Interlaminar fracture characterization of a carbon-epoxy composite in Pure Mode II

• Type: Article in International Conference Proceedings Book
• Date: 2009

Authors

R. D. S. G. Campilho (Author) FEUP; M. F. S. F de Moura (Author) FEUP; A. M. G. Pinto (Author) FEUP; D. A. Ramantani (Author) FEUP

Conference proceedings International

Title: V International Materials Symposium MATERIAIS 2009

Pages: 1-6

V International Materials Symposium MATERIAIS 2009 (XIV meeting of SPM - Sociedade Portuguesa de Materiais)

Instituto Superior Técnico, Lisbon, Portugal, 5-8 April 2009

Indexing

ISI Web of Science

Scopus

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

DOI: 10.4028/www.scientific.net/MSF.636-637.1518

Abstract (EN): 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 nonnegligible, 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 values of GIIc inputted 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6