Original title: Effect of the load eccentricity on fracture behaviour of cementitious materials subjected to the modified compact tension test
Authors: Seitl, Stanislav ; Ríos, J. D. ; Cifuentes, H. ; Veselý, V.
Document type: Papers
Conference/Event: MSMF8. International Conference on Materials Structure and Micromechanics of Fracture /8./, Brno (CZ), 20160627
Year: 2017
Language: eng
Abstract: Fracture properties of quasi-brittle cementitious composites are typically determined from the load–displacement response recorded during a fracture test by using the work-of-fracture method or possibly other relevant fracture models. Our contribution is focused on a set of experimental tests which are used to study the fracture behaviour on notched dog-bone-shaped specimens made of cementitious materials. These specimens are subjected to modified compact tension (ModCT) test under a specific range of eccentricity of the tensile load. This type of test generates a stress state in the specimen ligament which combines a direct tension with a defined level of bending due to eccentricity of the tensile load. Several values of relative notch length are also considered. While the crack propagates, a variety of stress states, resulting in variations in the crack-tip stress and deformation constraint, appears in the ligament zone because of the changes in the eccentricity of the applied load, which influences the fracture behaviour of the investigated specimens. The K-calibration, T-stress, CMOD and COD curves for ModCT specimens are introduced and variations of these curves with varying load eccentricity are discussed.
Keywords: constraint; fracture; load accentricity
Project no.: GA16-18702S (CEP), LM2015069 (CEP)
Funding provider: GA ČR, GA MŠk
Host item entry: Materials Structure & Micromechanics of Fracture VIII, ISBN 978-3-03835-626-4, ISSN 1662-9779

Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0275681

Permalink: http://www.nusl.cz/ntk/nusl-373477


The record appears in these collections:
Research > Institutes ASCR > Institute of Physics of Materials
Conference materials > Papers
 Record created 2018-03-09, last modified 2021-11-24


No fulltext
  • Export as DC, NUŠL, RIS
  • Share