| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ketoja, Jukka A.
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2022Lignin interdiffusion - a mechanism behind improved wet strength
- 2022Utilizing and Valorizing Oat and Barley Straw as an Alternative Source of Lignocellulosic Fiberscitations
- 2022Utilizing and Valorizing Oat and Barley Straw as an Alternative Source of Lignocellulosic Fiberscitations
- 2021General mean-field theory to predict stress-compression behaviour of lightweight fibrous materials
- 2020Crossover from mean-field compression to collective phenomena in low-density foam-formed fiber materialcitations
- 2018Foam-formed fibre materials
- 2018Effect of cellulosic fibers on foam dynamics
- 2017Novel biobased micro- and nanomaterials in porous foam formed structures
- 2017Design-driven integrated development of technical and perceptual qualities in foam-formed cellulose fibre materialscitations
- 2017Design-driven integrated development of technical and perceptual qualities in foam-formed cellulose fibre materialscitations
- 2016Tailoring the microporous structure of fibre materials with foam carrier
- 2016Porous structure of fibre networks formed by a foaming process: a comparative study of different characterization techniquescitations
- 2015The effect of physical adhesion promotion treatments on interfacial adhesion in cellulose-epoxy
- 2014Wet fibre-laden foams in axial mixing with macro-instabilities
- 2013Bubble size and air content of wet fibre foams in axial mixing with macro-instabilitiescitations
- 2009Wet Web Rheology on a Paper Machine
- 2008Simulation of triaxial deformation of wet fiber networkscitations
Places of action
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article
Crossover from mean-field compression to collective phenomena in low-density foam-formed fiber material
Abstract
| openaire: EC/H2020/857470/EU//NOMATEN ; We study the compression of low-weight foam-formed materials made out of wood fibers. Initially the stress-strain behavior follows mean-field like response, related to the buckling of fiber segments as dictated by the random three-dimensional geometry. Our Acoustic Emission (AE) measurements correlate with the predicted number of segment bucklings for increasing strain. However, the experiments reveal a transition to collective phenomena as the strain increases sufficiently. This is also seen in the gradual failure of the theory to account for the stress-strain curves. The collective avalanches exhibit scale-free features both as regards the AE energy distribution and the AE waiting time distributions with both exponents having values close to 2. In cyclic compression tests, significant increases in the accumulated acoustic energy are found only when the compression exceeds the displacement of the previous cycle, which further confirms other sources of acoustic events than fiber bending. ; Peer reviewed