Fracture and Structural Integrity e-ISSN 1971-8993 Open access
SI: Research activities of the Greek Society of Experimental Mechanics of Materi Vol. 13, No. 50 (2019)

Fracture precursor phenomena in marble specimens under uniaxial compression by means of Acoustic Emission data

Author and affiliation details
  • Dimos Triantis Corresponding author University of West Attica, Department of Electrical and Electronic Engineering, Laboratory of Electronic Devices and Materials, 250 Thivon Avenue, Campus 2, 122 44, Athens, Greece triantis@uniwa.gr
  • Stavros Kourkoulis National Technical University of Athens, School of Applied Mathematical and Physical Sciences, Department of Mechanics, Laboratory for Testing and Materials, 5 Heroes of Polytechnion Avenue, Theocaris Bld., Zografou Campus, 157 73 Athens, Greece
DOI
10.3221/IGF-ESIS.50.45
Pages
537-547
Published
Published inVol. 13, No. 50 (2019)Go to the issue

Abstract

Marble specimens are subjected to a specially designed stepwise load­­ing protocol, in an attempt to detect fracture precursor phenomena taking advantage of Acoustic Emission (AE) data. The analysis is carried out in terms of the number of acoustic hits recorded and the time evolution of the improved b-value (Ib-value), the cumulative energy of the acoustic signals and the F-fun­c­tion. During the stage of in­creasing load, intense acoustic activity is detected as the cor­responding stress reaches the transitional phase from the linear to the nonlinear mechanical re­sponse of the material. When the stress is stabilized at levels exceeding 95% of the material’s compressive strength, the acous­tic activ­ity is drastically reduced. During the first seconds of the stress stabil­iz­ation stage the reduction follows an exponential law. Special attention is paid to the phases, where the occurrence of AE hits shows a strong increase. During these phases acoustic signals of low frequency and high RA are re­corded, in­di­cating that the micro-cracking process is of shear rather than of opening mode.

Keywords

Article history

  1. ReceivedUntil the next stage: 4 days
  2. AcceptedUntil the next stage: 0 days
  3. Published

How to cite

APA

Triantis, D., & Kourkoulis, S. (2019). Fracture precursor phenomena in marble specimens under uniaxial compression by means of Acoustic Emission data. Fracture and Structural Integrity, 13(50), 537–547. https://doi.org/10.3221/IGF-ESIS.50.45

IEEE

D. Triantis and S. Kourkoulis, “Fracture precursor phenomena in marble specimens under uniaxial compression by means of Acoustic Emission data,” Fracture and Structural Integrity, vol. 13, no. 50, pp. 537–547, 2019, doi: 10.3221/IGF-ESIS.50.45.

MLA

Triantis, Dimos, and Stavros Kourkoulis. “Fracture precursor phenomena in marble specimens under uniaxial compression by means of Acoustic Emission data.” Fracture and Structural Integrity, vol. 13, no. 50, 2019, pp. 537–547. https://doi.org/10.3221/IGF-ESIS.50.45.

Chicago

Triantis, Dimos, and Stavros Kourkoulis. 2019. “Fracture precursor phenomena in marble specimens under uniaxial compression by means of Acoustic Emission data.” Fracture and Structural Integrity 13 (50): 537–547. https://doi.org/10.3221/IGF-ESIS.50.45.

Harvard

Triantis, D. and Kourkoulis, S. (2019) ‘Fracture precursor phenomena in marble specimens under uniaxial compression by means of Acoustic Emission data’, Fracture and Structural Integrity, 13(50), pp. 537–547. doi: 10.3221/IGF-ESIS.50.45.

Vancouver

Triantis D, Kourkoulis S. Fracture precursor phenomena in marble specimens under uniaxial compression by means of Acoustic Emission data. Fracture and Structural Integrity. 2019;13(50):537-547. doi:10.3221/IGF-ESIS.50.45

BibTeX

@article{triantis2019, author = {Triantis, Dimos and Kourkoulis, Stavros}, title = {Fracture precursor phenomena in marble specimens under uniaxial compression by means of Acoustic Emission data}, journal = {Fracture and Structural Integrity}, year = {2019}, volume = {13}, number = {50}, pages = {537--547}, doi = {10.3221/IGF-ESIS.50.45}, url = {https://doi.org/10.3221/IGF-ESIS.50.45}, issn = {1971-8993} }

RIS

TY - JOUR AU - Triantis, Dimos AU - Kourkoulis, Stavros TI - Fracture precursor phenomena in marble specimens under uniaxial compression by means of Acoustic Emission data JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2019 DA - 2019/09/03 VL - 13 IS - 50 SP - 537 EP - 547 DO - 10.3221/IGF-ESIS.50.45 UR - https://doi.org/10.3221/IGF-ESIS.50.45 SN - 1971-8993 ER -

Licence

Copyright © 2019 Dimos Triantis, Stavros Kourkoulis.

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