Journal Published Online: 23 April 2018
Volume 46, Issue 5

Comparison of Mode II Fracture Toughness Test Methods for Wood and Wood-Based Composites



Currently, there is no standard test methodology for the evaluation of Mode II fracture toughness, GII, for wood and wood composite materials. This article measured the Mode II fracture toughness of solid wood, laminated veneer lumber (LVL), and oriented strand lumber (OSL) using the three-end notched flexure (three-ENF) test and the compact shear (CS) test. Fracture toughness values from the three-ENF test were similar for the solid wood and LVL material, demonstrating similar failures of specimens. The OSL materials had significantly lower fracture toughness values and exhibited exceedingly brittle failure. The CS test was not considered to be a practical method for measurement of Mode II fracture toughness because of the lack of stable crack propagation.

Author Information

Mohamadzadeh, Milad
SK&A, MD Structural Engineers, Potomac, MD, USA
Hindman, Daniel
Sustainable Biomaterials, Virginia Tech, Blacksburg, VA, USA
Pages: 12
Price: $25.00
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Stock #: JTE20160555
ISSN: 0090-3973
DOI: 10.1520/JTE20160555