Reliability assessment of the NDT results for the internal damage of marble specimens

Kourkoulis, Stavros K.; Prassianakis, I.N.; Agioutantis, Z.; Exadaktylos, G.

doi:10.1504/ijmpt.2006.008979

Cited by 23 publications

(16 citation statements)

References 16 publications

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“…it is characterized by three different anisotropy directions. However, it can be approximately considered as a transversely isotropic material described adequately with the aid of five elastic constants as it was definitely concluded by detailed experimental protocols including direct tension and compression tests as well as three-point bending and Brazilian Disc tests [22][23][24][25][26][27][28][29]. The as above experimental protocols revealed also that Dionysos marble is slightly non-linear (both in the tension and in the compression regime) and slightly bimodular, i.e.…”

Section: Methodsmentioning

confidence: 93%

Correlation between the electric and acoustic signals emitted during compression of brittle materials

Pasiou¹,

Triantis²

2017

Frattura Ed Integrità Strutturale

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ABSTRACT. An experimental protocol is described including a series of uniaxial compression tests of three brittle materials (marble, mortar and glass). The Acoustic Emission (AE) technique and the Pressure Stimulated Currents (PSC) one are used since the recordings of both techniques are strongly related to the formation of cracking in brittle materials. In the present paper, the correlation of these techniques is investigated, which is finally proven to be very satisfactory.

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Section: Methodsmentioning

confidence: 93%

Correlation between the electric and acoustic signals emitted during compression of brittle materials

Pasiou¹,

Triantis²

2017

Frattura Ed Integrità Strutturale

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“…in the vicinity of the load application point. Although this parasitic field strongly distorts the overall stress field, both numerical and experimental evidence exist indicating that this distortion attenuates rapidly [39,40] (i.e. the area affected is less than 20% of the cross-section height).…”

Section: Materials and Experimental Setupmentioning

confidence: 99%

Predicting fracture of mortar beams under three-point bending using non-extensive statistical modeling of electric emissions

Stergiopoulos

Triantis

Vallianatos

et al. 2015

Physica A: Statistical Mechanics and its Applications

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“…The differences are quite strong, as there is no overlap between the clusters, while there is also a weak (but not negligible) correlation within each cluster. In any case, the sensitivity of pulse velocity to the stiffness and indirectly to the strength of the engineering materials is well known [22,23].…”

Section: Ultrasonicsmentioning

confidence: 99%

Acoustic Emission Activity for Characterizing Fracture of Marble under Bending

2015

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Abstract:The present paper occupies with the acoustic emission (AE) monitoring of fracture of marble. The specimens belong to two different material types and were tested in three-point bending after being ultrasonically interrogated. Consequently, they were repaired by means of suitable epoxy agent and mechanically re-loaded. Apart from the well-known correlation of pulse velocity to strength, which holds for the materials of this study as well, AE provides some unique insight in the fracture of the media. Parameters like the frequency content of the waveforms, and their duration among others show a transition in relation to the load. According to their strength class, the specimens exhibit distinct AE characteristics even at low load, enabling to judge their final strength class after having sustained just a small percentage of their ultimate capacity. More importantly, the AE activity during reloading indicates the quality of repair; specimens with good restoration of strength, exhibited similar AE activity to the intact specimens, while specimens with lower repaired capacity exhibited random behavior. This work discusses the passive monitoring of marble fracture and shows that AE parameters that have been used to successfully characterize cementitious materials, provide good results in monolithic materials like marble as well. It is suggested that AE monitoring during a proof loading can provide good information on the potential strength class, which is especially useful for repaired specimens, where the pulse velocity cannot be easily used.

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Reliability assessment of the NDT results for the internal damage of marble specimens

Cited by 23 publications

References 16 publications

Correlation between the electric and acoustic signals emitted during compression of brittle materials

Correlation between the electric and acoustic signals emitted during compression of brittle materials

Predicting fracture of mortar beams under three-point bending using non-extensive statistical modeling of electric emissions

Acoustic Emission Activity for Characterizing Fracture of Marble under Bending

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