Article (Scientific journals)
Measurement of shrinkage and cracks associated to convective drying of soft materials by X-ray microtomography
Léonard, Angélique; Blacher, Silvia; Marchot, Pierre et al.
2004In Drying Technology, 22 (7), p. 1695-1708
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Keywords :
x-ray microtomography; convective drying; shrinkage; cracks; image analysis
Abstract :
[en] Traditionally, the measurement of shrinkage occurring during drying is performed by destructive or poorly accurate techniques such as volume displacement methods. Cracks detection and quantification are realised either by destructive techniques or sophisticated but expensive nondestructive ones (NMR imaging). X-ray microtomography in combination with image analysis provides an accurate, nondestructive and easy to use technique to determine simultaneously shrinkage and crack extent. Results reported in this article concern drying of wastewater sludges whose management will become a real challenge in the years to come. These results show a clear relation between drying kinetics and crack development. This could be related to the development of internal diffusional limitations inducing moisture gradients and mechanical stresses leading to cracks formation.
Disciplines :
Chemical engineering
Mechanical engineering
Author, co-author :
Léonard, Angélique  ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Opérations physiques unitaires - Département de chimie appliquée
Blacher, Silvia ;  Université de Liège - ULiège > Département de chimie appliquée > Labo de génie chimique
Marchot, Pierre ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Systèmes polyphasiques
Pirard, Jean-Paul ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique
Crine, Michel ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Opérations physiques unitaires
Language :
English
Title :
Measurement of shrinkage and cracks associated to convective drying of soft materials by X-ray microtomography
Alternative titles :
[fr] Mesure du retrait et des fissures associés au séchage convectif de matériaux déformables par microtomographie à rayons X
Publication date :
2004
Journal title :
Drying Technology
ISSN :
0737-3937
eISSN :
1532-2300
Publisher :
Marcel Dekker Inc, New York, United States - New York
Volume :
22
Issue :
7
Pages :
1695-1708
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 04 February 2009

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