Josip Kačmarčik

This article focused on the experimental and statistical analysis of the mechanical properties of dog-bone samples manufactured by fused deposition modelling (FDM). Two identical materials were examined, i.e., Onyx with carbon fiber but from differen...

3D scanning and 3D printing finds more and more application in digitalization, presentation and replicas making of different artworks. In this paper the capabilities of these technologies are represented on the example of a selected sculpture from Smrike national monument. Polygonal 3D model of the sculpture is made by using a manual 3D scanner. Using the obtained 3D model, twelve scaled-down replicas of the sculptureare made by FDM 3D print technology. Different technical details and parameters, as well as processing in different software are presented and described.

Mixed-mode fracture in delamination test utilizing double cantilever specimens loaded with bending moments is investigated in the paper. FEM simulations are performed using cohesive zone model where different configurations of test loadings and two critical fracture energy values, ie. two fracture process zone lengths, are considered. Fracture energy partitioning is performed and fracture mode-mixity is determined using simulation results, i.e. mode I and mode II fracture parts in total fracture energy are calculated. The fracture mode-mixities numerically determined for different configurations are compared with results obtained using two analytical fracture energy partitioning theories, according to Williams and to Hutchinson and Suo. An excellent agreement between numerical and the analytical results is observed.