X-ray micro-tomography an attractive characterisation technique in materials science

Salvo, Luc; Cloetens, Peter; Maire, Éric; Zabler, Simon; Blandin, J.J.; Buffière, Jean‐Yves; Ludwig, Wolfgang; Boller, Élodie; Bellet, Daniel; Josserond, C.

doi:10.1016/s0168-583x(02)01689-0

Cited by 417 publications

(249 citation statements)

References 27 publications

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“…Refs. [26,27]. In the present case, the tomography experiments were conducted on the ID19 beamline of ESRF, Grenoble, and on the TOMCAT beamline of SLS, Villigen, using absorption contrast only.…”

Section: X-ray Tomography and Data Analysismentioning

confidence: 99%

Curvature of micropores in Al–Cu alloys: An X-ray tomography study

Felberbaum

Rappaz

2011

Acta Materialia

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Micropores formed in Al-Cu alloys cast under controlled conditions have been analyzed using high-resolution X-ray tomography. The influence of inoculation conditions, copper content, cooling rate and initial hydrogen content on the morphology of pores has been investigated. Based on the three-dimensional reconstructed shape of the pores, the distribution of curvature was estimated. It is shown that the mean curvature of pores in either non-inoculated or inoculated Al-4.5 wt.%Cu alloys can be as large as 0.35 lm À1 near the end of solidification and can be fairly well approximated by a set of interconnected cylinders growing in between the primary phase dendrites. The so-called "pinching" effect, i.e. the restriction of the pore curvature by the solid network, is a function of the volume fraction of the primary phase and of the secondary dendrite arm spacing. If the fraction of porosity is highly dependent on the initial hydrogen content, the curvature itself is only weakly influenced by this parameter. Based on these results, it is concluded that curvature plays a major role in porosity models and that the analytical pinching model developed by Couturier et al.[1] offers a fairly good and simple approximation of this contribution.

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Section: X-ray Tomography and Data Analysismentioning

confidence: 99%

Curvature of micropores in Al–Cu alloys: An X-ray tomography study

Felberbaum

Rappaz

2011

Acta Materialia

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“…In the literature, these data have already been used for the analysis of composites degradation. For instance, kinematic fields are employed for the study of damageinduced displacement/strain heterogeneities [11,12]; examination of thermal fields and heat dissipation allows a non-destructive evaluation of internal defects and the monitoring of damage initiation and propagation [13,14]; the knowledge of the volume density distribution finally provides the debonding zones within the material [15,16]. Yet, in the context of polymeric composite materials, each family of full-field data still remains used separately from the other.…”

Section: Introductionmentioning

confidence: 99%

Damage investigation in CFRP composites using full-field measurement techniques: Combination of digital image stereo-correlation, infrared thermography and X-ray tomography

Goidescu¹,

Welemane²,

Girard³

et al. 2013

Composites Part B: Engineering

141

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“…Micro-computed X-ray tomography (XµCT) (Stock 2008) is a method for obtaining a digitalized 3D representation of basically any material, even fragile samples (Salvo et al 2003). The method produces a 3D density map that also records the interior of the sample without disintegrating it.…”

Section: Micro-computed X-ray Tomographymentioning

confidence: 99%

Improving Compression Recovery of Foam-formed Fiber Materials

et al. 2018

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Foam technology enables the preparation of new fiber-based materials with reduced density and improved mechanical performances. By utilizing multi-scale structural features of the formed fiber network, it is possible to enhance the elasticity of lightweight cellulose materials under compressive loads. Sufficient strength is achieved by optimally combining fibers and fines of different length-scales. Elasticity is improved by adding polymers that accumulate at fiber joints, which help the network structure to recover after compression. This concept was demonstrated using natural rubber as the polymer additive. For a model network of viscose fibers and wood fines, the immediate elastic recovery after 70% compression varied from 60% to 80% from the initial thickness. This was followed by creep recovery, which reached 86% to 88% recovery within a few seconds in cross-linked samples. After 18 h, the creep recovery in those samples was almost complete at up to 97%. A similar improvement was seen for low-density materials formed with chemi-thermomechanical fibers. The formed structure and elastic properties were sensitive not only to the raw materials, but also to the elastomer stiffness and foam properties. The improved strain recovery makes the developed cellulose materials suitable for various applications, such as padding for furniture, panels, mattresses, and insulation materials.

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X-ray micro-tomography an attractive characterisation technique in materials science

Cited by 417 publications

References 27 publications

Curvature of micropores in Al–Cu alloys: An X-ray tomography study

Curvature of micropores in Al–Cu alloys: An X-ray tomography study

Damage investigation in CFRP composites using full-field measurement techniques: Combination of digital image stereo-correlation, infrared thermography and X-ray tomography

Improving Compression Recovery of Foam-formed Fiber Materials

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