Please use this identifier to cite or link to this item:
DC FieldValueLanguage
dc.contributor.authorConstantinides, Georgiosen
dc.contributor.authorGanneau, F. P.en
dc.contributor.authorUlm, Franz Josefen
dc.contributor.otherΚωνσταντινίδης, Γιώργος-
dc.identifier.citationInternational Journal of Solids and Structures,2006, Volume 43, Issue 6,Pages 1727-1745en
dc.description.abstractWe propose a dual indentation technique for the assessment of the cohesion and friction angle of cohesive-frictional materials of the Mohr-Coulomb type. The technique is based on a computational implementation of the yield design theorems applied to conical indentation tests with different apex angles. The upper bound solutions are found to be very close to flat indentation solutions available for cohesive-frictional materials. On this basis we derive fundamental hardness-to-cohesion solutions in function of the friction angle and the apex angle. By studying the property of these dimensionless relations, we show that the ratio of two hardness measurements obtained from indentation tests with different apex angles, allows one to determine the friction angle. This dual indentation method is applied to Berkovich and Corner Cube indenter assimilated to equivalent cones of different apex angle. The method is validated for a 'model' material, metallic glass, which has recently been identified as a cohesive-frictional materials. The only input to the method are two hardness values which we obtain by microindentation on metallic glass. The outcome are values of the cohesion and friction angle, which are found to be in excellent agreement with reported cohesion and friction angle values of metallic glass obtained by macroscopic triaxial testing and comprehensive finite-element backanalysis of indentation curves.en
dc.rights© Elsevier Ltd. All rights reserved.en
dc.subjectFinite element methoden
dc.subjectMetallic glassesen
dc.subjectStrength of materialsen
dc.titleDual-indentation technique for the assessment of strength properties of cohesive-frictional materialsen
dc.affiliationMassachusetts Institute of Technologyen
item.fulltextNo Fulltext- of Mechanical Engineering and Materials Science and Engineering- of Engineering and Technology- of Engineering and Technology-
Appears in Collections:Άρθρα/Articles
Show simple item record

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.