| Titre : |
Direction-dependent characteristics : Unidirectional plates for preparing highly oriented test specimens |
| Type de document : |
texte imprimé |
| Auteurs : |
Tamara van Roo, Auteur ; Felix Dillenberger, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 41-44 |
| Langues : |
Anglais (eng) |
| Catégories : |
Anisotropie
Composites à fibres courtes
Composites à fibres de verre
Distribution et orientation des fibres
Fibres à orientation unidirectionnelle
Micromécanique (physique du solide)
Simulation par ordinateur
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The anisotropic properties of short fiber-reinforced materials make it difficult to construct a reliable theoretical material description and so complicate component design. An optimized injection molding tool now enables highly oriented test specimens to be produced. In this way, the necessary fiber orientation-dependent parameters for a reliable material description can be determined. |
| Note de contenu : |
- Micromechanical methods and currently used test specimens
- Concept of the UD plate
- Experimental determination of fiber orientation
- Figure : Schematic representation of fiber orientation in the x direction determined by simulation. The new plate makes it possible to produce short glass fiber-reinforced, unidirectional test specimens. The particular advantage of the new plate is that specimens can be taken under any desired angle
- Fig. 1 : The classic dumbbel-shaped test bar according to DIN EN ISO 527-2 type 1A used in material testing
- Fig. 2 : An injection molded plate with a highly oriented test zone measuring 20 x 80 x 2 mm3, specially developed for testing short glass fiber-reinforced plastics
- Fig. 3 : Optimized UD plate with a highly oriented test zone measuring 40 x 80 x 2 mm3. Test bars can be extracted at any desired angle, for example 0°, 45° and 90°
- Fig. 4 : Fiber orientation tensor in the center of the test zone of the UD plate (red dot in Fig. 3). The tensor component a_xx shows that 78% to 89% of the fibers are oriented in the filling direction (x direction). No more than 11% of the fibers lie in the y and z directions (perpendicular to the filling direction and in the thickness direction) |
| En ligne : |
https://drive.google.com/file/d/1_pmprepS3Tkh3X4UtYU1hfBWvZrJYf5S/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32455 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 109, N° 4 (04/2019) . - p. 41-44
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Direction-dependent characteristics in KUNSTSTOFFE INTERNATIONAL, Vol. 109, N° 4 (04/2019)
