Acoustic signature of different fracture modes in marble and cementitious materials under flexural load |
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| Institution: | 1. Department of Mechanics of Materials and Constructions, Free University of Brussels, Pleinlaan 2, 1050 Brussels, Belgium;2. Department of Materials Science and Engineering, University of Ioannina, Ioannina 45110, Greece;1. Institute for Risk and Disaster Reduction, University College London, Gower Street, London, UK;2. Technological Educational Institute of Crete, Laboratory of Geophysics & Seismology, Chania, Crete, Greece;1. School of Instrument Science and Opto-electronics Engineering, Beijing Information Science & Technology University, Beijing 100192, China;2. Department of Civil and Materials Engineering, University of Illinois at Chicago, Chicago, IL 60607, USA;3. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China;1. Norwegian Geotechnical Institute, Sognsveien 72, 0806 Oslo, Norway;2. NORSAR, Gunnar Randers vei 15, 2007 Kjeller, Norway;3. Institute of Geophysics, Academy of Sciences, Boční II/1401, Praha 4, 141 00 Praha, Czech Republic;1. Institute of Deep Earth Sciences and Green Energy, Shenzhen University, China;2. Institute of New Energy and Low-Carbon Technology, Sichuan University, China;3. MOE Key Laboratory of Deep Underground Science and Engineering, Sichuan University, China;4. Department of Civil and Environmental Engineering, Northwestern University, USA;1. Technological Educational Institute of Crete and UNESCO Chair on Solid Earth Physics and Geohazards Risk Reduction, Chania, Crete, Greece;2. University of West Attica, Athens, Greece |
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| Abstract: | The present study deals with the examination of the acoustic emission signatures of distinct fracture modes. Tensile and mixed mode cracking is excited in specimens of marble and cement mortar and the acoustic emission behavior is monitored. Tensile cracking incidents show a preference to higher frequencies and shorter waveforms unlike shear events. The results imply that adequate analysis of simple AE features enables the characterization of the current fracture condition of the material and consequently predictions on the remaining safe service life for monolithic, as well as microstructured materials. |
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