期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 71, 期 -, 页码 3-10出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2014.03.022
关键词
X-ray tomography; Digital volume correlation; In situ; Cast iron; 3D
资金
- RUPXCUBE Project [ANR-09-BLAN-0009-01]
This paper describes a methodology used to compute stress intensity factor values along the curved front of a fatigue crack inside a nodular cast iron. An artificial defect is introduced at the surface of a small sample. The initiation and growth of a fatigue crack from this defect during constant amplitude cycling is monitored in situ by laboratory X-ray tomography. The method for processing the 3D images in order to compute SIF values is described in detail. The results obtained show variations of the stress intensity factor values along the crack front. (C) 2014 Elsevier Ltd. All rights reserved.
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