Cracks Pattern Formation and Spalling in Functionalized Thin Films

Leguillon, Dominique; Haddad, O.; Adamowska, Malgorzata; Costa, Patrick Da

doi:10.1016/j.mspro.2014.06.020

Cited by 8 publications

(4 citation statements)

References 10 publications

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“…Unlike the present case, the crack length is known (the thickness of the thin layer) and the problem is much easier to address. Micro-cracking is also observed during quenching of ceramics (Shao et al, 2010;Bahr et al, 2010;Jiang et al, 2012) or in drying processes (Jenkins, 2009;Maurini et al, 2013;Leguillon, 2013;Leguillon et al, 2014).…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

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Prediction of the surface cracking pattern of an oxidized polymer induced by residual and bending stresses

Leguillon

Lafarie-Frenot

Pannier

et al. 2016

International Journal of Solids and Structures

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To cite this version:Dominiquesmall durations there is a linear elastic phase followed by an abrupt failure of the specimen whereas for higher oxidation times, the elastic phase is followed by a nonlinear one corresponding to the development of numerous superficial micro-cracks prior to failure. In order to predict this behavior, a finite fracture mechanics approach based on the coupled criterion is used. This criterion requires an energy and a stress condition to be fulfilled. This approach is here extended to take into account the gradient of properties of the oxidized layer:Young"s modulus, tensile strength, toughness. One novelty of the approach is to implement the model in a periodic representative cell in order to process an increasing number of cracks.Despite the large scattering in the experimental detection of the initiation of the micro-cracks and their counting, the predictions agree rather well with the observations: the oxidation times leading either to a sudden failure of the sample or to micro-cracking are well reproduced, and ACCEPTED MANUSCRIPT A C C E P T E D M A N U S C R I P T the loads triggering the crack onset as well as the increase in number of cracks are somewhat well predicted.

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Section: Accepted M Manuscriptmentioning

confidence: 99%

“…This model was sketched in the study of the formation of crack patterns in functionalized thin films (Leguillon et al, 2014).…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Prediction of the surface cracking pattern of an oxidized polymer induced by residual and bending stresses

Leguillon

Lafarie-Frenot

Pannier

et al. 2016

International Journal of Solids and Structures

Self Cite

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“…For this geometry, it is a reasonable assumption compared to full 3D calculations [16]. For each pair of thicknesses, the crack length a is varied from 0 to 0.5 mm by unbuttoning nodes.…”

Section: The Modelmentioning

confidence: 99%

Edge cracking due to a compressive residual stress in ceramic laminates

Leguillon¹,

Ševeček²,

Martín³

et al. 2014

Comptes Rendus. Mécanique

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“…This approach proved to be a robust and efficient way to predict crack initiation in many configurations such as, e.g., weak or strong singularities, non-singular stress raisers (Weißgraeber et al 2016;Doitrand et al 2020b). Initially developed under small deformation assumption and linear elastic 2D framework, it has since then been extended to 3D (Leguillon et al 2014;Yosibash et al 2016;García et al 2016;Doitrand et al 2018a;Doitrand et al 2018b), to consider material or geometry nonlinearities (Leguillon et al 2017;Li et al 2019;Rosendahl et al 2019;Doitrand et al 2020c;Leite et al 2021), as well as dynamic crack initiation (Doitrand et al 2022;Chao Correas et al 2022). It also revealed efficient for small scale fracture assessment (Doitrand et al 2020a;Gallo et al 2020;Jimenez Alfaro et al 2021).…”

Section: Introductionmentioning

confidence: 99%