NF EN ISO 6603-2, T51-116-2 (06/2023)

This document specifies a test method for determining the puncture impact behavior of rigid plastics in the form of flat specimens, using force and deflection measuring instruments. It applies if a force-deflection or force-time curve, recorded for a constant nominal speed of the striker, is necessary to obtain a detailed characterization of the impact behavior. The test method is applicable to specimens with a thickness between 1 mm and 4 mm. The test method is suitable for the following material types: — rigid thermoplastic materials for molding and extrusion, including filled, unfilled and reinforced compositions and sheets; — rigid thermosetting materials for molding and extrusion, including filled and reinforced compositions, sheets and laminates; — fiber-reinforced thermoplastic and thermosetting composites comprising unidirectional or multidirectional reinforcements such as mats, fabrics, roving fabrics, chopped strands, combinations of reinforcements and hybrids, rovings, ground fibers and sheets made from prepreg materials (prepregs). The method is also applicable to specimens which are either cast or machined from finished products, laminates and extruded or cast sheets. The test results are only comparable if the conditions for preparing the specimens, their dimensions and surfaces, as well as the test conditions used are the same. In particular, results determined on specimens of different thicknesses cannot be compared (see Annex E). Comprehensive evaluations of the response to impact stress can be obtained by making the determinations as a function of impact velocity and temperature for different material-specific variables, such as crystallinity or moisture content. The impact behavior of the finished products cannot be directly deduced from the test, but specimens can be taken from the finished products (see above) in order to be tested in accordance with this method. Test data obtained with this method are not intended to be used for design calculations. However, information relating to the characteristic behavior of the materials can be obtained by conducting the tests at different temperatures and impact velocities (see Annex D), by varying the thickness of the specimen (see Annex E). and by testing specimens which have been prepared under different conditions. This document is not intended to provide an explanation of the mechanism that occurs at each particular point on the force-deflection curve. These interpretations are a matter of scientific research.
(Automatic translation from French)