Mixed mode I¿+¿II interlaminar fracture characterization of carbon-fibre reinforced polyamide composite using the Single-Leg Bending test

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Marcelo F. S. F. de Moura (Author) FEUP; Raul D. F. Moreira (Author) FEUP; João Pedro C. Reis (Author) FEUP; Filipe G. A. Silva (Author) FEUP

Journal

Title: Materials Today Communications

Vol. 19

Pages: 476-481

ISSN: 2352-4928

Publisher: Elsevier

Indexing

ISI Web of Science

Scopus - 4 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

CORDIS: Technological sciences > Engineering > Mechanical engineering

Other information

Authenticus ID: P-00Q-M45

DOI: 10.1016/j.mtcomm.2019.05.006

Abstract (EN): In this work, interlaminar fracture characterization of carbon-fibre reinforced polyamide composite under mixed-mode I + II loading was performed. The single-leg bending (SLB) test was used owing to its simplicity. An equivalent crack length procedure was employed in order to get the Resistance-curve only using data from the load-displacement curve. A partition method based on beam theory was also used to obtain the components of the fracture energy during crack propagation. The obtained results points to the linear energetic criterion as being appropriate to describe the fracture behaviour of this thermoplastic composite. A numerical analysis considering cohesive zone modelling was performed aiming to validate the experimental procedure and the conclusions ensuing from the experimental results. An energetic based mixed-mode I + II cohesive zone model considering a trapezoidal softening law was employed owing to high material toughness. The numerical results were verified to represent well the observed experimental trends, thus validating all the procedure developed in this work concerning fracture characterization under mixed-mode I + II loading of thermoplastic composites. © 2019 Elsevier Ltd

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6