Mode II fracture characterization of wood using the Four-Point End-Notched Flexure (4ENF) test

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Marcelo F. S. F. de Moura (Author) FEUP; M. A. L. Silva (Author) Other; J. J. L. Morais (Author) Other; N. Dourado (Author) Other

Journal

Title: Theoretical and Applied Fracture Mechanics

Vol. 98

Pages: 23-29

ISSN: 0167-8442

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 1 Citation

ISI Web of Science

Scopus - 9 Citations

INSPEC

Scientific classification

CORDIS: Technological sciences > Engineering > Mechanical engineering

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-00P-NRN

DOI: 10.1016/j.tafmec.2018.09.008

Abstract (EN): This work addresses wood fracture characterization under mode II loading using the Four-Point End-Notched Flexure test. A suitable data reduction scheme based on specimen compliance, beam theory and equivalent crack model was developed with the aim of solving several disadvantages intrinsic to this fracture test. Following this methodology, crack length measurements in experimental tests required in classical procedures becomes unnecessary. Moreover, the execution of additional tests to measure the elastic properties are also unnecessary. The method was applied to experimental load-displacement curves to obtain the corresponding Resistance-curves. A finite element analysis including cohesive zone modelling was conducted to validate the followed procedure. It was verified that numerical load-displacement curve and Resistance-curve are well representative of the overall trends obtained experimentally. These results demonstrate good performance of the method, which makes the Four-Point End-Notched Flexure test a valuable and appealing alternative to conduct wood mode II fracture characterization.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7