Paper Title:
Interlaminar Fracture Characterization of a Carbon-Epoxy Composite in Pure Mode II
  Abstract

The interlaminar fracture toughness in pure mode II (GIIc) of a Carbon-Fibre Reinforced Plastic (CFRP) composite is characterized experimentally and numerically in this work, using the End-Notched Flexure (ENF) fracture characterization test. The value of GIIc was extracted by a new data reduction scheme avoiding the crack length measurement, named Compliance-Based Beam Method (CBBM). This method eliminates the crack measurement errors, which can be non-negligible, and reflect on the accuracy of the fracture energy calculations. Moreover, it accounts for the Fracture Process Zone (FPZ) effects. A numerical study using the Finite Element Method (FEM) and a triangular cohesive damage model, implemented within interface finite elements and based on the indirect use of Fracture Mechanics, was performed to evaluate the suitability of the CBBM to obtain GIIc. This was performed comparing the input values of GIIc in the numerical models with the ones resulting from the application of the CBBM to the numerical load-displacement (P-) curve. In this numerical study, the Compliance Calibration Method (CCM) was also used to extract GIIc, for comparison purposes.

  Info
Periodical
Materials Science Forum (Volumes 636-637)
Edited by
Luís Guerra ROSA and Fernanda MARGARIDO
Pages
1518-1524
DOI
10.4028/www.scientific.net/MSF.636-637.1518
Citation
R. D.S.G. Campilho, M. F.S.F. de Moura, A.M.G. Pinto, D. A. Ramantani, "Interlaminar Fracture Characterization of a Carbon-Epoxy Composite in Pure Mode II", Materials Science Forum, Vols. 636-637, pp. 1518-1524, 2010
Online since
January 2010
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$32.00
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