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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effective properties evaluation for smart composite materials with imperfect fiber-matrix adhesion

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Author(s):
Tita, Volnei [1] ; de Medeiros, Ricardo [1] ; Marques, Flavio D. [1] ; Moreno, Mariano E. [2]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Aeronaut Engn, BR-13573120 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Ctr Exact Sci & Technol, Dept Mech Engn, BR-13560 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF COMPOSITE MATERIALS; v. 49, n. 29, p. 3683-3701, DEC 2015.
Web of Science Citations: 3
Abstract

A numerical approach is proposed to evaluate the effective properties of piezoelectric fibers embedded in a nonpiezoelectric matrix, considering imperfect contact between fiber and matrix. Firstly, a Representative Volume Element is analyzed via Finite Element Method for different loadings with suitable boundary conditions applied in a unique way. Transversely, isotropic piezoelectric materials with circular and square cross-section fibers are analyzed for square arrangements with different fiber volume fractions as well as with perfect and imperfect contact conditions. The results for circular and square cross-section fibers with perfect contact are compared to the literature data in order to verify the consistency of proposed numerical approach. After that, the results with imperfect contact are discussed, observing the influence of the fiber volume fraction and the level of the imperfection in the fiber-matrix adhesion. Results show that the imperfect contact not only influences the elastic constants, but also the piezoelectric effective values. (AU)

FAPESP's process: 12/01047-8 - DEVELOPMENT OF CRITERION FOR STRENGTH RESIDUAL PREDICTION OF COMPOSITE STRUCTURES DAMAGED BY IMPACT
Grantee:Ricardo de Medeiros
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 12/03645-0 - Computation of average properties in composites under imperfect contact conditions at the fiber-matrix interfaces
Grantee:Volnei Tita
Support Opportunities: Research Grants - Visiting Researcher Grant - International