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Abstract: This paper presents an analysis of the notch effect in the load bearing capacity, the apparent fracture toughness and the fracture mechanisms of four different materials: polymer PMMA, aluminium alloy Al7075-T651, and structural steels S275JR and S355J2 within their corresponding ductile-to-brittle transition zone.Concerning the load bearing capacity and the apparent fracture toughness, a clear notch effect has been observed. In the case of the apparent fracture toughness, this has been adequately predicted here through the Theory of Critical Distances.As for fracture mechanisms, it is shown how these progressively change with the notch radius, from basically brittle ones in cracked conditions, to non-linear mechanisms observed for higher notch radii. This evolution has been observed in the four analysed materials and, in all cases, has justified the corresponding consequences of the notch effect on both the load bearing capacity and the apparent fracture toughness.
Authorship: Cicero S., Madrazo V., García T., Cuervo J., Ruiz E.,
Fuente: Engineering Failure Analysis Volume 29, April 2013, Pages 108-121
Publisher: Elsevier BV
Publication date: 01/04/2013
No. of pages: 14
Publication type: Article
DOI: 10.1016/j.engfailanal.2012.11.010
ISSN: 1350-6307,1873-1961
Spanish project: MAT2010-15721
Publication Url: https://doi.org/10.1016/j.engfailanal.2012.11.010
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SERGIO CICERO GONZALEZ
VIRGINIA MADRAZO ACEBES
TIBERIO GARCIA PEMAN
JORGE CUERVO MANRIQUE
ESTELA RUIZ MARTINEZ
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