Hertzian contact fatigue on alumina/alumina-zirconia laminated composites

Jiménez‐Piqué, E.; Ceseracciu, Luca; Chalvet, Francis; Anglada, M.; Portu, Goffredo de

doi:10.1016/j.jeurceramsoc.2004.09.011

Cited by 23 publications

(12 citation statements)

References 36 publications

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“…Residual stresses on A/AZ composites were estimated by different methods: a) finite element analysis gives a value of 240 MPa; b) fluorescence measurements on these materials give values of about 150 MPa [29]; c) comparison of apparent fracture toughness by Vickers indentation [12] gives a value of 180 MPa.…”

Section: Materials Preparationmentioning

confidence: 99%

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Instrumented indentation on alumina–alumina/zirconia multilayered composites with residual stresses

Jiménez‐Piqué

Ceseracciu

Gaillard

et al. 2006

Philosophical Magazine

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In this work the instrumented indentation response of polycrystalline alumina and alumina-based ceramic multilayers with well known residual stresses have been investigated. Young's modulus and hardness were evaluated as a function of penetration depth with Berkovich and spherical indenters by continuous stiffness measurements. A size effect was observed due to the length scale of the microstructure. Values of hardness and Young's modulus obtained were in good agreement with previous works. No significant differences in the P-h curves were observed for materials with and without residual stress, making, then, difficult to employ the different methodologies derived for estimation of residual stress or crack length evaluation existing in the literature. Crack length had threfore to be measured by direct observation. In this respect, cube corner indentations did not produce well-developed radial cracks but chipping of the material, whereas indentations with Berkovich indenters produce radial cracks suitable for apparent fracture toughness estimation, and, consequently, residual stress.

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Section: Materials Preparationmentioning

confidence: 99%

“…These ceramic multilayers have shown improved fracture toughness [9], reliability [10], wear behaviour [11] and contact resistance [12,13] than their monolithic counterparts, due, principally, to their residual stress. Correct assessment of this residual stress is, therefore, a key factor in these materials.…”

Section: Introductionmentioning

confidence: 99%

Instrumented indentation on alumina–alumina/zirconia multilayered composites with residual stresses

Jiménez‐Piqué

Ceseracciu

Gaillard

et al. 2006

Philosophical Magazine

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“…17 Recent studies have proved that laminated materials present an enhanced resistance to contact loading, both under static and cyclic loadings. 13,18 In terms of fracture mechanics, it has also been shown that the cone crack angle and length may be severely modified in these materials compared to monolithic ceramics, both by the R-curve behaviour and the residual stresses. 19 It is thought that even in absence of such phenomena, the mere elastic mismatch between the first and second layer may have a remarkable influence on the crack formation.…”

Section: Introductionmentioning

confidence: 99%

Influence of the elastic mismatch on the Hertzian cone crack path in ceramic bilayers

Ceseracciu

Anglada

Jiménez‐Piqué

2011

Journal of the European Ceramic Society

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“…However, more realistic loading involve multiaxial inhomogeneous stress fields, rather than uniaxial homogeneous stress states [8]. Laminates have shown superior mechanical properties than the monolithic counterparts, for example, in wear tests [9] and localized blunt loading (spherical indentation) [10]. These tests are focused on surface damage, but even though they describe resistance to surface degradation, which leads to functionality loss, they are not completely appropriate for a global evaluation of a surface-related strength, even under severe conditions [11].…”

Section: Introductionmentioning

confidence: 99%