[article]
| Titre : |
Using fracture mechanics to characterize organic coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Mark Nichols, Auteur |
| Année de publication : |
2005 |
| Article en page(s) : |
p. 62-67 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The multitude of ways in which a coating can fail are well known to both users and producers of organic coatings. Many failures are gradual and are aesthetic in nature only, such as gloss loss and color fade. Others are more mechanical in nature such as cracking or peeling. These mechanical failures can lead to a loss of substrate protection or corrosion, which may compromise the structural integrity of the painted component as well as produce an unacceptable appearance. By understanding the manner in which these failures occur one can design coating systems in a more robust fashion to prevent them.
Most of the mechanical failures that occur in coatings are due to cracks propagating within the coating, at an interface between the coating and a substrate, or between two coating layers (Figure 1). To truly understand how these cracks propagate, the principals of fracture mechanics must be applied to the coating system. Fracture mechanics is the discipline that quantitatively describes how cracks propagate in materials and at interfaces. This approach has been used extensively to understand and predict the performance of aluminum aircraft alloys as well as high strength composite materials. Its application to coatings technology was only initiated in the last decade.1,2 However, recent advances have made it a powerful tool to understand the performance of many organic coatings. This article aims to introduce the reader to the principals of fracture mechanics and how the application of these principals to organic coating characterization can improve the durability and performance of coating systems. |
| En ligne : |
https://drive.google.com/file/d/1tdiz5rKWSQdyCWVfxZBKUtZnGtYAv-y4/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5495 |
in COATINGS TECH > Vol. 2, N° 21 (10/2005) . - p. 62-67
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Using fracture mechanics to characterize organic coatings in COATINGS TECH, Vol. 2, N° 21 (10/2005)
