Micromechanical analysis of internal stress development during single-fibre fragmentation testing of Ti/SiC f

G. Rauchs; M. Preuss; P. J. Withers

doi:10.1016/S1359-6454(02)00068-X

Micromechanical analysis of internal stress development during single-fibre fragmentation testing of Ti/SiC f

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Abstract

An axisymmetric finite element model of a single fibre composite tensile specimen having a Ti-6Al-4V matrix reinforced with one SCS6 SiC fibre has been constructed. The sliding of the fibre is modelled using a constant critical shear stress and fibre fragmentation introduced using the element removal technique. In this way, the fibre and matrix strains have been computed as the fibre fractures progressively. The results are compared to synchrotron X-ray strain scanning measurements made in-situ during the test and critical interfacial parameters are extracted. Good agreement is found between numerical and experimental results based on a critical shear stress of 200 MPa for loading and unloading including both forward and reverse slip. © 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

Original language	English
Pages (from-to)	2477-2490
Number of pages	13
Journal	Acta Materialia
Volume	50
Issue number	10
DOIs	https://doi.org/10.1016/S1359-6454(02)00068-X https://doi.org/10.1016/S1359-6454(02)00068-X
Publication status	Published - 12 Jun 2002

Keywords

Fibre fragmentation
Finite element modelling
Interface shear stress
X-ray diffraction

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title = "Micromechanical analysis of internal stress development during single-fibre fragmentation testing of Ti/SiC f",

abstract = "An axisymmetric finite element model of a single fibre composite tensile specimen having a Ti-6Al-4V matrix reinforced with one SCS6 SiC fibre has been constructed. The sliding of the fibre is modelled using a constant critical shear stress and fibre fragmentation introduced using the element removal technique. In this way, the fibre and matrix strains have been computed as the fibre fractures progressively. The results are compared to synchrotron X-ray strain scanning measurements made in-situ during the test and critical interfacial parameters are extracted. Good agreement is found between numerical and experimental results based on a critical shear stress of 200 MPa for loading and unloading including both forward and reverse slip. {\textcopyright} 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.",

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T1 - Micromechanical analysis of internal stress development during single-fibre fragmentation testing of Ti/SiC f

AU - Rauchs, G.

AU - Preuss, M.

AU - Withers, P. J.

PY - 2002/6/12

Y1 - 2002/6/12

N2 - An axisymmetric finite element model of a single fibre composite tensile specimen having a Ti-6Al-4V matrix reinforced with one SCS6 SiC fibre has been constructed. The sliding of the fibre is modelled using a constant critical shear stress and fibre fragmentation introduced using the element removal technique. In this way, the fibre and matrix strains have been computed as the fibre fractures progressively. The results are compared to synchrotron X-ray strain scanning measurements made in-situ during the test and critical interfacial parameters are extracted. Good agreement is found between numerical and experimental results based on a critical shear stress of 200 MPa for loading and unloading including both forward and reverse slip. © 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

AB - An axisymmetric finite element model of a single fibre composite tensile specimen having a Ti-6Al-4V matrix reinforced with one SCS6 SiC fibre has been constructed. The sliding of the fibre is modelled using a constant critical shear stress and fibre fragmentation introduced using the element removal technique. In this way, the fibre and matrix strains have been computed as the fibre fractures progressively. The results are compared to synchrotron X-ray strain scanning measurements made in-situ during the test and critical interfacial parameters are extracted. Good agreement is found between numerical and experimental results based on a critical shear stress of 200 MPa for loading and unloading including both forward and reverse slip. © 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

KW - Fibre fragmentation

KW - Finite element modelling

KW - Interface shear stress

KW - X-ray diffraction

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Micromechanical analysis of internal stress development during single-fibre fragmentation testing of Ti/SiC f

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Keywords

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