| Titre : |
Finding numbers for sparkle and shine : Three-dimensional measurements characterise appearance of effect coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Reinhard Feld, Auteur |
| Année de publication : |
2009 |
| Article en page(s) : |
p. 18-22 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Colorimétrie
|
| Tags : |
'Revêtements à effets' 'Mesure tridimensionnelle' 'Spectrophotométrie multiangle' |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
At present, only complex research instruments can accurately characterise the appearance of effect coatings. A new multi-angle portable spectrophotometer incorporates detectors which are out of the plane of illumination and reflection. This complex data is simplified mathematically, so that overall colour tolerance limits can be set which take into account the appearance of a coating from all angles. |
| Note de contenu : |
- Effect measurement needs a three-dimensional approach
- Advanced optical theory forms basis of test method
- Complexity of data must be reduced for rapid results
- Data points represent a probability distribution
- Vector addition reduces number of data points
- Complex coatings viewed as simple 'virtual materials'
- Colour tolerances for appearance from all angles
- Process and formulation changes distinguished
- FIGURES : 1. Représentation of the illumination and viewing angles used to create and xDNA profile - 2. Graphical representation of the (y,z) projection of two xDNA three-dimensional profiles
- Table 1 : Example of a set of data points used to create an xDNA profile |
| En ligne : |
https://drive.google.com/file/d/1l2whN-5mtb-7Yhql7IEyHwyuqliNa37l/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24198 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 2/2009 (02/2009) . - p. 18-22
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