The paper describes a method for the identification of selected mechanical fracture param- eters of fine-grained brittle matrix composites, and its software implementation. The artificial neural network-basedinverseanalysismethodcanbeemployedtoobtainparametersfromexperimentaldata acquired during three-point bending tests on notched prism specimens. This capability is utilized…
The paper describes a method for the identification of selected mechanical fracture param- eters of fine-grained brittle matrix composites, and its software implementation. The artificial neural network-basedinverseanalysismethodcanbeemployedtoobtainparametersfromexperimentaldata acquired during three-point bending tests on notched prism specimens. This capability is utilized and extended in order to conduct parameter identification on fine-grained brittle matrix composites. Due to the potentially wide range of composite mixtures and hence the wide range of experimental re- sponses of individual specimens, an ensemble of artificial neural networks was created. It allows the entire range of variants to be covered, and provides resulting parameter values with sufficient preci- sion. Such a system is also easy to expand if a composite with properties outside the current range is tested. The proposed identification system has been tested and employed for the determination of parameters quantifying material resistance against crack initiation and propagation, as well as for the comparison of newly developed composites based on alkali-activated matrix.