RT Journal Article
T1 Characterisation of the crack tip plastic zone in fatigue via synchrotron X-ray diffraction
A1 Carrera, Manuel
A1 Sánchez-Cruces, Manuel Alejandro
A1 Kelleher, Joseph F.
A1 Tai, Yee-Han
A1 Yates, John R.
A1 Withers, Philip J.
A1 López-Crespo, Pablo
K1 Plásticos
AB This paper describes a new methodology for characterising the plastic zoneahead of a fatigue crack. This methodology is applied to a set of experimentaldata obtained by synchrotron X-ray diffraction on a bainitic steel compact ten-sion specimen. The methodology is based on generating the equivalent VonMises strain field from the X-ray experimental elastic strain maps. Based onthe material response, a threshold is then applied on the equivalent strainmaps to identify the size and shape of the plastic zone. The experimental plas-tic zone lies between the plane strain and plane stress Westergaard's boundsbut closer to the plane strain theoretical prediction confirming that the volumeanalyzed is predominantly subjected to plane strain conditions. However, theobserved plastic zone has a somewhat flatter shape, extending further from thecrack plane but less extended in the crack growing direction.
PB Wiley
YR 2022
FD 2022-04-23
LK https://hdl.handle.net/10630/24426
UL https://hdl.handle.net/10630/24426
LA eng
NO Carrera, M, Cruces, AS, Kelleher, JF, et al. Characterisation of the crack tip plastic zone in fatigue via synchrotron X-ray diffraction. Fatigue Fract Eng Mater Struct. 2022; 45( 7): 2086- 2098. doi:10.1111/ffe.13705
NO Engineering and Physical SciencesResearch Council, Grant/Award Numbers:EP/R00661X/1, EP/S019367/1, EP/P025021/1, EP/P025498/1; EuropeanSocial Found, Grant/Award Number:UMAJI84; Programa Operativo FEDER(Junta de Andalucia, Spain), Grant/AwardNumber: UMA18-FEDERJA-250; Fundingfor open access charge: Universidad deM alaga / CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026