RT Journal Article
T1 Experimental application and accuracy assessment of 2D-DIC in meso-direct-shear test of sandy soil
A1 Alhakim, Ghida
A1 Núñez Temes, Carlos
A1 Ortiz Sanz, Juan
A1 Arza García, Marcos
A1 Jaber, Lina
A1 Gil Docampo, María de la Luz
K1 Direct shear test
K1 Digital Image Correlation
K1 Strain localization
K1 Shear band
K1 New shear box
K1 Noise-floor
AB The examination of the meso-mechanical properties of soils is fundamental to understand its macro-behaviour. This paper aims to evaluate the potential application of Digital Image Correlation (DIC), an optical image processing approach, in direct shear test (DST) for soils. Hence, a new shear box was designed to investigate the close behaviour of granular materials. The noise-floor and shear displacement accuracy were discussed to assess the reliability of DIC, besides the effectiveness of the new box was also examined. The distribution of the displacements, strains, and shear angle were measured under four different normal stresses. From the results, the immediate settlement, and the dilative behaviour of the sand during shearing were observed. Furthermore, the investigation revealed a strain concentration at the interface between the boxes, where a shear band was formed. The use of DIC opens up new ways in soil mechanics, overcoming some limitations of the conventional DST
PB Elsevier
YR 2023
FD 2023
LK http://hdl.handle.net/10347/30613
UL http://hdl.handle.net/10347/30613
LA eng
NO Measurement 211 (2023) 112645
NO This work was supported by the regional government of Galicia (Xunta de Galicia, Spain) under the grant “Financial aid for the consolidation and structure of competitive units of investigation in the universities of the University Galician System (2020-22)” Ref. ED341B 2020/25. The work was also supported by the individual grants of the EU Commission under the program Erasmus+ KA107 with a mobility grant awarded to Ghida Alhakim and by the Xunta de Galicia with the postdoctoral grant awarded to Marcos Arza-García (ED481B 2022/075)
DS Minerva
RD 24 abr 2026