Non-Empirical Identification of Trigger Sites in Image Data Using Persistent Homology: Crack Formation During Heterogeneous Reduction of Iron-Ore Sinters (2018) M. Kimura, I. Obayashi, Y. Takeichi, R. Murao, Y. Hiraoka URL DOI Export citation crack formation iron-ore material physics material science trigger sites sinter specimen x-ray images Innovate persistent homology