2026-06-01T18:12:31Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/83872026-02-03T12:04:48Zcom_10630_2254col_10630_37959
Study of short cracks under biaxial fatigue
López-Crespo, Pablo
Moreno-Morales, María Belén
López-Moreno, A.
García-González, Antonio Luis
Zapatero-Arenzana, José Arturo
Materiales - Fatiga
In this paper a methodology for evaluating crack initiation under biaxial conditions is presented.
The methodology consists of evaluating the crack length automatically with digital processing of highmagnification
images of the crack. The methodology was applied to study five different strain conditions on a
low carbon ferritic-pearlitic steel specimen with tubular shape. A hole of 150 μm diameter was drilled to enforce
the crack to initiate at a particular spot. Different combinations of axial and torsional strains were analysed
during the initiation stage of the crack. The setup employed allowed detection of the crack to within 6 μm from
the edge of the hole on average and monitoring of the crack during early stages. Fatigue crack propagation
curves clearly showed oscillations due to microstructure. It was also observed that these oscillations decreased
as the torsional component of the strain was increased.
2014-11-10T09:03:50Z
2014-11-10T09:03:50Z
2014-11-09
2014-09-17
conference output
P. Lopez-Crespo et alii, Frattura ed Integrità Strutturale, 30 (2014) qq-rr; DOI: 10.3221/IGF-ESIS.30.uu
http://hdl.handle.net/10630/8387
eng
The First Multi-Lateral Workshop on “Fracture and Structural Integrity related Issues”
Catania, Italia
15/09/2014
open access
IGF