Sequential homogenization in Laplace Domain for viscoelastic properties of composites with functionally graded interphase

2020 ◽  
pp. 113266
Author(s):  
Shunuan Liu ◽  
Yi Cheng ◽  
Biao Liang ◽  
Hui Cheng ◽  
Bin Luo ◽  
...  
Keyword(s):  
Viscoelastic Properties ◽  
Functionally Graded ◽  
Laplace Domain ◽  
Properties Of Composites

The Statistical Two-Scale Method for Predicting Viscoelastic Properties of Composites with Consistent Random Distribution of Particles

2014 ◽  
Vol 697 ◽  
pp. 3-6 ◽  
Author(s):  
Yang Zhang ◽  
Yu Feng Nie ◽  
Ya Tao Wu
Keyword(s):  
Viscoelastic Properties ◽  
Laplace Transformation ◽  
Random Distribution ◽  
Relaxation Modulus ◽  
Least Square ◽  
Viscoelastic Problem ◽  
Laplace Domain ◽  
Scale Method ◽  
Linear Viscoelastic ◽  
Properties Of Composites

This study presents a statistical two-scale method to predict the viscoelastic properties of composite materials with consistent random distribution of particles. The explicit formulation for predicting the effective viscoelastic relaxation modulus is given. At first, the Laplace transformation is used to the linear viscoelastic problem, the effective generalized relaxation modulus in Laplace domain for composites is derived. Then, the effective relaxation modulus in time domain is obtained by the least-square and inverse Laplace transformation. At the end of this paper, some numerical examples are given to validate that the presented method is feasible and effective.

Viscoelastic Properties of Multi Walled Carbon Nanotube/Epoxy Composites at the Different Nanotube Content

2011 ◽  
Vol 13 ◽  
pp. 33-39 ◽  
Author(s):  
Arash Montazeri ◽  
Alireza Khavandi ◽  
Jafar Javadpour ◽  
Abbas Tcharkhtchi
Keyword(s):  
Carbon Nanotube ◽  
Viscoelastic Properties ◽  
Epoxy Composite ◽  
Viscoelastic Behavior ◽  
Molding Process ◽  
Cole Diagram ◽  
Multi Walled Carbon Nanotube ◽  
Viscoelastic Modeling ◽  
Good Agreement ◽  
Properties Of Composites

The viscoelastic properties of composites multi walled carbon nanotube / epoxy at different weight fractions (0.1, 0.5 and 1wt %) were evaluated by performing dynamic mechanical thermal analysis (DMTA) test. The MWCNT/ epoxy composite were fabricated by sonication and a cast molding process. The results showed that addition of nanotubes to epoxy had a significant effect on the viscoelastic properties. However, the use of 0.5wt% increased the viscoelastic properties more significantly. Concerning viscoelastic modeling, the COLE-COLE diagram has been plotted by the result of DMTA tests. These results show a good agreement between the Perez model and the viscoelastic behavior of the composite.

Viscoelastic properties of composites of calcium alginate and hydroxyapatite

2008 ◽  
Vol 19 (6) ◽  
pp. 2417-2421 ◽  
Author(s):  
I. Wands ◽  
D. E. T. Shepherd ◽  
D. W. L. Hukins
Keyword(s):  
Viscoelastic Properties ◽  
Calcium Alginate ◽  
Properties Of Composites

THERMOPIEZOELECTRIC ANALYSIS OF A FUNCTIONALLY GRADED PIEZOELECTRIC MEDIUM

2011 ◽  
Vol 03 (01) ◽  
pp. 47-68 ◽  
Author(s):  
A. H. AKBARZADEH ◽  
M. H. BABAEI ◽  
Z. T. CHEN
Keyword(s):  
Thermal Relaxation ◽  
Generalized Thermoelasticity ◽  
Functionally Graded ◽  
Piezoelectric Medium ◽  
Inversion Method ◽  
Laplace Domain ◽  
Decoupling Method ◽  
The Laplace Transform ◽  
Functionally Graded Piezoelectric ◽  
The Time Domain

The thermopiezoelectrical behavior of a functionally graded piezoelectric medium (FGPM) is investigated in the present work. For the special case, the dynamic response of an FGPM rod excited by a moving heat source is studied. The material properties of the FGPM rod are assumed to vary exponentially through the length, except for specific heat and thermal relaxation time which are held constant for simplicity. The governing differential equations in terms of displacement, temperature, and electric potential are obtained in a general form that includes coupled and uncoupled thermoelasticity. The coupled formulation considers classical thermoelasticity as well as generalized thermoelasticity. Employing the Laplace transform and successive decoupling method, unknowns are given in the Laplace domain. Employing a numerical Laplace inversion method, the solutions are gained in the time domain. Numerical examples for the transient response of the FGPM rod are displayed to clarify the differences among the results of the generalized, coupled, and uncoupled theories for various nonhomogeneity indices. The results are verified with those reported in the literature.

scholarly journals Effect of granular characteristics on the viscoelastic properties of composites of amylose and waxy starches

2008 ◽  
Vol 22 (1) ◽  
pp. 164-173 ◽  
Author(s):  
Ting-Jang Lu ◽  
Chi-Shen Duh ◽  
Jheng-Hua Lin ◽  
Yung-Ho Chang
Keyword(s):  
Viscoelastic Properties ◽  
Properties Of Composites

Effect of coupling agents on the crystallinity and viscoelastic properties of composites of rice hull ash-filled polypropylene

2007 ◽  
Vol 42 (24) ◽  
pp. 10219-10227 ◽  
Author(s):  
Roya Khalil ◽  
Andrew George Chryss ◽  
Margaret Jollands ◽  
Satinath Bhattacharya
Keyword(s):  
Viscoelastic Properties ◽  
Rice Hull ◽  
Coupling Agents ◽  
Rice Hull Ash ◽  
Properties Of Composites
Sign in / Sign up

Export Citation Format

Share Document