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Analysis of compaction in brittle foam with multiscale indentation tests

Authors :
Eric Maire
Xavier Brajer
E. Gouillart
Stéphane Roux
Amine Bouterf
Elodie Boller
François Hild
Laboratoire de Mécanique et Technologie (LMT)
École normale supérieure - Cachan (ENS Cachan)-Centre National de la Recherche Scientifique (CNRS)
Saint-Gobain Recherche (SGR)
SAINT-GOBAIN
Matériaux, ingénierie et science [Villeurbanne] (MATEIS)
Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL)
Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon)
Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)
Surface du Verre et Interfaces (SVI)
Centre National de la Recherche Scientifique (CNRS)-SAINT-GOBAIN-Université Pierre et Marie Curie - Paris 6 (UPMC)
European Synchrotron Radiation Facility (ESRF)
ANR-11-BS09-0027,EDDAM,Elaboration, démixtion et déformation des matériaux amorphes suivies par microtomographie in-situ(2011)
Source :
Mechanics of Materials, Mechanics of Materials, Elsevier, 2018, 118, pp.22-30. ⟨10.1016/j.mechmat.2017.12.004⟩
Publication Year :
2018
Publisher :
Elsevier BV, 2018.

Abstract

International audience; Lightweight plasterboard is a product composed of plaster foam core whose porosity can reach 75 vol%, lined with two sheets of paper. To optimize the trade-o between thermal resistance and mechanical strength, it is important to understand and characterize the mechanical behavior of plasterboard. Core compaction of plasterboard is one of the prevalent degradation mechanism. This mechanism is studied herein using in-situ indentation experiments performed at two dierent scales. The rst test was carried out in a lab tomograph. The second test was conducted on the high resolution synchrotron ID19 beamline at ESRF. Very early damage is revealed. The basic mechanism of pore collapse and its gradual development is detected in contrast with mesoscale observations where compaction appears very abrupt.

Details

ISSN :
01676636
Volume :
118
Database :
OpenAIRE
Journal :
Mechanics of Materials
Accession number :
edsair.doi.dedup.....ef52002e70d17d1809f6d61530be21ed
Full Text :
https://doi.org/10.1016/j.mechmat.2017.12.004