On the prediction of crack propagation in cast steel specimens
2004 (English)In: 9th Portuguese Conference on Fracture, 2004Conference paper (Refereed)
This investigation deals with the fatigue behaviour of cast steel with respect to defects, crack initiation, crack growth and material parameters. It constitutes the initial part of a larger work in cast materials. The main objectives have been to validate calculations made by FEM and Paris law with data from fatigue tests and to confirm material parameters for Pan's law. Furthermore, the results where put against calculations obtained from the fracture mechanic software AF-GROW. During the accomplishment some difficulties was experienced concerning the initiation of the crack, with result that there where just a few specimens suitable for evaluation by LEFM. However, some conclusions concerning the crack growth behaviour could yet be done. The results in general showed good correspondence, the results from AF-GROW included. Most divergences could be explained by residual stresses and, to some extent, the initiation problems.
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IdentifiersURN: urn:nbn:se:kth:diva-14059OAI: oai:DiVA.org:kth-14059DiVA: diva2:329542
February 18th – 20th 2004, Setúbal
QC 201007122010-07-122010-07-122010-11-24Bibliographically approved