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1.1 This document specifies a method for determining Charpy impact properties of plastics from force-deflection diagrams. Different types of rod-shaped test specimens and test configurations, as well as test parameters depending on the type of material, the type of test specimen and the type of notch, are defined in ISO 179-1. Dynamic effects such as load-cell/striker resonance, test specimen resonance and initial-contact/inertia peaks are described in this document (see Figure 1, Curve b, and Annex A). 1.2 ISO 179-1 is suitable for characterizing the impact behaviour by the impact strength only and for using apparatus whose potential energy is matched approximately to the particular energy to break to be measured (see ISO 13802:2015, Annex E). This document is used to record a force-deflection or force-time diagram for detailed characterization of the impact behaviour, and for developing automatic apparatus, i.e. avoiding the need to match energy. The method described in this document is also suitable for:. — acquiring more and different materials characteristics under impact conditions;. — supervising the Charpy test procedure, as this instrumentation allows detection of typical

Who reads Plastics - Determination of Charpy impact properties - Part 2: Instrumented impact test?

Author

ISO/TC 61/SC 2 Mechanical behavior

Publisher

ISO

Published

2020

Language

EN

Category

reference