in kilopascals; g) for method B, the type of burst obtained. 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical
7、Standards 1/9972545001 Not for Resale, 04/26/2007 19:11:05 MDTNo reproduction or networking permitted without license from IHS -,-,- so 3303 : 1990 EI UDC 678.066 : 677.017464 l Descriptors : coated fabrics, fabrics coated with plastics, fabrics coated with rubber, tests, burst tests, test equipment. Price based on 3 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:11:05 MDTNo reproduction or networking permitted without license from IHS -,-,-