RT Conference Proceedings
T1 Study of short cracks under biaxial fatigue
A1 López-Crespo, Pablo
A1 Moreno-Morales, María Belén
A1 López-Moreno, A.
A1 García-González, Antonio Luis
A1 Zapatero-Arenzana, José Arturo
K1 Materiales - Fatiga
AB 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 highmagnificationimages of the crack. The methodology was applied to study five different strain conditions on alow carbon ferritic-pearlitic steel specimen with tubular shape. A hole of 150 μm diameter was drilled to enforcethe crack to initiate at a particular spot. Different combinations of axial and torsional strains were analysedduring the initiation stage of the crack. The setup employed allowed detection of the crack to within 6 μm fromthe edge of the hole on average and monitoring of the crack during early stages. Fatigue crack propagationcurves clearly showed oscillations due to microstructure. It was also observed that these oscillations decreasedas the torsional component of the strain was increased.
PB IGF
YR 2014
FD 2014-09-17
LK http://hdl.handle.net/10630/8387
UL http://hdl.handle.net/10630/8387
LA eng
NO P. Lopez-Crespo et alii, Frattura ed Integrità Strutturale, 30 (2014) qq-rr; DOI: 10.3221/IGF-ESIS.30.uu
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.                     Junta de Andalucía through Proyectos de Excelencia grant reference TEP-3244 and of SpanishMinisterio de Economía y Competitividad through grant reference DPI2012-33382
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026