Directional Cooling-Induced Fracturing (DCIF) experiments were conducted on rectangular Westerly granite blocks (width=depth=4.0", height=2.0"). Liquid nitrogen was poured in a small, 1"-diameter copper cup attached to the top of the sample, and the resulting acoustic emissions (AEs) and temperature changes on the surface of the sample were monitored. Several confining stresses were applied bi-axially to the sides of the samples so that the onset of AE activity and the stress applied to the sample were correlated. The obtained AEs were used to determine the microcracking source locations and amplitude, and the associated moment tensors. Included in this submission are the animations of the AE locations and graphics displaying the measured temperature-AE activity changes for different stresses.
- TXTDCIF Acoustic Emission Location Block F.TXT
- TXTDCIF Acoustic Emission Location Block E.TXT
- TXTDCIF Acoustic Emission Location Block D.TXT
- TXTDCIF Acoustic Emission Location Block C.TXT
- TXTDCIF Block C Thermocouple Measurement Data.TXT
- TXTDCIF Block E Thermocouple Measurement Data.TXT
- tifDCIF Time vs AE Rate Summary.tif
- TXTDCIF Block F Thermocouple Measurement Data.TXT
- DOCXDCIF Stress Test Westerly Granite Metadata.docx
- tifDCIF Time vs Cumulative AE Count Summary.tif
- TXTDCIF Block D Thermocouple Measurement Data.TXT
- aviDCIF Westerly Granite Block E AE Movie.avi
- aviDCIF Westerly Granite Block F AE Movie.avi
- aviDCIF Westerly Granite Block D AE Movie.avi
- aviDCIF Westerly Granite Block C AE Movie.avi