Juan Toledo https://orcid.org/0000-0002-6047-035X Felipe Diaz https://orcid.org/0000-0003-4998-5536 Matías Peralta https://orcid.org/0000-0001-5807-8618 Diego Fernandino https://orcid.org/0000-0003-4647-2663


This work is a continuation of the studies presented in a recent paper by the authors, where a methodology to obtain different nodule quality categories in spheroidal graphite cast iron, was proposed. In this study, an exhaustive analysis of the highest-quality graphite nodules was performed. The experimental methodology involves X-ray micro-computed tomography analysis and digital image post-processing of the high-quality graphite nodule population. Furthermore, different subpopulations were selected, following a nodular size criterion. The procedure involves the evaluation and comparison of the sphericity and compactness distributions and the distances between neighbouring nodules by using ad-hoc image processing software. The results reveal the complementary nature of the sphericity and compactness parameters, which allow classifying, with great accuracy, different nodular quality categories of spheroidal graphite cast iron. Additionally, new viewpoints about the nodular morphology study and the distribution of quality nodules in the metallic matrix was provided, which could be extended to other heterogeneous materials.


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    How to Cite

    Toledo, J., Diaz, F., Peralta, M., & Fernandino, D. (2022). High-quality nodule analysis in spheroidal graphite cast iron using X-ray micro-computed tomography. Frattura Ed Integrità Strutturale, 16(62), 279–288. https://doi.org/10.3221/IGF-ESIS.62.20