Influence of the Interfacial Transition Zone on crack behavior in a matrix/aggregate system

0498923 - ÚFM 2020 RIV NL eng C - Conference Paper (international conference)
Malíková, Lucie - Klusák, Jan
Influence of the Interfacial Transition Zone on crack behavior in a matrix/aggregate system.
ECF22 - Loading and Environmental effects on Structural Integrity. Amsterdam: Elsevier, 2018 - (Sedmak, A.; Radakovič, Z.; Rakin, M.), s. 1798-1803. Procedia Structural Integrity, 13. ISSN 2452-3216.
[ECF22 - European Conference on Fracture /22./. Belgrade (RS), 26.08.2018-31.08.2018]
R&D Projects: GA ČR(CZ) GA16-18702S
Institutional support: RVO:68081723
Keywords : Matrix/aggregate system * interfacial transition zone * finite element method * three-point bending test * generalized fracture mechanics * bi-material interface
OECD category: Audio engineering, reliability analysis

Fracture behavior of a crack in a matrix/aggregate (MTX/AGG) system is studied. Influence of the Interfacial Transition Zone (ITZ) between the individual phases on the fracture response is investigated. It is discussed how the crack propagation process depends on properties of matrix and aggregate but especially the influence of the ITZ (that arises between the individual layers) is investigated. Various combinations of materials of matrix, aggregate and ITZ affect the fracture behavior of the whole system. Numerical simulations of a crack terminating at the MTX/ITZ interface based on the finite element method are presented to analyze the critical loading and discuss the effects of several parameters (ITZ thickness, AGG radius, MTX/ITZ elastic mismatch) on the crack propagation near a bi-material interface.
Permanent Link: http://hdl.handle.net/11104/0300015