| Summary: | To understand the fracture behaviors of a new environmentally friendly building material, namely magnesium-based wood-like material (MWM), three-point bending tests were carried out on single-edge notched beams to study its fracture properties. Full-field displacements and crack behaviours of the beams were measured using DIC technique and mode-I fracture properties of the MWM were studied. Crack growth and fracture process zone (FPZ) of the MWM were evaluated, including the variations of the crack length and FPZ. Fracture parameters based on double-K fracture model were determined, and Klcini and Klcun were 0.29 ± 0.04 MPa m1/2 and 0.81 ± 0.10 MPa m1/2, respectively. Fracture energy Gf was 709.25 ± 58.53 N/m and ductility index Du was 269.61 ± 16.09 m-1. The fracture resistance curve KR of the MWM was analyzed, which makes it possible to evaluate the stability of crack propagation at arbitrary moments. Furthermore, a linear threshold deviation method was proposed for identifying the fracture initiation.
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