Oluschinski: Created page with "{{Language_sel|LANG=ger|ARTIKEL=Kerbschlagzugversuch}} {{PSM_Infobox}} Notched tensile impact test, conventional FORCETOC ==General== The aim of the conventional notched tensile-impact test in accordance with DIN EN ISO 8256 ‘Plastics – Determination of tensile-impact strength’ is to investigate the behaviour of test specimens at relatively high impact speeds and to evaluate the Toughness|t..."

2026-09-04T09:38:35Z

Created page with "{{Language_sel|LANG=ger|ARTIKEL=Kerbschlagzugversuch}} {{PSM_Infobox}} Notched tensile impact test, conventional __FORCETOC__ ==General== The aim of the conventional notched tensile-impact test in accordance with DIN EN ISO 8256 ‘Plastics – Determination of tensile-impact strength’ is to investigate the behaviour of test specimens at relatively high impact speeds and to evaluate the Toughness|t..."

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{{Language_sel|LANG=ger|ARTIKEL=Kerbschlagzugversuch}}
{{PSM_Infobox}}
Notched tensile impact test, conventional
__FORCETOC__

==General==

The aim of the conventional notched tensile-impact test in accordance with DIN EN ISO 8256 ‘Plastics – Determination of tensile-impact strength’ is to investigate the behaviour of [[Specimen|test specimens]] at relatively high impact speeds and to evaluate the [[Toughness|toughness]] or brittleness of [[Plastics|plastics]] and [[Elastomers|elastomers]] [1].

In principle, the notched tensile-impact test (using [[Notching|notched]] test specimens) is particularly suitable for investigating materials for which the performance of [[Impact Test|impact tests]] and [[Notched Impact Test|notched impact tests]] according to [[Charpy, Georges|Charpy]] ([[Bend Test#The three-point bending test method|three-point bending configuration]]) is unsuitable due to the nature of the test specimens (thickness, flexibility). Very thin test specimens, e.g. those made from films, or very flexible test specimens (elastomeric materials), can therefore be subjected to [[Impact Loading Plastics|impact loading]], thereby allowing their toughness properties to be assessed under sudden loading conditions.

==Carrying out the method==

The test is carried out using the notched tensile- impact test at a relatively high [[Deformation Velocity|deformation velocity]]. The method is suitable for [[Specimen|test specimens]] produced from [[Moulding Compound|moulding compounds]] or taken from semi-finished products and moulded parts, and is used for production and quality control. The conventional notched tensile-impact test also makes it possible to determine the mechanical [[Anisotropy|anisotropic behaviour]] by taking test specimens from test plates or components (see: [[Component Testing|component testing]]) in different directions and testing them.

[[Impact Loading Pendulum Impact Tester|Pendulum impact testers]] are used to carry out such experiments; these are equipped with the additional equipment required for [[Tensile Impact Test|tensile impact tests]], such as special pendulum hammers and clamping devices (e.g. the Resil Impactor from Ceast).

[[File:RTEmagicC_resil_impactor.jpg.jpg]]
{|
|- valign="top"
|width="50px"|'''Fig. 1''':
|width="600px" |Resil Impactor pendulum impact tester manufactured by Ceast (Italy) for carrying out [[Tensile Impact Test|impact]] and notched tensile-impact tests
|}

The dimensions of the [[Specimen|test specimens]] used to determine the notched tensile-impact strength are as follows:

Length L = 80 mm

Width W = 10 mm

Notch depth a: 2 mm for each of the notches on both sides

To carry out the notched tensile-impact tests, the [[Specimen|test specimens]] are secured within the test rig using a fixed clamping device on one side and a crosshead clamp on the other. After the [[Impact Loading Pendulum Impact Tester|pendulum hammer]] is released from its initial position, the [[Specimen|test specimens]] are loaded in the longitudinal direction until [[Fracture|fracture]] occurs.

==Parameters==

The results of the experiment are used to determine the impact energy ''E''c, and subsequently the conventional notched impact- tensile strength ''a''tN is calculated:

{|
|-
|width="20px"|
|width="500px" | <math>a_{tN}\,=\,\frac{E_c}{b_N\cdot h}</math>
|}

A comprehensive literature review on the conventional tensile-impact strength ''a''tN for numerous [[Plastics|plastics]] is provided in [2].

To determine fracture mechanics parameters for films and [[Elastomers|elastomers]], the conventional notched tensile-impact test must be [[Electronic Instrumentation|instrumented]] with force and [[Strain Gauge|displacement sensors]]. The method of the [[Instrumented Tensile Impact Test (ITIT)|instrumented tensile impact test]] enhances the informative value of the results obtained and enables the optimisation of [[Material & Werkstoff|material]] properties as well as an improved assessment of the service behaviour of components [3].

==See also==

* [[Tensile Impact Test|Tensile impact test]]
* [[Impact Loading Pendulum Impact Tester|Impact loading pendulum impact tester]]
* [[Multipurpose Test Specimen|Multipurpose test specimen]]
* [[Tensile Test|Tensile test]]

==References==

{|
|-valign="top"
|[1]
|ISO 8256 (2023-11): Plastics – Determination of Tensile-impact Strength
|-valign="top"
|[2]
|[[Reincke,_Katrin|Reincke, K.]], [[Grellmann,_Wolfgang|Grellmann, W.]]: Tensile-impact toughness. In: [https://www.researchgate.net/profile/Wolfgang-Grellmann Grellmann, W.], [[Seidler,_Sabine|Seidler, S.]]: Mechanical and Thermomechanical Properties of Polymers. Landolt-Börnstein. Volume VIII/6A3, Springer, Berlin (2014) pp. 236–240 (ISBN 978-3-642-55165-9; see [[AMK-Library]] under A 16)
|-valign="top"
|[3]
|Reincke, K.: Elastomere Werkstoffe – Zusammenhang zwischen Mischungsrezeptur, Struktur und mechanischen Eigenschaften sowie dem Deformations- und Bruchverhalten. Habilitation. Martin-Luther-Universität Halle-Wittenberg, Shaker Publishing (2016) (ISBN 978-3-8440-4637-3; see [[AMK-Library]] under B 2-2)
|}

[[Category:Impact Tests]]
[[Category:Tensile Test]]

Notched Tensile Impact Test - Revision history