| Titre : |
X-ray computed tomography for assessment of mechanical properties and monitoring damage |
| Type de document : |
texte imprimé |
| Auteurs : |
Abderrahmane Ayadi, Auteur ; Hedi Nouri, Auteur ; Frédéric Roger, Auteur ; Habibou Matournam, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 63-66 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Analyse de dommages (matériaux)
Analyse quantitative (chimie)
Composites à fibres de verre -- Propriétés mécaniques
Eléments finis, Méthode des
Essais dynamiques
Mécanique analytique
Scanographie
Traction (mécanique)
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
A coupled experimental and numerical approach was developed to overcome the limits of integrative simulation methods in the case of short glass fibre-reinforced thermoplastics. On the one hand, laboratory X-ray computed tomograhy and finite element modelling were combined to assess local mechanical properties in strongly anisotropic zones where weld lines potentially form. On the other hand, an original experimental protocol was developed to monitor damage evolution during continuous tensile loading. The experimental results open new perspectives to formulate more physically based local damage criteria. |
| Note de contenu : |
- Material and semi-structural samples
- Assessment of mechanical properties in an opposing flow weld line
- Mapping volume strain distribution in an adjacent flow weld line : combining helical µCT and full-scale FEM
- Quantitative analysis of damage kinetics based on in-situ tests
- FIGURES : 1. Schematic representation of the suggested approach based on experimental X-ray characterisation of zones where injection moulding packages may lack precision - 2. Overview of the multi-scale finite-element homogenization procedure ; characteristic element sizes are provided in appropriate (ength units) - 3. Sample analysis-using the helical µCT detection mode - 4. Quantitative evaluation of surface damage-based on SEM (in-situ discontinuous tensile tests - 5. SR-µ observations of local damage initiation and observation in a PA66GF35 samples ; b) damage evolution law for the same analyzed sample |
| En ligne : |
https://drive.google.com/file/d/1fnx7zOaKPYRRJuOBXUPLV1h_lt707_fa/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28779 |
in JEC COMPOSITES MAGAZINE > N° 113 (06/2017) . - p. 63-66
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