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Investigation of wood fracture toughness using mode II fracture (shearing)

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The test results of fracture toughness for three wood species, such as pine, alder and birch are presented. Examination of fracture toughness is carried out using mode II fracture (shearing). Values of the stress intensity factor,K IIc, are determined for the three main anatomic directions of wood. Microstructural tests of particular wood species, performed on specimens along the three main anatomic directions of wood, are discussed. Qualitative relationships are found to exist between the microstructure of wood and the obtained values of the stress intensity factor,K IIc.

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Prokopski, G. Investigation of wood fracture toughness using mode II fracture (shearing). J Mater Sci 30, 4745–4750 (1995).

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