Conference Proceedings

Of cuts and cracks: Data analytics on constrained graphs for early prediction of failure in cementitious materials

S Kahagalage, A Tordesillas, M Nitka, J Tejchman

EPJ Web of Conferences | Published : 2017

Abstract

Using data from discrete element simulations, we develop a data analytics approach using network flow theory to study force transmission and failure in a 'dog-bone' concrete specimen submitted to uniaxial tension. With this approach, we establish the extent to which the bottlenecks, i.e., a subset of contacts that impedes flow and are prone to becoming overloaded, can predict the location of the ultimate macro-crack. At the heart of this analysis is a capacity function that quantifies, in relative terms, the maximum force that can be transmitted through the different contacts or edges in the network. Here we set this function to be solely governed by the size of the contact area between the ..

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