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Indexed by:期刊论文

Date of Publication:2016-01-01

Journal:WOOD RESEARCH

Included Journals:SCIE、EI、Scopus

Volume:61

Issue:6

Page Number:951-958

ISSN No.:1336-4561

Key Words:Glulam; interlaminar fracture; fracture toughness; equivalent elastic modulus

Abstract:Critical strain energy release rate G(C) and stress intensity factor K-C are both defined as fracture toughness, and they can be converted to one another through an equivalent elastic modulus for wood fracture. Whereas the equivalent elastic modulus for interlaminar fracture toughness of glued-laminated timber (glulam) is kept unknown. This paper briefly presented Modes I and II interlaminar fracture toughnesses of glulam, which were obtained from double cantilever beam (DCB) and three-point bending end-notched flexure (3ENF) tests using finite element method (FEM). On the basis of Hankinson-type formula and equivalent elastic modulus of wood fracture, this study developed two empirical expressions to calculate the equivalent elastic moduli for Modes I and II interlaminar fracture of glulam.