Laboratory hydraulic fracture characterization using acoustic emission
For many years acoustic emission (AE) testing has aided in the understanding of fracture initiation and propagation in materials ranging from high strength steel to polymers to composite and geologic materials. Acoustic emissions are the phenomenon in which a material or structure emits elastic waves caused by the sudden occurrence of fractures or frictional sliding along discontinuous surfaces and grain boundaries. Throughout this project AE monitoring has been employed during laboratory hydraulic fracturing tests for the purpose of Enhanced Geothermal Systems (EGS) reservoir creation, as well ...
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