Damage Investigation in A319 Aluminium Alloy by X-ray Tomography and Digital Volume Correlation during In Situ High-Temperature Fatigue Tests

N. Dahdah; N. Limodin; A. El Bartali; J. F. Witz; R. Seghir; E. Charkaluk; J. Y. Buffiere

doi:10.1111/str.12193

Damage Investigation in A319 Aluminium Alloy by X-ray Tomography and Digital Volume Correlation during In Situ High-Temperature Fatigue Tests

N. Dahdah
, N. Limodin
, A. El Bartali
, J. F. Witz
, R. Seghir
, E. Charkaluk
, J. Y. Buffiere

CNRS UMR 8107
Ecole Centrale de Lille
CNRS UMR 5510

Research output: Contribution to journal › Article › peer-review

48 Citations (Scopus)

Abstract

The aim of this work is to analyse the strain field heterogeneity in an aluminium alloy subjected to low-cycle fatigue at high temperature. In the cylinder heads produced by a lost-foam casting process, the microstructure of the studied alloy consists hard intermetallic phases and large gas and microshrinkage pores. In order to study the influence of this complex 3D microstructure on fatigue crack initiation and propagation at 250 °C, an experimental protocol using laboratory and synchrotron tomography, finite element simulation and a new digital volume correlation platform have been used. The results showed the role of pores in the crack nucleation and highlighted the importance of hard phases in the crack propagation, thanks to the resolution on the DVC measurement.

Original language	English
Pages (from-to)	324-335
Number of pages	12
Journal	Strain
Volume	52
Issue number	4
DOIs	https://doi.org/10.1111/str.12193
Publication status	Published - 1 Aug 2016
Externally published	Yes

Keywords

A319
digital volume correlation
fatigue
high temperature
in situ synchrotron X-ray tomography

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10.1111/str.12193

Cite this

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title = "Damage Investigation in A319 Aluminium Alloy by X-ray Tomography and Digital Volume Correlation during In Situ High-Temperature Fatigue Tests",

abstract = "The aim of this work is to analyse the strain field heterogeneity in an aluminium alloy subjected to low-cycle fatigue at high temperature. In the cylinder heads produced by a lost-foam casting process, the microstructure of the studied alloy consists hard intermetallic phases and large gas and microshrinkage pores. In order to study the influence of this complex 3D microstructure on fatigue crack initiation and propagation at 250 °C, an experimental protocol using laboratory and synchrotron tomography, finite element simulation and a new digital volume correlation platform have been used. The results showed the role of pores in the crack nucleation and highlighted the importance of hard phases in the crack propagation, thanks to the resolution on the DVC measurement.",

keywords = "A319, digital volume correlation, fatigue, high temperature, in situ synchrotron X-ray tomography",

author = "N. Dahdah and N. Limodin and \{El Bartali\}, A. and Witz, \{J. F.\} and R. Seghir and E. Charkaluk and Buffiere, \{J. Y.\}",

note = "Publisher Copyright: {\textcopyright} 2016 Wiley Publishing Ltd",

year = "2016",

month = aug,

day = "1",

doi = "10.1111/str.12193",

language = "English",

volume = "52",

pages = "324--335",

journal = "Strain",

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TY - JOUR

T1 - Damage Investigation in A319 Aluminium Alloy by X-ray Tomography and Digital Volume Correlation during In Situ High-Temperature Fatigue Tests

AU - Dahdah, N.

AU - Limodin, N.

AU - El Bartali, A.

AU - Witz, J. F.

AU - Seghir, R.

AU - Charkaluk, E.

AU - Buffiere, J. Y.

PY - 2016/8/1

Y1 - 2016/8/1

N2 - The aim of this work is to analyse the strain field heterogeneity in an aluminium alloy subjected to low-cycle fatigue at high temperature. In the cylinder heads produced by a lost-foam casting process, the microstructure of the studied alloy consists hard intermetallic phases and large gas and microshrinkage pores. In order to study the influence of this complex 3D microstructure on fatigue crack initiation and propagation at 250 °C, an experimental protocol using laboratory and synchrotron tomography, finite element simulation and a new digital volume correlation platform have been used. The results showed the role of pores in the crack nucleation and highlighted the importance of hard phases in the crack propagation, thanks to the resolution on the DVC measurement.

AB - The aim of this work is to analyse the strain field heterogeneity in an aluminium alloy subjected to low-cycle fatigue at high temperature. In the cylinder heads produced by a lost-foam casting process, the microstructure of the studied alloy consists hard intermetallic phases and large gas and microshrinkage pores. In order to study the influence of this complex 3D microstructure on fatigue crack initiation and propagation at 250 °C, an experimental protocol using laboratory and synchrotron tomography, finite element simulation and a new digital volume correlation platform have been used. The results showed the role of pores in the crack nucleation and highlighted the importance of hard phases in the crack propagation, thanks to the resolution on the DVC measurement.

KW - A319

KW - digital volume correlation

KW - fatigue

KW - high temperature

KW - in situ synchrotron X-ray tomography

U2 - 10.1111/str.12193

DO - 10.1111/str.12193

M3 - Article

AN - SCOPUS:85000608430

SN - 0039-2103

VL - 52

SP - 324

EP - 335

JO - Strain

JF - Strain

IS - 4

ER -

Damage Investigation in A319 Aluminium Alloy by X-ray Tomography and Digital Volume Correlation during In Situ High-Temperature Fatigue Tests

Abstract

Keywords

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