Dynamic mechanical properties of spherical inclusions in polymer composite: A self‐consistent approach considering morphology

Shaterzadeh, M.; Gauthier, Catherine; Gérard, Jean‐François; Maï, C.; Pérez, Joseph

doi:10.1002/pc.10138

Cited by 11 publications

(15 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the last decades, different research groups have addressed this issue. In particular, Shaterzadeh et al (1998) studied the temperature dependence of dynamic shear modulus G = G + iG of epoxy matrix composites reinforced by spherical glass spheres and compared their experimental results with predictions of the Generalized Self-Consistent (GSC) model introduced by Christensen and Lo (1979) . For obtaining model predictions, measured dynamic matrix shear modulus was used but it was assumed without justification that the required dynamic Poisson's ratio of the matrix be real valued and have the same temperature dependence as the matrix storage modulus G .…”

Section: Introductionmentioning

confidence: 99%

Time domain finite element estimates of dynamic stiffness of viscoelastic composites with stiff spherical inclusions

Gusev

2016

International Journal of Solids and Structures

View full text Add to dashboard Cite

a b s t r a c tA weighted residual time domain unstructured mesh finite element approach was used to obtain numerical estimates for the dynamic stiffness of medium and high stiffness contrast composites consisting of viscoelastic epoxy matrix filled with stiff spherical inclusions. Both random and regular microstructure composites were studied. It was shown that over the broad temperature and inclusion fraction ranges studied, the generalized self-consistent model ( Christensen and Lo, 1979 ) provided accurate predictions for the effective dynamic stiffness of random composites obeying classical Percus-Yevick hard sphere statistics. Assuming sphere flocculation, we have studied the role of microstructural effects and found that upon increasing stiffness contrast, they become progressively more important for both the effective storage and loss moduli. As a consequence, for the reliable predictions of effective stiffness of high contrast composites with rubber like matrices, one should necessarily use homogenization models accounting not only for the inclusion concentration but also for the finer microstructural details. However, it was also found that for such high stiffness contrast viscoelastic composites, the ratio of their effective storage and loss shear moduli (the damping factor) remains essentially unchanged as compared to that of pure unfilled matrix so it is the invariability of the damping factor that can be viewed as a special signature of underlying micromechanical mechanism of reinforcement.

show abstract

Section: Introductionmentioning

confidence: 99%

Time domain finite element estimates of dynamic stiffness of viscoelastic composites with stiff spherical inclusions

Gusev

2016

International Journal of Solids and Structures

View full text Add to dashboard Cite

show abstract

“…Increasing the temperature from 23 to 80°C, the G of 30% flax fiber (nonwoven) reinforced polypropylene was decreased by about 41.8% [9]. With increasing volume fraction of filler (A-glass beads) from 0 to 50% in the epoxy network, the storage shear modulus at 100 K was increased by about 176%, but the difference of the tan peak is only very small [16]. A higher microvoid content leads to a lower dynamic modulus and a higher damping for woven carbon fiber reinforced epoxy foams [18].…”

Section: Introductionmentioning

confidence: 88%

“…peak associated with the glass transition region and located at 173°C and (2) the relaxation peak at -33°C [16]. The epoxy resin with different polymerisation and polyaddition hardeners exhibited different temperatures of the tan peak [12].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Mechanical Properties of Natural Fiber-Reinforced Epoxy Foams

Błędzki

Zhang

2001

Journal of Reinforced Plastics and Composites

View full text Add to dashboard Cite

In this work, the dynamic mechanical behavior of jute fiber-reinforced epoxy foams was investigated. The influence of various fiber and microvoid content on shear modulus, frequency and log decrement was discussed. Experimental results showed that the 42 vol.% fiber content significantly enhances the shear modulus. The shear modulus and frequency were decreased with increasing microvoid content in the epoxy matrix. The jute fiber as reinforcement affects the temperature of the log decrement peak. Increasing fiber and microvoid content induced a decrease and an increase of the log decrement peak values, respectively.

show abstract

“…Many authors have tried to simulate the viscoelastic properties of high filled particulate composites by taking into account the change in morphological feature of nonuniform distribution of filler and reinforced zone in the matrix 24–30. Gauthier et al24 have simulated the dynamic mechanical behavior of unidirectional composites including 43–68% of E‐glass fibers in an epoxy matrix based on successive applications of the three‐phase self‐consistent analysis proposed originally by Christensen and Lo 31.…”

Section: Introductionmentioning

confidence: 99%

“…In another study, the dynamic mechanical behavior of epoxy/A‐glass bead composites was investigated considering the influence of the volume fraction of the beads and their surface treatments. The self‐consistent analysis was also used to calculate the effective shear modulus of the composite with spherical inclusions 25…”

Section: Introductionmentioning

confidence: 99%

Prediction of viscoelastic behavior of interphase in polypropylene‐chopped rice husk composites for β‐relaxation domain

Ershad‐Langroudi

Razavi‐Nouri

Oromiehie

2010

J of Applied Polymer Sci

View full text Add to dashboard Cite

The effect of chopped rice husk (CRH) content on viscoelastic properties and crystallinity of polypropylene (PP) composites was investigated. Composites containing 0, 20, and 40 part per hundred plastics (php) of CRH into PP were prepared by twin-screw extruder, with maleic anhydride-grafted PP as the coupling agent. The viscoelastic behavior and the crystallinity of these composites have been studied by dynamic mechanical analysis as well as differential scanning calorimetry, respectively. By the incorporation of CRH into PP, the storage modulus (E 0 ) was found to be increased progressively, whereas the mechanical loss factor (tan d) decreased in a nonlinear manner. A self-consistent analysis was proposed for the prediction of viscoelastic response of the interphase between PP matrix and CRH particles. A three-phase model was applied in a reverse mode, and the viscoelastic behavior of the interphase was extracted and compared with the unfilled matrix. Differential scanning calorimetry results indicated that CRH influences crystallization temperature as well as the degree of crystallinity of the composites. An entrapped polymer within CRH filler and PP matrix was detected by scanning electron microscope, which can be attributed to the interfacial layer with a good adhesion between the main components.

show abstract

Dynamic mechanical properties of spherical inclusions in polymer composite: A self‐consistent approach considering morphology

Cited by 11 publications

References 21 publications

Time domain finite element estimates of dynamic stiffness of viscoelastic composites with stiff spherical inclusions

Time domain finite element estimates of dynamic stiffness of viscoelastic composites with stiff spherical inclusions

Dynamic Mechanical Properties of Natural Fiber-Reinforced Epoxy Foams

Prediction of viscoelastic behavior of interphase in polypropylene‐chopped rice husk composites for β‐relaxation domain

Contact Info

Product

Resources

About