Oluschinski at 05:53, 15 December 2025

2025-12-15T05:53:22Z

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	[[category:Tensile Test\|Tensile test]]		[[category:Tensile Test\|Tensile test]]
			[[Category:Creep Behaviour Plastics]]

Oluschinski: Created page with "{{Language_sel|LANG=ger|ARTIKEL=Zeitstandzugversuch}} {{PSM_Infobox}} Tensile creep test FORCETOC ==General information== The creep tensile test for determining resistance to environmental stress cracking (ESC) is one of the three most important methods for testing the stress crack resistance of plastics, alongside the flexural strip method and the ball or pin indentation method [1]. The standardi..."

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Created page with "{{Language_sel|LANG=ger|ARTIKEL=Zeitstandzugversuch}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Tensile creep test</span> __FORCETOC__ ==General information== The creep tensile test for determining resistance to environmental stress cracking (ESC) is one of the three most important methods for testing the stress crack resistance of plastics, alongside the flexural strip method and the ball or pin indentation method [1]. The standardi..."

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{{Language_sel|LANG=ger|ARTIKEL=Zeitstandzugversuch}}
{{PSM_Infobox}}
<span style="font-size:1.2em;font-weight:bold;">Tensile creep test</span>
__FORCETOC__

==General information==

The creep tensile test for determining resistance to environmental stress cracking (ESC) is one of the three most important methods for testing the stress crack resistance of [[Plastics|plastics]], alongside the flexural strip method and the ball or pin indentation method [1].

The standardised test is carried out in accordance with ISO 22088-2 [2], whereby [[Multipurpose Test Specimen|multipurpose test specimens]] in accordance with ISO 3167 [3] are preferably subjected to a constant tensile force corresponding to a [[Stress|stress]] below the [[Yield Stress|yield stress]], while a defined medium at a selected test temperature is applied.

==Tensile Creep test to determine the stress cracking resistance==

In contrast to the creep test for determining creep behaviour [4], the measurement arrangements used require a climate or media chamber ('''Fig. 1'''), whereby no strain measurement device is necessary due to the required parameters.

[[file:Tensile Creep Test Fig1.jpg]]
{|
|- valign="top"
|width="50px"|'''Fig. 1''':
|width="600px" |Test setup for creep tensile testing in accordance with ISO 22088-2 and measurement of environmental stress cracking
|}

In this tensile creep test, the time and/or stress at which the test [[Specimen|specimen]] breaks is determined.

==Experimental methods and parameters==

Three methods are used to evaluate stress crack behaviour:

* Determination of the tensile stress that leads to [[Fracture|fracture]] after 100 h
* Determination of the fracture time at a constant specified [[Stress|stress]]
* Determination of the dependence of the tensile stress on the fracture time.

This provides the creep tensile strength (fracture stress) σB as a function of the service life (fracture time) tB.

In another variant, the test [[Specimen|specimen]] is deformed as the force increases, i.e. a simple deformation curve is recorded in the aggressive medium.

Further experimental methods and results are described by Brown [5] and Bledzki [6].

==See also==

* [[Creep Behaviour – Determination|Creep behaviour – Determination]]
* [[Tensile Test|Tensile test]]
* [[Tensile Strength|Tensile strength]]
* [[Relaxation Plastics|Relaxation plastics]]

'''References'''

{|
|-valign="top"
|[1]
|Ramsteiner, F.: Bewertung der Spannungsrissbeständigkeit. In: [[Grellmann, Wolfgang|Grellmann, W.]], [[Seidler, Sabine|Seidler, S.]] (Eds.): Kunststoffprüfung. Carl Hanser (2025), 4th Edition, pp. 400/401 (ISBN 978-3-446-44718-9; E-Book: ISBN 978-3-446-48105-3; see [[AMK-Büchersammlung|AMK-Library]] under A 23)
|-valign="top"
|[2]
|ISO 22088-2 (2006-08): Plastics – Determination of Resistance to Environmental Stress Cracking (ESC) ‒ Part 2: Constant Tensile Load Method
|-valign="top"
|[3]
|DIN EN ISO 3167 (2014-08): Plastics – Multipurpose Test Specimens
|-valign="top"
|[4]
|ISO 899-1 (2017-09): Plastics – Determination of Creep Behaviour – Part 1: Tensile Creep
|-valign="top"
|[5]
|Brown, R. P.: Testing Plastics for Resistance to Environmental Stress Cracking. Polymer Testing 1 (1980) 267‒282
|-valign="top"
|[6]
|Bledzki, A. K., Barth, C.: Spannungsrissbeständigkeit von Polycarbonat messen. Materialprüfung 40 (1998) 404‒410
|}

[[category:Stress Cracking Resistance|Stress cracking resistance]]
[[category:Tensile Test|Tensile test]]

Tensile Creep Test - Revision history

Oluschinski at 05:53, 15 December 2025