Visco-elastic stress distributions and elastic properties in unidirectional composites with large volume fractions of fibers

Benedikt, B.; Rupnowski, P.; Kumosa, M.

doi:10.1016/s1359-6454(03)00168-x

Cited by 26 publications

(12 citation statements)

References 17 publications

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“…The d 31 piezoelectric coefficients and the relative permittivity values determined by each method are nearly indistinguishable. The higher transverse elastic modulus from the finite element method compared to the Tanaki-Mori method is consistent with other results in the literature when a square arrangement of fibers is used [23]. The Dunn and Taya method and the finite element approach were only compared for the Kevlar tows, however, similar agreement between the two methods is expected for the carbon fiber tows.…”

Section: Micromechanics Resultssupporting

confidence: 87%

Multiscale modeling of PVDF matrix carbon fiber composites

Greminger

Haghiashtiani

2017

Modelling Simul. Mater. Sci. Eng.

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Self-sensing carbon fiber reinforced composites have the potential to enable structural health monitoring that is inherent to the composite material rather than requiring external or embedded sensors. It has been demonstrated that a self-sensing carbon fiber reinforced polymer composite can be created by using the piezoelectric polymer polyvinylidene difluoride (PVDF) as the matrix material and using a Kevlar layer to separate two carbon fiber layers. In this configuration, the electrically conductive carbon fiber layers act as electrodes and the Kevlar layer acts as a dielectric to prevent the electrical shorting of the carbon fiber layers. This composite material has been characterized experimentally for its effective d 33 and d 31 piezoelectric coefficients. However, for design purposes, it is desirable to obtain a predictive model of the effective piezoelectric coefficients for the final smart composite material. Also, the inverse problem can be solved to determine the degree of polarization obtained in the PVDF material during polarization by comparing the effective d 33 and d 31 values obtained in experiment to those predicted by the finite element model. In this study, a multiscale micromechanics and coupled piezoelectricmechanical finite element modeling approach is introduced to predict the mechanical and piezoelectric performance of a plain weave carbon fiber reinforced PVDF composite. The modeling results show good agreement with the experimental results for the mechanical and electrical properties of the composite. In addition, the degree of polarization of the PVDF component of the composite is predicted using this multiscale modeling approach and shows that there is opportunity to drastically improve the smart composite's performance by improving the polarization procedure.

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Section: Micromechanics Resultssupporting

confidence: 87%

Multiscale modeling of PVDF matrix carbon fiber composites

Greminger

Haghiashtiani

2017

Modelling Simul. Mater. Sci. Eng.

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“…While the Mori-Tanaka approach provides for a quick and simple calculation of the bulk composite electromechanical properties, it has been shown that it yields predicted mechanical properties that are relatively low and high for composites with stiffer inclusions and matrix, respectively [33]. This issue could possibly lead to less accurate estimations of the electromechanical moduli, especially for relatively large inclusion volume fractions [37][38][39].…”

Section: Electromechanical Properties Of Compositesmentioning

confidence: 99%

Constitutive modeling of piezoelectric polymer composites

2004

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“…The other source of the errors could be related to the accuracy of the model. The accuracy of the model has been recently studied, for example, by Benedikt et al [16] where it was found that the E/M-T approach provides the same elastic constants as the finite element simulations of the hexagonal unit-cell even for high volume fractions of fibers. It can also be shown that the other micro-mechanical models such as HashinÕs model [33] and the general self-consistent model [34], give exactly the same expression for the longitudinal shear modulus of a unidirectional composite as E/M-T.…”

Section: Discussionmentioning

confidence: 99%