Asymptotic modulus results for composites containing randomly oriented fibers

Christensen, R.M.

doi:10.1016/0020-7683(76)90036-6

Cited by 38 publications

(15 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other authors have considered the effects of fibre orientation distribution [15][16][17] and based their analyses on slightly different models; in all cases the output values are numerically very close. Using the approach of Krenchel (Eq.…”

Section: Fibre Orientationmentioning

confidence: 89%

See 1 more Smart Citation

Plant fibre composites – porosity and stiffness

Madsen

Thygesen

Lilholt

2009

Composites Science and Technology

160

114

View full text Add to dashboard Cite

Section: Fibre Orientationmentioning

confidence: 89%

“…The only unknown parameters in the model Eqs. (16) and (17) are then the fibre correlated porosity constant (a pf ) and the maximum obtainable fibre volume fraction (V f max ). These two parameters were adjusted to be 0.121 for a pf and 0.407 for V f max to obtain the best possible fit of the experimental stiffness data.…”

Section: Gl/ppmentioning

confidence: 99%

Plant fibre composites – porosity and stiffness

Madsen

Thygesen

Lilholt

2009

Composites Science and Technology

160

114

View full text Add to dashboard Cite

“…Figure 5 compares the experimentally measured Young’s modulus of CNFs/epoxy nanocomposites with the values predicted using Christensen’s model [25]. The predicted values given by Christensen’s model showed a good agreement with the experimental observation of E c except at CNFs contents above 1.0 wt % CNFs.…”

Section: Resultsmentioning

confidence: 52%

“…To better understand the significance of fillers/fibers on the mechanical properties of polymer composites, a number of models exist in the literature [23,24,25]. We further examine here the model by Christensen [24] to predict the elastic modulus of CNFs/epoxy nanocomposites:

E_{c} = \frac{V_{f}}{6} E_{f} + [\frac{1}{1 - V_{f}} (1 + \frac{V_{f}}{4} + \frac{{V_{f}}^{2}}{6}) E_{m}]

where E c , E m and E f are the moduli of composite, matrix and filler respectively and V f is the filler/fiber volume fraction.…”

Section: Resultsmentioning

confidence: 99%

Monitoring Damage Propagation in Glass Fiber Composites Using Carbon Nanofibers

et al. 2016

View full text Add to dashboard Cite

In this work, we report the potential use of novel carbon nanofibers (CNFs), dispersed during fabrication of glass fiber composites to monitor damage propagation under static loading. The use of CNFs enables a transformation of the typically non-conductive glass fiber composites into new fiber composites with appreciable electrical conductivity. The percolation limit of CNFs/epoxy nanocomposites was first quantified. The electromechanical responses of glass fiber composites fabricated using CNFs/epoxy nanocomposite were examined under static tension loads. The experimental observations showed a nonlinear change of electrical conductivity of glass fiber composites incorporating CNFs versus the stress level under static load. Microstructural investigations proved the ability of CNFs to alter the polymer matrix and to produce a new polymer nanocomposite with a connected nanofiber network with improved electrical properties and different mechanical properties compared with the neat epoxy. It is concluded that incorporating CNFs during fabrication of glass fiber composites can provide an innovative means of self-sensing that will allow damage propagation to be monitored in glass fiber composites.

show abstract

“…For the two dimensional case (i.e. fibres aligned in the plane of the laminate only) this gives in simplified form (Christensen, 1976).…”

Section: Christensen Equationmentioning

confidence: 99%

Investigation of mechanical properties of epoxy resins and random fibre epoxy systems by means of destructive and non-destructive tests

Prassianakis¹,

Kytopoulos²,

Sideridis³

2006

IJMPT

View full text Add to dashboard Cite

In the present experimental work an epoxy resin and a random fibre reinforced epoxy resin system was studied, for the determination of some mechanical properties using destructive and non-destructive tests. Firstly the velocities of elastic waves and the acoustic attenuation coefficient were evaluated. Then, using these quantities, the elastic modulus, E, the shear modulus, G, the Poisson ratio, #, and the damage parameter D were evaluated. These properties were correlated with the corresponding properties determined for same materials by using destructive tests. Finally, for an epoxy resin system, the effect of the plasticiser content and the fibres on the moisture absorption behaviour were investigated. In this context, it was shown that the moisture absorption test based on diffusion (mass transport) mechanisms can be used as a non-destructive test for`intrinsic' (microstructural) damage evaluations in the polymeric system.Reference to this paper should be made as follows: Prassianakis, I.N., Kytopoulos, V. and Sideridis, E. (2006)`Investigation of mechanical properties of epoxy resins and random fibre epoxy systems by means of destructive and non-destructive tests', Int.

show abstract

Asymptotic modulus results for composites containing randomly oriented fibers

Cited by 38 publications

References 3 publications

Plant fibre composites – porosity and stiffness

Plant fibre composites – porosity and stiffness

Monitoring Damage Propagation in Glass Fiber Composites Using Carbon Nanofibers

Investigation of mechanical properties of epoxy resins and random fibre epoxy systems by means of destructive and non-destructive tests

Contact Info

Product

Resources

About