Acoustic emission characterization of the fracture process in fibre reinforced concrete

Aggelis, Dimitrios G.; Soulioti, D. V.; Sapouridis, N.; Barkoula, N.-M.; Paipetis, Alkiviadis S.; Matikas, Theodore E.

doi:10.1016/j.conbuildmat.2011.04.049

Cited by 223 publications

(105 citation statements)

References 18 publications

(25 reference statements)

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“…RA value exhibits an explosive increase when fiber pull-out events result after extensive matrix cracking (Soulioti et al 2009, Aggelis et al 2011a. The same trend has been seen in concrete containing polymer fibers, as studied by the inverse of RA, namely "grade" of the waveform ).…”

Section: Resultssupporting

confidence: 55%

“…2 . This has been shown in a number of studies concerning different kinds of materials like rock (Shiotani 2006), concrete (Ohno and Ohtsu 2010, Soulioti et al 2009, Aggelis et al 2011a, metals (Aggelis et al 2011b) and composite laminates (Aggelis et al 2010b). It originates from the different elastic wave modes (longitudinal and shear) that are emitted from the mode I excitation (opposing movement of the crack faces) and mode II (sliding movement) respectively (Aggelis et al 2010c).…”

Section: Introductionmentioning

confidence: 99%

“…A parameter that has extensively been used for characterization of the fracture mode mostly depends on the shape of the initial part of the waveform. The ratio of A over RT, which is the "rise angle" or "grade" Philippidis 1995, Philippidis et al 1998) of the waveform, is recently utilized in the form of RA value , Ohtsu and Tomoda 2008, Soulioti et al 2009, Aggelis et al 2011a. This value is precisely the inverse of grade (rise time over the Amplitude measured in μs/V) (Ohno and Ohtsu 2010).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Damage Assessment in Fibrous Composites Using Acoustic Emission

Paipetis¹,

Aggelis²

2012

Acoustic Emission

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Section: Resultssupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Damage Assessment in Fibrous Composites Using Acoustic Emission

Paipetis¹,

Aggelis²

2012

Acoustic Emission

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“…The acoustic emission (AE) technique has been extensively used for real time detection of internal damage propagation in structural materials [17][18][19][20]. In this technique, piezoelectric sensors are used to detect high-frequency mechanical waves produced from the release of strain energy during fracture and crack propagation.…”

Section: Frp Debonding Detection With Aementioning

confidence: 99%

Debonding damage analysis in composite-masonry strengthening systems with polymer- and mortar-based matrix by means of the acoustic emission technique

Verstrynge

Wevers

Ghiassi

et al. 2015

Smart Mater. Struct.

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This is the postprint of a paper published as: Verstrynge, E., Wevers, M., Ghiassi, B., Lourenço, P. (2016 ABSTRACT: Different types of strengthening systems, based on fiber reinforced materials, are under investigation for external strengthening of historic masonry structures. A full characterization of the bond behavior and of the short-and long-term failure mechanisms is crucial to ensure effective design, compatibility with the historic substrate and durability of the strengthening solution. Therein, nondestructive techniques are essential for bond characterization, durability assessment and on-site condition monitoring. In this paper, the Acoustic Emission (AE) technique is evaluated for debonding characterization and localization on Fiber Reinforced Polymer (FRP)-and Steel Reinforced Grout (SRG)-strengthened clay bricks. Both types of strengthening systems are subjected to accelerated ageing tests under thermal cycles and to single-lap shear bond tests. During the reported experimental campaign, AE data from the accelerated ageing tests demonstrated the thermal incompatibility between brick and epoxy-bonded FRP composites and debonding damage was successfully detected, characterized and located. In addition, a qualitative comparison is made with digital image correlation and infrared thermography, in view of efficient on-site debonding detection.

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“…Acoustic emission (AE) is a natural phenomenon wherein materials or structures release strain energies through elastic waves upon deformation or damage under external or internal stresses [1][2]. AE technology evaluates material performance by analyzing its AE characteristics and forming timely responses to dynamic changes of micro damage energies of the material.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on Acoustic Emission Characteristics of High Performance Concrete Beam with Nano SiO2

Liu¹,

Xinga²,

Gao³

2017

Proceedings of the 2017 6th International Conference on Energy and Environmental Protection (ICEEP 2017)

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Abstract.Variations in the acoustic emission parameters of normal concrete (NC), steel fiber reinforced concrete (SFRC), and nano SiO 2 fiber concrete (NSFC) with the increase in loads under four-point bending load were studied. Distribution law of acoustic emission signals and its correlations with flexural strength and breaking energy of the concrete were discussed. The energy jump of acoustic emission (AE) signals reflects abrupt changes in the load and displacement of specimens. The first change point on the time of arrival (TOA)-energy curve corresponds to the load and displacement of the initial cracking point of the load-displacement curve. Nano SiO 2 significantly enhances the strength of AE signals, thereby prolonging the duration of an AE event. An extended AE event is conducive to accurately determining the initial cracking point. Compared with steel fiber-reinforced concrete (SFRC), nano SiO 2 steel fiber-reinforced concrete (NSFC) exhibits greater toughness and bending strength. The addition of nano SiO 2 leads to a more stable AE test result, which is beneficial for identifying the initial cracking point and critical failure point of a concrete beam, determining the initial load and ultimate bearing capacity of the beam, and providing an early warning against possible structural failures.

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Acoustic emission characterization of the fracture process in fibre reinforced concrete

Cited by 223 publications

References 18 publications

Damage Assessment in Fibrous Composites Using Acoustic Emission

Damage Assessment in Fibrous Composites Using Acoustic Emission

Debonding damage analysis in composite-masonry strengthening systems with polymer- and mortar-based matrix by means of the acoustic emission technique

Experimental Research on Acoustic Emission Characteristics of High Performance Concrete Beam with Nano SiO2

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