Trouser Specimen

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Trouser specimen

The trouser specimen is used for testing the elastomers and its determination of the tear propagation resistance with the tearing test according to ISO 34-1 [1, 2]. Besides the trouser specimen, the CT specimen is also used [3].

Figure:

Trouser specimen for evaluation determination of the tear propagation resistance of elastomers

The tearing energy is defined for the trouser specimen [4]:

T={\frac {W_{0}A_{0}-2\lambda F}{B}}

with

W₀		energy density of the specimen
A₀		fracture surface
λ		elongation of the entire specimen
F		force
B		specimen thickness
T		free surface energy per unit area.

[1]	ISO 34-1 (2022-06): Rubber, Vulcanized or Thermoplastic – Determination of Tear Strength – Part 1: Trouser, Angle and Cresent Test Pieces
[2]	Grellmann, W., Seidler, S. (Eds.):Polymer Testing. Carl Hanser Munich (2022) 3rd. Edition pp. 124/125 (ISBN 978-3-446-44350-1; see AMK-Library under A 22)
[3]	ASTM D 624 (2000, reapproved 2020): Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers
[4]	Grellmann, W., Reincke, K.: Technical Material Diagnostics – Fracture Mechanics of Filled Elastomer Blends. In: Grellmann, W., Heinrich, G., Kaliske, M., Klüppel, M., Schneider, K., Vilgis, T. (Eds.): Fracture Mechanics and Statistical Mechanics of Reinforced Elastomeric Blends. Springer Berlin Heidelberg (2013) pp. 227–268 (ISBN 978-3-642-37909-3; see AMK-Library under A 14)
[5]	Maanaoui, H. E.: Lebensdauer-Vorhersage für Elastomerbauteile mit variabler Vorspannung und Temperaturabhängigkeit. Gottfried Wilhelm Leibniz Universität Hannover, Fakultät für Maschinenbau. Hannover (2022) https://www.repo.uni-hannover.de/bitstream/handle/123456789/12765/El_Maanaoui_Hamid.pdf?sequence=3&isAllowed=y (access: 03.03.2023)

See also