作者: V. Cannillo , T. Manfredini , M. Montorsi , C. Siligardi , A. Sola
DOI: 10.1016/J.JEURCERAMSOC.2005.10.003
关键词: Fracture mechanics 、 Fracture (geology) 、 Microscale chemistry 、 Forensic engineering 、 Thermal expansion 、 Work (thermodynamics) 、 Combined approach 、 Composite material 、 Materials science 、 Microstructure 、 Scanning electron microscope 、 Materials Chemistry 、 Ceramics and Composites
摘要: Abstract The aim of the present work was determination fracture mechanisms in glass–alumina functionally graded materials (FGMs). investigation performed by means a combined approach based on microscale computational simulations, which provided for an accurate modelling actual FGM microstructure, and experimental analysis. numerical results proved that microstructural defects, such as pores, deeply influenced damage evolution. On contrary, minimization mismatch coefficients thermal expansion ingredient allowed to obtain low residual stresses, did not relevantly affect crack propagation. In order support model, microindentation tests were cross-section specimens experimentally observed paths compared computationally predicted ones.