We study the specific features of acoustic-emission signals accompanying the macrofractures of materials with different structures. For this purpose, we use the results of the analysis of the local features of acoustic-emission signals by using their continuous wavelet transforms. According to the criterion used for the identification of the types of macrofracture, we analyze brittle, ductile-brittle, and ductile fractures. We also establish the typical differences between signals according to the frequency bandwidth, duration of emission, and changes in the values of predominant frequency.
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 49, No. 6, pp. 119–126, November–December, 2013.
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Nazarchuk, Z.T., Skal’s’kyi, V.R. & Stankevych, O.M. A Method for the Identification of the Types of Macrofracture of Structural Materials by the Parameters of the Wavelet Transform of Acoustic-Emission Signals. Mater Sci 49, 841–848 (2014). https://doi.org/10.1007/s11003-014-9682-y
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DOI: https://doi.org/10.1007/s11003-014-9682-y