[HTML][HTML] Tensile testing of polymers: Integration of digital image correlation, infrared thermography and finite element modelling

P Song, A Trivedi, CR Siviour - Journal of the Mechanics and Physics of …, 2023 - Elsevier
Tensile tests are often used as part of material characterisation strategies; however, the
observed deformation is often complex, and it can be difficult to distinguish the underlying …

[HTML][HTML] Pressure drop non-linearities in material extrusion additive manufacturing: A novel approach for pressure monitoring and numerical modeling

S de Vries, T Schuller, FJ Galindo-Rosales… - Additive Manufacturing, 2024 - Elsevier
Abstract Fused Filament Fabrication is an additive manufacturing technique in which molten
thermoplastic polymers are extruded through a nozzle. Therefore, the interplay between the …

[HTML][HTML] Analysis of the importance of shear-induced elastic stresses in material extrusion

T Schuller, P Fanzio, FJ Galindo-Rosales - Additive Manufacturing, 2022 - Elsevier
Material extrusion is an additive manufacturing process in which material is selectively
dispensed through a nozzle. In this work, we are focused on fused filament fabrication (FFF) …

Illustrating the molecular origin of mechanical stress in ductile deformation of polymer glasses

X Li, J Liu, Z Liu, M Tsige, SQ Wang - Physical review letters, 2018 - APS
New experiments show that tensile stress vanishes shortly after preyield deformation of
polymer glasses while tensile stress after postyield deformation stays high and relaxes on …

How and why polymer glasses lose their ductility due to plasticizers

Y Zhao, J Liu, X Li, Y Lu, SQ Wang - Macromolecules, 2017 - ACS Publications
Tensile extension tests have been carried out to examine mechanical responses of polymer
glasses under the influence of small molecule additives that plasticize the polymers by …

Experiments-inspired molecular modeling of yielding and failure of polymer glasses under large deformation

SQ Wang, S Cheng - Polymer Glasses, 2016 - taylorfrancis.com
In comparison with melt rheology that deals with mechanical behavior above the glass
transition temperature Tg, mechanics of polymer glasses has extra degrees of complexity [1 …

Deformation behavior of thermoplastic elastomer specimens: Observation of the strain behavior in a wide range of tensile speeds

Y Isogai, A Yokoyama, TTB Nguyen… - Polymer Engineering …, 2018 - Wiley Online Library
During the tensile testing of thermoplastic elastomers it is difficult to obtain true stress–strain
curves because of necking phenomenon. Thus, we conducted a high‐speed tensile testing …

Pressure drop non-linearities in Fused Filament Fabrication

S de Vries, T Schuller, FJ Galindo-Rosales… - arXiv preprint arXiv …, 2023 - arxiv.org
Fused filament fabrication (FFF) is an additive manufacturing technique in which molten
thermoplastic polymers are extruded through a nozzle. Therefore, the interplay between the …

Effects of Molecular Weight Reduction on Brittle–Ductile Transition and Elastic Yielding Due to Noninvasive γ Irradiation on Polymer Glasses

P Lin, Q Xu, S Cheng, X Li, Z Zhao, S Sun… - …, 2017 - ACS Publications
By exposing specimens to the γ irradiation, we show that polymer glasses including
bisphenol A polycarbonate (PC) and poly (methyl methacrylate)(PMMA) turn from ductile to …

MOLECULAR DYNAMICS SIMULATION STUDY OF NONLINEAR MECHANICAL BEHAVIOR FOR POLYMER GLASSES AND POLYMER RHEOLOGY

Y Zheng - 2020 - rave.ohiolink.edu
Polymeric materials obtain great commercial success due to their variety of mechanical
characteristics. Despite the rich variety of macroscopic phenomena, the microscopic …