Fracture behaviour of historic oak wood under three-point bending : an experimental-numerical study

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Abstract

Historical Dutch oak wood cabinets occasionally show cracks that might originate from hygro-thermal climate fluctuations. This damage mechanism needs to be understood in full detail in order to optimally preserve these museum objects for future generations. For this purpose, in this paper the fracture response of historic oak wood beams is analysed under three-point bending in a combined experimental-numerical study. The numerical results are computed with the finite element method (FEM), whereby the discrete fracture behaviour is simulated using interface elements equipped with an interface damage model. Both the experimental failure response and cracking path are in good agreement with the FEM results. Scanning electron microscopy photos taken at the crack plane illustrate that the fracture toughness includes the effect of cell bridging. The influence on the failure response by material anisotropy and the location of a geometrical imperfection at the beam notch are demonstrated.
Original languageEnglish
Title of host publicationAnalysis and characterisation of wooden cultural heritage by scientific engineering methods, 28-29 April 2016, Halle, Germany
Pages51-62
Number of pages12
Publication statusPublished - 28 Apr 2016
EventAnalysis and Characterisation of Wooden Cultural Heritage by Scientific Engineering Methods - Halle, Germany
Duration: 28 Apr 201629 Apr 2016

Conference

ConferenceAnalysis and Characterisation of Wooden Cultural Heritage by Scientific Engineering Methods
CountryGermany
CityHalle
Period28/04/1629/04/16

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