RT info:eu-repo/semantics/article
T1 Viscoelasticity and the Small Punch Creep Recovery Test: Numerical analysis and experimental tests on the applicability for polyvinyl chloride (PVC)
A1 Calaf Chica, José
A1 Bravo Díez, Pedro Miguel
A1 Preciado Calzada, Mónica
K1 Small punch test
K1 SPT
K1 Viscoelasticity
K1 Polymer
K1 PVC
K1 Resistencia de materiales
K1 Strength of materials
K1 Ensayos (Tecnología)
K1 Testing
AB Research on the Small Punch Test (SPT) has been mainly focused on metallic alloys, with limited investigations in polymeric materials. The miniature size of the SPT eases and motivates its use in biomedical applications, like the mechanical characterization of surgical implants made of different polymers. It is noted that the aim of these publications was focused on mechanical properties inherent to the tensile test (yield strength, ultimate tensile strength, Young's modulus, etc.), but the applicability of this miniature test for the estimation of singular polymer properties like viscoelasticity or viscoplasticity has not been addressed.The aim of this paper was the assessment of SPT as a characterization test for the viscoelastic properties of polymers. To analyze this applicability, numerical FEM simulations of hypothetical materials were performed and a novel Small Punch Creep Recovery Test (SPCRT) was designed. These FEM simulations were verified with experimental compressive creep recovery tests and SPCRTs for specimens made of polyvinyl chloride (PVC). The results showed that SPCRTs accurately estimated the viscoelastic properties for materials with non-stress-dependent viscoelastic properties. In the case of materials with stress-dependent viscoelastic properties, the SPCRT would estimate a mean or intermediate value of these stress-dependent viscoelastic properties.
PB Elsevier
SN 0167-6636
YR 2021
FD 2021-10
LK http://hdl.handle.net/10259/6216
UL http://hdl.handle.net/10259/6216
LA eng
DS Repositorio Institucional de la Universidad de Burgos
RD 11-dic-2024