Characterization of ceiba plywood delamination in mode i using an energetic criterion
To characterize the delamination process of Ceiba plywood, an energy approach was used. This approach considers that crack propagation is a phenomenon of energy dissipation. The fundamental parameter of this approach is the energy release rate (G). To determine this parameter in pure mode I (GI), a Double Cantilever Beam test (DCB) was deployed. The critical energy release rate in pure mode I (GIC) is determined using four approaches, namely Beam Theory, Berry compliance law, Modified Beam Theory and the Compliance Calibration method. Then, a resistance curve of Ceiba plywood was determined according to each approach. Finally, a fracture surfaces analysis was discussed to understand the nature and types of fracture.