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B. Moreno P. Lopez-Crespo J. Zapatero

Abstract

This work presents a novel methodology for characterising fatigue cracks under biaxial conditions. The methodology uses high magnification Digital Image Correlation (DIC) technique for measuring displacement and strain crack-tip fields. By applying micro-speckle pattern on the metal surface it is possible to achieve high magnification for DIC technique. The speckles were created by electro-spray technique. The validity of this novel technique is demonstrated by direct comparison with standard extensometer measurements, under tension-compression and torsion conditions. In order to image the correct region, the notch effect on the fatigue life was also evaluated.

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    How to Cite

    Moreno, B., Lopez-Crespo, P., & Zapatero, J. (2013). High magnification crack-tip field characterisation under biaxial conditions. Frattura Ed Integrità Strutturale, 7(25), Pages 145–152. https://doi.org/10.3221/IGF-ESIS.25.21

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