METROLOGY
Impact of MEtamorphic TRansformations On the rheoLOGY of rocks
About the project
Our project is dedicated to quantifying the feedbacks between reaction thermodynamics and mechanical properties of rocks. New cutting-edge numerical models will be developed, constrained by state-of-the-art laboratory experiments.
This website presents the objectives, strategy, scientific consortium and findings of an interdisciplinary project accepted for funding (ANR-23-CE49-0008) by the National Agency for Scientific Research (ANR) in the framework of the generic call for projects 2023 CES 49 (axis G.1) – Planetology, structure and history of Earth
The ambition of METROLOGY is to go further in the pairing of numerical models and laboratory experiments, a new trend in rock mechanics. Models will be used to track if conditions to initiate phase transformations are met, but also to study the mechanical consequences of the transformation: strain localisation and mechanical instabilities.
To constrain the models, laboratory tests on two emblematic reactions will be performed. Effective strength evolution will be monitored together with acoustic emissions that reveal fracturing in the sample ! Evolution of elastic wave velocities will also enable us to monitor the transformation extent in situ.
Result from a laboratory experiment
Potential impacts in tectonics, seismic risk assessment, material science and even nuclear waste disposal are significant.