2026-08-06T12:11:17Z https://icatplus.esrf.fr/oaipmh/request

oai:icatplus.esrf.fr:inv/2437810247 2026-07-17T06:00:20.723Z

4.2 EI 10.15151/ESRF-ES-2437810247 JEAN-BAPTISTE JACOB Jean-Baptiste Jacob 0000-0002-2783-4756 François RENARD François Renard 0000-0002-5125-5930 Hui YANG Hui Yang 0000-0003-1252-9000 JEAN-BAPTISTE JACOB Jean-Baptiste Jacob 0000-0002-2783-4756 Hui YANG Hui Yang 0000-0003-1252-9000 Benoît CORDONNIER Benoît Cordonnier 0000-0001-8632-3844 Benoît CORDONNIER Benoît Cordonnier 0000-0001-8632-3844 François RENARD François Renard 0000-0002-5125-5930 Haixing FANG Haixing Fang 0000-0001-8114-5276 Example Institute 2029 Data from large facility measurement 2026-07-15T06:00:00Z/2026-07-17T06:00:00Z 2026-07-17T06:00:00Z I CC-BY-4.0 Predicting brittle failure in rocks is critical for earthquake hazard assessment, geothermal energy production, and safe geological storage of CO₂ or hazardous wastes. Recent 4D X-ray microtomography (4DXCT) studies have revealed how microfractures nucleate and grow beyond yielding, but they cannot capture the local stress fields driving fracture initiation and propagation. Here, we will combine 4DXCT with scanning 3D X-ray diffraction (s3DXRD) to monitor in situ microfracture development and internal stress evolution in sandstone cores under uniaxial compression. This approach will allow us to directly test how stress heterogeneities control fracture nucleation and how long-range elastic interactions between fractures drive their coalescence into localized faults. The results will provide new micromechanical insight into brittle failure and deliver internal stress measurements to constrain data-driven models of rock failure.