Nodular Cast Iron – Fatigue Crack Measurement and Simulation

Predrag Čanžar; Zdenko Tonković

doi:10.4028/www.scientific.net/KEM.577-578.473

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 577-578Nodular Cast Iron – Fatigue Crack Measurement and...

Nodular Cast Iron – Fatigue Crack Measurement and Simulation

Abstract:

Study presented in this paper is concerned with fatigue crack initiation detection, crack propagation observation and measurement as well as with numerical simulation of damage accumulation and propagation in the nodular cast iron grade EN-GJS-400-18-LT. Material properties of nodular cast iron are well elaborated in previous authors' papers. Crack initiation and its propagation observation as well as crack length measurement is performed on standardized specimens using ARAMIS 4M optical system. Based on the experimental results, a new three-dimensional constitutive model is proposed to simulate the low-cycle fatigue behaviour of considered material. An efficient algorithm for modelling cyclic plasticity is used for performing numerical simulation of crack initiation and growth on standardized specimens made from nodular cast iron. The computational procedure accuracy is verified by comparing the computed results with the real experimental data.

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Periodical:

Key Engineering Materials (Volumes 577-578)

Pages:

473-476

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.577-578.473

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Online since:

September 2013

Authors:

Predrag Čanžar, Zdenko Tonković

Keywords:

Crack Growth, Experiment, Fatigue, Finite Element Modeling (FEM), Nodular Cast Iron

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