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Une adaptation du traitement d'images numériques de lames minces a l'analyse de la structure d'un gres a divers stades de la compression

Gamond J. F., Młynarczuk M., Obara B.

Studia Geotechnica et Mechanica

2008

Vol. 30, nr 1-2

287-294

Experimentally deformed sandstone specimens are used to study the onset, localization and mature stages of faults and fractures. These rupture mechanisms are studied through image processing of thin sections. Poorly defined grain boundaries, often observed in our sandstones, necessitate to create a specific processing algorithm. It allows us to quantify the changes of the grain size on each thin section, aspect ratio and preferred orientation generated by the progressive localization of the shear band.