Multiaxial fatigue tests were carried out on plain and notched specimens extracted from EN-GJS-600-3 pearlitic DCI heavy-section castings. Two notches of different severities were combined for the determination of mode I and mode III critical distances, along with the related intrinsic fatigue strengths. SEM and CT clearly showed that fatigue cracks initiated from graphite nodules and shrinkage pores in notched and plain specimens, respectively. Different multiaxial criteria were compared, and best predictions were obtained with the Carpinteri et al. cri- terion with four parameters: axial and torsional intrinsic fatigue strengths, combined with the two different related critical distances.

Multiaxial plain and notch fatigue strength of thick-walled ductile cast iron EN-GJS-600-3: Combining multiaxial fatigue criteria, theory of critical distances, and defect sensitivity / Benedetti, Matteo; Santus, Ciro; Raghavendra, Sunil; Lusuardi, Danilo; Zanini, Filippo; Carmignato, Simone. - In: INTERNATIONAL JOURNAL OF FATIGUE. - ISSN 0142-1123. - STAMPA. - 156:(2022), pp. 106703.1-106703.13. [10.1016/j.ijfatigue.2021.106703]

Multiaxial plain and notch fatigue strength of thick-walled ductile cast iron EN-GJS-600-3: Combining multiaxial fatigue criteria, theory of critical distances, and defect sensitivity

Benedetti, Matteo;Raghavendra, Sunil;
2022-01-01

Abstract

Multiaxial fatigue tests were carried out on plain and notched specimens extracted from EN-GJS-600-3 pearlitic DCI heavy-section castings. Two notches of different severities were combined for the determination of mode I and mode III critical distances, along with the related intrinsic fatigue strengths. SEM and CT clearly showed that fatigue cracks initiated from graphite nodules and shrinkage pores in notched and plain specimens, respectively. Different multiaxial criteria were compared, and best predictions were obtained with the Carpinteri et al. cri- terion with four parameters: axial and torsional intrinsic fatigue strengths, combined with the two different related critical distances.
2022
Benedetti, Matteo; Santus, Ciro; Raghavendra, Sunil; Lusuardi, Danilo; Zanini, Filippo; Carmignato, Simone
Multiaxial plain and notch fatigue strength of thick-walled ductile cast iron EN-GJS-600-3: Combining multiaxial fatigue criteria, theory of critical distances, and defect sensitivity / Benedetti, Matteo; Santus, Ciro; Raghavendra, Sunil; Lusuardi, Danilo; Zanini, Filippo; Carmignato, Simone. - In: INTERNATIONAL JOURNAL OF FATIGUE. - ISSN 0142-1123. - STAMPA. - 156:(2022), pp. 106703.1-106703.13. [10.1016/j.ijfatigue.2021.106703]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/326599
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