Abstract
This paper presents the results of the analysis of acoustic emission signals (AE) recorded during the propagation of sound waves in rock samples. The sources are excited by breaking a 3-mm-thick pencil lead (Hsu-Nielsen) on the surface of the rock samples at different AE source locations. Ten repetitions of pencil lead fracturing were performed at a given location. A VS150-M piezoelectric sensor with a frequency range of 100–450 kHz was attached to the upper surface of the rock samples. The results showed that the AE energy and the average frequency of the acoustic emission signals in the rock samples decreased with increasing distance from the AE source locations. These results can be used to establish a relationship between the characteristics of the acoustic emission signals and different rock types at different AE source locations.
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This article is an invited paper selected from presentations at the 5th Symposium on Damage Mechanism in Materials and Structures (SDMMS 20–21), held March 8–9, 2021 in Penang, Malaysia and has been expanded from the original presentation.
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Hashim, K.A., Nor, N.M., Abdullah, S. et al. Determination of Acoustic Emissions Data Characteristics under the Response of Pencil Lead Fracture Procedure. J Fail. Anal. and Preven. 21, 2064–2071 (2021). https://doi.org/10.1007/s11668-021-01293-6
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DOI: https://doi.org/10.1007/s11668-021-01293-6