Adaptive neutron radiography correlation for simultaneous imaging of moisture transport and deformation in hygroscopic materials

Sanabria, S. J.; Lanvermann, C.; Michel, F.; Mannes, D.; Niemz, Peter (2015). Adaptive neutron radiography correlation for simultaneous imaging of moisture transport and deformation in hygroscopic materials Experimental Mechanics, 55(2), pp. 403-415. 10.1007/s11340-014-9955-2

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Neutron radiography is a key non-destructive testing technology for the investigation of moisture transport in materials. However, quantitative moisture measurements in swelling materials are currently challenging due to the lack of referencing between moist and dry state radiographs. A novel adaptive texture correlation algorithm is presented to simultaneously image inhomogeneous moisture distributions and moisture-induced strain fields. The proposed method provides a valuable tool for the study of time- and position-dependent hygromechanical interactions. Moreover, it requires no modification of existing neutron installations. The method was validated against gravimetric moisture content and optic surface deformation measurements. Its applicability was demonstrated for two actual topics in wood science, the investigation of moisture gradients within the growth ring microstructure and the study of moisture transport processes in wood-fiber composites. The algorithm can be widely used to characterize hygroscopic materials with heterogeneous texture, as frequently found in wood constructions, food industry, engineering and soil science.

Item Type:

Journal Article (Original Article)

Division/Institute:

Architecture, Wood and Civil Engineering
Architecture, Wood and Civil Engineering > Institute for Materials and Wood Technology
BFH Centres > BFH Centre for Wood - Resource and Material

Name:

Sanabria, S. J.;
Lanvermann, C.;
Michel, F.;
Mannes, D. and
Niemz, Peter

Subjects:

Q Science > Q Science (General)
Q Science > QC Physics
T Technology > T Technology (General)

ISSN:

0014-4851

ISBN:

1134001499552

Submitter:

Christelle Ganne-Chédeville

Date Deposited:

21 Apr 2020 11:19

Last Modified:

26 Apr 2020 01:32

Publisher DOI:

10.1007/s11340-014-9955-2

Uncontrolled Keywords:

heterogeneous mechano-sorptive rheology moisture-induced deformation strains non-destructive neutron imaging texture correlation wood composite materials

URI:

https://arbor.bfh.ch/id/eprint/11295

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