Combined full ﬁeld stress and strain measurement methods for granular materials
Delft University of Technology, Geo-Engineering Section, P.O.
Box 5048, 2600 GA Delft, The Netherlands
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The current paper re-introduces the photoelastic measurement method in experimental geomechanics. A full-ﬁeld phase stepping polariscope suitable for geomechanical model tests has been developed. Additional constraints on the measurement and mechanical setup arising from geomechanical test conditions are outlined as well as the opportunity to measure the displacement ﬁelds in the sample with digital image correlation. The capability of the current setup in retrieving the stress and strain ﬁeld in a granular material is demonstrated.
© Owned by the authors, published by EDP Sciences, 2010