Summary
For studies on wood structures it is important to have a reliable specimen for mixed mode loading (I+II) of a crack. A new type of specimen derived from the compact tension shear (CTS) specimen proposed by Richard for isotropic materials has been studied. A finite element modelization for pine (Pinus pinaster) gives calibrations in the RL, TL and TR directions. Fracture experiments show a fair agreement between stress intensity factors obtained by calibrations and by the compliance method.
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Valentin, G., Caumes, P. Crack propagation in mixed mode in wood: a new specimen. Wood Sci.Technol. 23, 43–53 (1989). https://doi.org/10.1007/BF00350606
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DOI: https://doi.org/10.1007/BF00350606