NF EN ISO 179-1
Plastics - Determination of Charpy impact properties - Part 1 : non-instrumented impact test
ISO 179-1:2010 specifies a method for determining the Charpy impact strength of plastics under defined conditions. A number of different types of specimen and test configurations are defined. Different test parameters are specified according to the type of material, the type of test specimen and the type of notch. The method can be used to investigate the behaviour of specified types of specimen under the impact conditions defined and for estimating the brittleness or toughness of specimens within the limitations inherent in the test conditions. It can also be used for the determination of comparative data from similar types of material. The method has a greater range of applicability than that given in ISO 180 (Izod impact testing) and is more suitable for the testing of materials showing interlaminar shear fracture or of materials exhibiting surface effects due to environmental factors. The method is suitable for use with the following range of materials: rigid thermoplastic moulding and extrusion materials (including filled and reinforced compounds in addition to unfilled types) and rigid thermoplastics sheets; rigid thermosetting moulding materials (including filled and reinforced compounds) and rigid thermosetting sheets (including laminates); fibre-reinforced thermosetting and thermoplastic composites incorporating unidirectional or multi-directional reinforcements (such as mats, woven fabrics, woven rovings, chopped strands, combination and hybrid reinforcements, rovings and milled fibres) or incorporating sheets made from pre-impregnated materials (prepregs), including filled compounds; thermotropic liquid-crystal polymers.
ISO 179-1:2010 specifies a method for determining the Charpy impact strength of plastics under defined conditions. A number of different types of specimen and test configurations are defined. Different test parameters are specified according to the type of material, the type of test specimen and the type of notch.
The method can be used to investigate the behaviour of specified types of specimen under the impact conditions defined and for estimating the brittleness or toughness of specimens within the limitations inherent in the test conditions. It can also be used for the determination of comparative data from similar types of material.
The method has a greater range of applicability than that given in ISO 180 (Izod impact testing) and is more suitable for the testing of materials showing interlaminar shear fracture or of materials exhibiting surface effects due to environmental factors.
The method is suitable for use with the following range of materials:
- rigid thermoplastic moulding and extrusion materials (including filled and reinforced compounds in addition to unfilled types) and rigid thermoplastics sheets;
- rigid thermosetting moulding materials (including filled and reinforced compounds) and rigid thermosetting sheets (including laminates);
- fibre-reinforced thermosetting and thermoplastic composites incorporating unidirectional or multi-directional reinforcements (such as mats, woven fabrics, woven rovings, chopped strands, combination and hybrid reinforcements, rovings and milled fibres) or incorporating sheets made from pre-impregnated materials (prepregs), including filled compounds;
- thermotropic liquid-crystal polymers.
Le présent document décrit une méthode pour déterminer la résistance au choc Charpy des plastiques dans des conditions définies.
Cet amendement précise à qui incombent les vérifications entre l'utilisateur et le fabricant de l'appareil.
<p class="MsoBodyText"><span lang="EN-GB">This document specifies a method for determining the Charpy impact strength of plastics under defined conditions. A number of different types of specimen and test configurations are defined. Different test parameters are specified according to the type of material, the type of test specimen and the type of notch.</span></p> <p class="MsoBodyText"><span lang="EN-GB">The method can be used to investigate the behaviour of specified types of specimen under the impact conditions defined and for estimating the brittleness or toughness of specimens within the limitations inherent in the test conditions. It can also be used for the determination of comparative data from similar types of material.</span></p>
- Avant-proposiv
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1 Domaine d'application1
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2 Références normatives2
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3 Termes et définitions2
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4 Principe3
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5 Appareillage3
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5.1 Machine d'essai3
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5.2 Micromètres et comparateurs4
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6 Éprouvettes4
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6.1 Préparation4
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6.2 Anisotropie7
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6.3 Formes et dimensions8
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6.4 Nombre d'éprouvettes9
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6.5 Définition de la distance entre appuis de l'éprouvette, L10
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6.6 Conditionnement11
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7 Mode opératoire11
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8 Calcul et expression des résultats12
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8.1 Éprouvettes non entaillées12
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8.2 Éprouvettes entaillées12
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8.3 Paramètres statistiques13
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8.4 Chiffres significatifs13
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9 Fidélité13
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10 Rapport d'essai13
- Annexe A (informative) Méthodes supplémentaires pour étudier l'influence des effets de surface15
- Annexe B (informative) Données relatives à la fidélité17
- Annexe C (informative) Détermination du rayon de la pointe de l'entaille au microscope CCD19
- Bibliographie22
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