scholarly journals New constitutive modeling for time-dependent mechanical behavior of polymers close to glass transition: Fundamentals and experimental validation

2012 ◽  
Vol 125 (6) ◽  
pp. 4390-4401 ◽  
Author(s):  
Noëlle Billon
Keyword(s):  
Glass Transition ◽  
Mechanical Behavior ◽  
Constitutive Modeling ◽  
Experimental Validation ◽  
Time Dependent

Effect of reduced graphene oxide on mechanical behavior of an epoxy adhesive in glassy and rubbery states

2021 ◽  
pp. 002199832110316
Author(s):  
Ata Khabaz-Aghdam ◽  
Bashir Behjat ◽  
EAS Marques ◽  
RJC Carbas ◽  
Lucas FM da Silva ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ambient Temperature ◽  
Mechanical Behavior ◽  
Reduced Graphene Oxide ◽  
Epoxy Adhesive ◽  
Ultimate Strain ◽  
Reduced Graphene

The mechanical behavior of an adhesive, in neat state and reinforced with up to 0.5 wt% of reduced graphene oxide (RGO) was investigated here. Tests were done at temperatures between the ambient temperature and the glass transition temperature ( Tg[Formula: see text] of the adhesive. Using a metal mold, cured plates of the neat and RGO reinforced epoxy adhesive were prepared. The adhesive powder and the bulk dumbbell-shaped specimens, obtained from cured adhesive plates, were subjected to differential scanning calorimetry (DSC) and tensile tests, respectively, to obtain the Tg as well as mechanical properties of the adhesives. The results indicated that adding RGO up to 0.5 wt% increased the glass transition temperature, the modulus of elasticity, and the strength of the adhesive. It was found that the presence of RGO reduced the adhesive’s strain at the break at the ambient temperature. However, at high temperatures, near the Tg, the ultimate strain of RGO-reinforced adhesives decreased slightly when compared to the ultimate strain of the neat specimens. This explains the reduction in toughness at ambient temperature obtained by adding RGO and the increase at high temperatures. Finally, the failure morphology of the neat and RGO-reinforced adhesive specimens was investigated using microscopic imaging of the specimens’ failure cross-sections, which supported and justified the experimental observations.

Mechanical Behavior of a Polymer at Temperatures through the Glass Transition Temperature

1958 ◽  
Vol 29 (10) ◽  
pp. 1390-1394 ◽  
Author(s):  
J. R. Stevens ◽  
D. G. Ivey
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Mechanical Behavior

Mechanical behavior of Ti–6Al–4V at high and moderate temperatures—Part II: constitutive modeling

2002 ◽  
Vol 326 (2) ◽  
pp. 306-316 ◽  
Author(s):  
R.C. Picu ◽  
A. Majorell
Keyword(s):  
Mechanical Behavior ◽  
Constitutive Modeling

Constitutive modeling for the mechanical behavior of rubber with filler particles

2021 ◽  
Author(s):  
Sankalp Gour ◽  
Deepu Kumar Singh ◽  
Deepak Kumar ◽  
Vinod Yadav
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
Mechanical Behavior ◽  
Experimental Observation ◽  
Continuum Mechanics ◽  
Constitutive Modeling ◽  
Carbon Nanoparticles ◽  
Material Behavior ◽  
Experimental Results ◽  
Filler Particles

Abstract The present study deals with the constitutive modeling for the mechanical behavior of rubber with filler particles. An analytical model is developed to predict the mechanical properties of rubber with added filler particles based on experimental observation. To develop the same, a continuum mechanics-based hyperelasticity theory is utilized. The model is validated with the experimental results of the chloroprene and nitrile butadiene rubbers filled with different volume fractions of carbon black and carbon nanoparticles, respectively. The findings of the model agree well with the experimental results. In general, the developed model will be helpful to the materialist community working in characterizing the material behavior of tires and other rubber-like materials.

scholarly journals Time-Dependent Space-Averaged Constitutive Modeling of Cracked Reinforced Concrete Subjected to Shrinkage and Sustained Loads

2006 ◽  
Vol 4 (1) ◽  
pp. 193-207 ◽  
Author(s):  
Koichi Maekawa ◽  
Masoud Soltani ◽  
Tetsuya Ishida ◽  
Yutaka Itoyama
Keyword(s):  
Reinforced Concrete ◽  
Constitutive Modeling ◽  
Time Dependent ◽  
Sustained Loads

Constitutive Modeling of Biaxial Mechanical Response of Arteries Subjected to Gradual Elastin Degradation

2013 ◽  
Author(s):  
Shahrokh Zeinali-Davarani ◽  
Ming-Jay Chow ◽  
Raphaël Turcotte ◽  
Katherine Yanhang Zhang
Keyword(s):  
Tensile Test ◽  
Mechanical Behavior ◽  
Test Data ◽  
Constitutive Modeling ◽  
Mechanical Response ◽  
Collagen Fibers ◽  
Biaxial Tensile Test ◽  
Elastin Degradation ◽  
Adaptive Processes ◽  
Tensile Test Data

The passive mechanical response of arteries is believed to be mainly dominated by elastin and collagen fibers. Many arterial diseases are accompanied by significant changes in quantity and as well as the microstructure of these constituents due to the mechanical and biological adaptive processes. In this study we focus on the biaxial tensile test data of elastase-treated porcine aortic tissues [1]. We study the mechanical behavior of aortic tissues under gradual elastin degradation through constitutive modeling and associate the mechanical response with the microstructure of collagen observed in the microscopic images of fresh and digested tissues.

scholarly journals Time-dependent mechanical behavior of lime-mortar masonry

2010 ◽  
Vol 44 (1) ◽  
pp. 29-42 ◽  
Author(s):  
Els Verstrynge ◽  
Luc Schueremans ◽  
Dionys Van Gemert
Keyword(s):  
Mechanical Behavior ◽  
Time Dependent ◽  
Lime Mortar
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