Application of the miniature small punch test for the mechanical characterization of polymer materials
Visualitza/Obre
10.1016/j.tafmec.2016.10.001
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/99991
Tipus de documentArticle
Data publicació2016-12-01
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
The aim of this paper is to demonstrate the applicability of the Small Punch Test (SPT) in the mechanical characterization of polymers, following previous achievements in metallic materials. For this purpose, different polymers with a wide variation of tensile properties were examined. The applicability of this type of test to characterize polymeric materials is especially interesting when these products are in the form of films, as their greatly reduced thickness enables an easy preparation of the SPT specimens.
All the polymer materials were characterized by means of small punch and tensile tests. The tensile stress-strain curves were compared with the load-displacement SPT curves and the representative SPT parameters were defined accordingly. A good correspondence was found between the tensile elastic modulus and the initial slope of the SPT plot (Slopeini/t), with t being the specimen thickness, and a good correlation was also observed between the tensile yield strength and the SPT Pym/t2 parameter. On the contrary, no corresponding relationship was found to predict the ultimate tensile strength or the failure elongation, since these properties depend greatly on the stress state of the test (uniaxial or biaxial).
CitacióRodríguez, M., Cuesta, I., Maspoch, M., Belzunce Varela, Javier. Application of the miniature small punch test for the mechanical characterization of polymer materials. "Theoretical and applied fracture mechanics", 1 Desembre 2016, vol. 86, p. 78-83.
ISSN0167-8442
Versió de l'editorhttp://www.sciencedirect.com/science/article/pii/S0167844216301914
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
SPT+polymers_manuscrip+final.pdf | 759,2Kb | Visualitza/Obre |