Effect of temperature on the fracture toughness of wood under mode I quasi-static loading

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

Authors

Marcelo F. S. F. de Moura (Author) FEUP; N. Dourado (Author) Other

Journal

Title: Construction and Building Materials

Vol. 223

Pages: 863-869

ISSN: 0950-0618

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

ISI Web of Science

Scopus - 2 Citations

Scientific classification

CORDIS: Technological sciences > Engineering > Mechanical engineering

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-00Q-V6H

DOI: 10.1016/j.conbuildmat.2019.07.036

Abstract (EN): A numerical and experimental study was performed to evaluate the critical strain energy release rate of wood under mode I loading (G(IC)), in the range of 30 degrees C and 110 degrees C. Pinus pinaster Ait. was employed as testing material, using the double cantilever beam (DCB) test, promoting fracture in the RL fracture system. The determination of Resistance-curves was accomplished using an equivalent crack length method, which does not require crack length measurement in the course of the experimental test. This aspect was found crucial since wood develops a non-negligible fracture process zone (FPZ) ahead of the crack tip, and the experiments required the use of a climate chamber with limited dimensions for visual access. It was observed that the critical energy release rate is affected by temperature within the referred range. Cohesive laws were also determined to replicate the experimental response as a function of the tested temperatures.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7