ISO 29584:2015 pdf download

ISO 29584:2015 pdf download.Glass in building — Pendulum impact testing and classification of safety glass
1 Scope
The purpose of this International Standard is to evaluate, by means of soft body impactors, safe breakage characteristics of glazing products intended to reduce cutting and piercing injuries to persons through accidental impact. This International Standard examines test methods currently employed to determine the pendulum impact performance of safety glass. Use of the methodologies in this International Standard improves the reproducibility of test results and gives a common basis of classification. The aim is for the performance of glass products manufactured and tested in various countries to be better understood and more consistent. Two types of soft body impactors are defined. The traditional shot bag impactor is detailed both in terms of manufacture and maintenance in an attempt to overcome problems associated with such impactors becoming misshapen. The twin tyre impactor is also detailed. The test equipment, excluding the impactor, is also described. A method of calibrating the test frame is given. The benefit of calibrating the test equipment is the increased reproducibility of the test results. Classification of glass products is also detailed. The classification system allows information on the following to be given: a) the maximum drop height at which the glass either did not break or broke safely, i.e. in a manner similar to laminated glass or toughened glass; b) the manner in which the glass would break, i.e. as toughened glass, laminated glass, annealed glass, irrespective of whether or not the glass was broken during the test; c) the maximum drop height at which the glass either did not break or broke safely, i.e. in a manner similar to laminated glass. This International Standard does not specify the intended use of the products, but provides a method of classification in terms of the performance of the materials being tested.
4.2 Numerous cracks appear, but no shear or opening is allowed within the test piece through which a (76 ± 1) mm diameter sphere can pass when a maximum force of 25 N is applied (in accordance with Annex C). Additionally, if particles are detached from the test piece up to 3 min after impact, they shall, in total, weigh no more than the mass equivalent to 10 000 mm 2 of the original test piece. The largest single particle shall weigh no more than the mass equivalent of 4 400 mm 2 of the original test piece. Within 5 min of impact and disintegration occurs the 10 largest crack-free particles collected shall weigh no more than the mass equivalent to 6 500 mm 2 of the original test piece. The particles shall be selected only from the portion of the original test piece exposed in the test frame. Only the exposed area of any particle retained in the test frame shall be taken into account in determining the mass equivalent.