Stanford Acoustic Emission Data set

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Abstract/Contents

Abstract: The acoustic emission (AE) data set is from a triaxial compression test conducted in a triaxial loading vessel equipped with a network of AE sensors . In the compression test, a cylindrical Berea sandstone specimen (diameter: 25.14 mm; length: 49.45 mm) was increasingly loaded up to failure at an axial strain rate of 1.03×10-5 /s under a constant confining pressure of 5 MPa. During the axial loading process, AE waveforms were detected by ten PZT-5A compressional crystal sensors manufactured by Boston Piezo-Optics Inc. The setup uses an Elsys acquisition system to amplify, digitize and record the waveforms, which consists of an AE-Amp Pre-amplifier (model Amp-BU-20-AE) and a High-Speed Data Acquisition (model TranNET EPC) module. We set a 40 dB pre-amplification gain and 5 kHz – 2MHz bandpass filtering. The sampling rate of waveforms was 10 MHz. The time length of each waveform was 250 μs, comprising a pre-trigger length of 50 μs and a post-trigger length of 200 μs. Here, the term “trigger” refers to one channel of the AE system being activated once the acquired waveforms meet a triggering criterion set by the user. We set the trigger level at 0.5 V and the trigger mode to use the positive slope mode. After acquiring the AE data, we manually picked the P-wave arrivals of 49,212 waveforms. To request AE waveform data, please contact Tian Yang Guo (guoty@stanford.edu) and Tiziana Vanorio (tvanorio@stanford.edu).

DOI	https://doi.org/10.25740/mz374gr4108
Location	https://purl.stanford.edu/mz374gr4108

Use and reproduction: User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
License: This work is licensed under a Creative Commons Attribution 4.0 International license (CC BY).

Preferred citation: Guo, T., Vanorio, T., and Ding, J. (2024). Stanford Acoustic Emission Data set. Stanford Digital Repository. Available at https://purl.stanford.edu/mz374gr4108. https://doi.org/10.25740/mz374gr4108.

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