Tensile flow stress of ceramic particle-reinforced metal in the presence of particle cracking

Mueller, R.; Rossoll, A.; Weber, Ludger; Bourke, M.A.M.; Dunand, David C.; Mortensen, Alicja

doi:10.1016/j.actamat.2008.05.004

Cited by 23 publications

(15 citation statements)

References 93 publications

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“…7 and 8 demonstrate that the stress in the particle increases substantially as a result of the presence of the punched zone as the particle size decreases. Thus, the possibility of particle fracture must also be taken into account as the strength of the composite is increased [10,28,31,32]. Assuming that the matrix remains intact (i.e.…”

Section: Implications For Materials Designmentioning

confidence: 99%

An enhanced continuum model for size-dependent strengthening and failure of particle-reinforced composites

2009

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Section: Implications For Materials Designmentioning

confidence: 99%

An enhanced continuum model for size-dependent strengthening and failure of particle-reinforced composites

2009

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“…Synchrotron-based X-ray diffraction, and small-and wide-angle X-ray scattering (SAXS and WAXS, respectively), are advanced nondestructive techniques that enable characterization of the nanoscale and subnanoscale structure of materials, and have been widely used to study load transfer between two phases in matrix composites [9][10][11]. In situ compression testing, in combination with the WAXS technique, has been used to quantify the internal strains of the phase [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Multiscale modelling and diffraction-based characterization of elastic behaviour of human dentine

et al. 2013

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Human dentine is a hierarchical mineralized tissue with a two-level composite structure, with tubules being the prominent structural feature at a microlevel, and collagen fibres decorated with hydroxyapatite (HAp) crystallite platelets dominating the nanoscale. Few studies have focused on this two-level structure of human dentine, where the response to mechanical loading is thought to be affected not only by the tubule volume fraction at the microscale, but also by the shape and orientation distribution of mineral crystallites, and their nanoscale spatial arrangement and alignment. In this paper, in situ elastic strain evolution within HAp in dentine subjected to uniaxial compressive loading along both longitudinal and transverse directions was characterized simultaneously by two synchrotron X-ray scattering techniques: small- and wide-angle X-ray scattering (SAXS and WAXS, respectively). WAXS allows the evaluation of the apparent modulus linking the external load to the internal HAp crystallite strain, while the nanoscale HAp distribution and arrangement can be quantified by SAXS. We proposed an improved multiscale Eshelby inclusion model that takes into account the two-level hierarchical structure, and validated it with a multidirectional experimental strain evaluation. The agreement between the simulation and measurement indicates that the multiscale hierarchical model developed here accurately reflects the structural arrangement and mechanical response of human dentine. This study benefits the comprehensive understanding of the mechanical behaviour of hierarchical biomaterials. The knowledge of the mechanical properties related to the hierarchical structure is essential for the understanding and predicting the effects of structural alterations that may occur due to disease or treatment on the performance of dental tissues and their artificial replacements.

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“…with V r = 1 -V m the initial volume fraction of reinforcement [74]. Two thus back-calculated in-situ matrix flow curves are shown in Fig.18b, one from a composite compressive curve, the other from a composite e↵ective tensile curve.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…[74]. In that work a variational model was adapted to predict in relatively simple terms the flow curve of isotropic composites made of a power-law metal matrix reinforced with rigid particles.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…In that work a variational model was adapted to predict in relatively simple terms the flow curve of isotropic composites made of a power-law metal matrix reinforced with rigid particles. The influence of particle cracking was accounted for by assuming that cracked particles can be replaced, in the model, by as much matrix material (an assumption justified by micromechanical calculations of cracked equiaxed particles in an elastic matrix [74]). Making this assumption and using the Mori-Tanaka expression for Young's modulus, the volume fraction, V r2 , of particles cracked within the composite can then be deduced, as a function of tensile strain ✏, from the measured evolution of the composite modulus (given in Fig.15 as D E versus ✏).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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Infiltrated Cu8Al–Ti alumina composites

Krüger

Mortensen

2014

Composites Part A: Applied Science and Manufacturing

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Tensile flow stress of ceramic particle-reinforced metal in the presence of particle cracking

Cited by 23 publications

References 93 publications

An enhanced continuum model for size-dependent strengthening and failure of particle-reinforced composites

An enhanced continuum model for size-dependent strengthening and failure of particle-reinforced composites

Multiscale modelling and diffraction-based characterization of elastic behaviour of human dentine

Infiltrated Cu8Al–Ti alumina composites

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