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dc.contributor.authorSalazar, Alicia
dc.contributor.authorRodríguez, Jesús
dc.contributor.authorSegovia, Angélica
dc.contributor.authorMartínez Benasat, Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.identifier.citationSalazar, A. [et al.]. Influence of the notch sharpening on the fracture toughness of bulk ethylene-propylene block copolymers. "Polymer testing", 02 Març 2010, vol. 29, p. 49-59.
dc.description.abstractThe effect of the notch sharpening procedure on the fracture toughness computed under linear-elastic and elastic-plastic conditions (at low and high loading rates, respectively) of a bulk ethylene–propylene block copolymer has been investigated. The specimens utilized for fracture characterization were sharpened using a steel razor blade and the femtosecond laser ablation technique. The crack growth initiation parameter, JIC, determined with the help of the elastic-plastic fracture approach, and the fracture toughness, KIC, obtained with specimens verifying linear-elastic fracture mechanics assumptions, of the steel razor blade sharpened samples were higher than that of the femtolaser sharpened specimens. The plastic deformation occurring ahead of the crack tip during the sharpening method seems to be the reason for the dissimilarity of the fracture values. Moreover, the strain hardening suffered by the material close to the notch tip reduces the stable crack growth resistance evaluated under elastic-plastic conditions.
dc.format.extent11 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshMaterials science
dc.titleInfluence of the notch sharpening on the fracture toughness of bulk ethylene-propylene block copolymers
dc.subject.lemacAssaigs de materials
dc.contributor.groupUniversitat Politècnica de Catalunya. POLYCOM - Polimers i compòsits: tecnologia
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
upcommons.citation.authorSalazar, A.; Rodríguez, J.; Segovia, A.; Martinez, A.
upcommons.citation.publicationNamePolymer testing

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