SORIN, Edouard; COUREAU, Jean-Luc; PÉREZ, Cédric

doi:10.1016/j.engfracmech.2022.108472

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SORIN, Edouard

Institut de Mécanique et d'Ingénierie [I2M]

COUREAU, Jean-Luc

Institut de Mécanique et d'Ingénierie [I2M]

PÉREZ, Cédric
Institut de Mécanique et d'Ingénierie [I2M]

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Engineering Fracture Mechanics. 2022-06, vol. 269, p. 108472

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This study provides detailed data on the quasi-brittle behaviour of two softwood species, the Maritime Pine (Pinus pinaster.) and the Spruce (Picea abies.), by using R-curves. The methodology of characterization of the R-curve used in this article is an improvement of the method presented by Lespine (2007). This method is automated and based on the measurement error made on 𝐺��𝑅��(𝛥��𝑎��𝑢��) . And the same geometry to characterize the crack propagation in mode I and in mode II. The influence of the crack plane orientation and the density on the fracture mechanisms is investigated for both species and shows a dependency of the R-curve parameters of the Maritime Pine in mode I to the crack plane orientation. The differences between Spruce and Maritime Pine are highlighted. This demonstrate the importance to characterize the quasi-brittle behaviour of each wood species in order to provide a useful data base for engineers.< Réduire

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R-curve

Wood

Mode I

Mode II

Fracture mechanics

Quasi-brittle

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Mode I and II R-curves characterization of the Maritime Pine and Spruce under the same geometry

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