Distribution & Access For Publication Downloads News About Us Contact Us
Paper Titles
AE Characterization of Brick Masonry Walls Mechanical Behavior: The Case-Study of Alessandria and Boves Barracks
p.563
Diagnosis and Structural Assessment of the Assumption of the Virgin Mary Chapel in Prague (CZ)
p.571
AE Damage Assessment in the Bell Tower of the Turin Cathedral
p.579
Health Monitoring of Medieval Masonry Towers by an Acoustic Emission Approach
p.586
Fatigue Analysis of FRP Strengthened Masonry by Acoustic Emission Monitoring
p.594
Influence of Long-Time Work of 19th Century Modern-Type Roof Construction on Technical Condition of Vaults of Gothic Church
p.605
Analysis of the Condition of Damaged Vaults after a Construction Disaster in a Historic Church
p.613
Structural Behaviour of Masonry Vaulted Staircases Using Limit Analysis: The Case Study of the Bell Tower of Santa Maria Delle Vigne
p.621
Damage Assessment of San Francesco Church in Amandola Hit by Central Italy 2016-2017 Seismic Event
p.627

Fatigue Analysis of FRP Strengthened Masonry by Acoustic Emission Monitoring

Article Preview

Abstract:

The safety work of historical and monumental building heritage requires the use of innovative materials compatible with the high architectural value. The Fiber Reinforced Polymers (FRP) represent a valid alternative to traditional ones, and the carbon fiber sheets are very light and easy to glue to the masonry structures. However, the durability of the application of FRP sheets is still uncertain in the long time behavior, especially with regard to cyclic fatigue loads such as seismic ones. In this work an experimental analysis on a set of strengthened masonry walls under fatigue tests (loading and freezing-thawing test) has been carried out in order to evaluate creep effects. During cyclic tests in the laboratory it was possible to monitor the damage pattern through the acoustic emission (AE) technique. The AE monitoring is useful to estimate the amount of energy released from fracture propagation in the adherence surface between masonry and FRP sheet. The different phases of damage evolution are recognized through the analysis of AE data over time. In particular, the time dependence of AE counting number is useful to indicate the beginning of the unstable damage growth and predicts the possible failure of the specimens at the 80% of the test duration. Furthermore, a sudden decay in the AE frequency is detected during the last phase of the fatigue tests. These results illustrate the applicability and the advantages of AE technique for the monitoring of long-term damage growth in strengthened masonry.

You might also be interested in these eBooks
Mechanics of Masonry Structures Strengthened with Composite Materials III View Preview

Info:

Periodical:

Key Engineering Materials (Volume 817)

Pages:

594-601

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.817.594

Citation:

Cite this paper

Online since:

August 2019

Authors:

Alessandro Grazzini*, Giuseppe Lacidogna

Keywords:

Acoustic Emission, CFRP, Cyclic Fatigue Test, Diagonal Compressive Test, Freeze-Thaw Cycles Test, Masonry Structure

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] A. Grazzini, S. Agnetti, Post-seismic effectiveness of the strengthening work carried out with GFRP applied to historical masonry buildings: the case study of the Spoleto Cathedral, Comp. Mat. Research 7 (2018) 1-11.

DOI: 10.18282/cmr.v7i1.524

Google Scholar

[2] M. Corradi M, A. Borri, A.Vignoli, Strengthening techniques tested on masonry structures struck by the Umbria-Marche earthquake of 1997-1998, Constr. Build. Mat. 16 (2002) 229-239.

DOI: 10.1016/s0950-0618(02)00014-4

Google Scholar

[3] P. Bocca, A. Grazzini, D. Masera, A. Alberto, S. Valente, Mechanical interaction between historical brick and repair mortar: experimental and numerical tests, J. of Physics Conf. Series 305 (2011) 1-9.

DOI: 10.1088/1742-6596/305/1/012126

Google Scholar

[4] P. Bocca, S. Valente, A. Grazzini, A. Alberto, Detachment analysis of dehumidified repair mortars applied to historical masonry walls, Int. J. Arch. Heritage 8 (2014) 336-348.

DOI: 10.1080/15583058.2013.826304

Google Scholar

[5] A. Carpinteri, A. Grazzini, G. Lacidogna, A. Manuello, Durability evaluation of reinforced masonry by fatigue tests and acoustic emission technique, Str. Control & Heath Monit. 21 (2014) 950-961.

DOI: 10.1002/stc.1623

Google Scholar

[6] Q. Han, J. Xu, A. Carpinteri, G. Lacidogna, Localization of acoustic emission sources in structural health monitoring of masonry bridge, Str. Control & Heath Monit. 22 (2015) 314-329.

DOI: 10.1002/stc.1675

Google Scholar

[7] D.L. Carnì, C. Scuro, F. Lamonaca, R.S. Olivito, D. Grimaldi, Damage analysis of concrete structures by means of acoustic emissions technique, Composites Part B: Engineering 115 (2017) 79-86.

DOI: 10.1016/j.compositesb.2016.10.031

Google Scholar

[8] F. Lamonaca, A. Carrozzini, D. Grimaldi, R.S. Olivito, Improved monitoring of acoustic emissions in concrete structures by multi-triggering and adaptive acquisition time interval, Measurement 59 (2015) 227-236.

DOI: 10.1016/j.measurement.2014.09.053

Google Scholar

[9] S. Tiberti, C. Scuro, R. Codispoti, R.S. Olivito, G. Milani, Experimental and Numerical Analysis of Historical Aseismic Construction System: An Interdisciplinary Approach, Structural Analysis of Historical Constructions. Springer, Cham, 2019, pp.910-918.

DOI: 10.1007/978-3-319-99441-3_98

Google Scholar

[10] A. Grazzini, G. Lacidogna, S. Valente, F. Accornero, Delamination of plasters applied to historical masonry walls: analysis by acoustic emission technique and numerical model, Conf. Series: Mat. Scien. Eng. 372 (2018) 1-7.

DOI: 10.1088/1757-899x/372/1/012022

Google Scholar

[11] P. Bocca, A. Grazzini, Mechanical properties and freeze-thaw durability of strengthening mortars, J. of Mat. In Civil Eng. 25 (2013) 274-280.

DOI: 10.1061/(asce)mt.1943-5533.0000597

Google Scholar

[12] RILEM, Test of small walls and prism – Diagonal tensile strength, (1988).

Google Scholar

[13] ASTM, Standards test method for diagonal tension (shear) in masonry assemblages, (1981) 519-81.

Google Scholar

[14] P. Bocca, G. Lacidogna, A. Grazzini, A. Manuello, D. Masera, A. Carpinteri, Creep behaviour in reinforced masonry walls interpreted by Acoustic Emission, Key Eng. Mat. 417-418 (2010) 237-240.

DOI: 10.4028/www.scientific.net/kem.417-418.237

Google Scholar

[15] A. Anzani, L. Binda, A. Carpinteri, G. Lacidogna, A. Manuello, Evaluation of the repair on multiple leaf stone masonry by acoustic emission, Mat. and Str. 41 (2008) 1169-1189.

DOI: 10.1617/s11527-007-9316-z

Google Scholar

[16] A. Carpinteri, S. Invernizzi, G. Lacidogna, Historical brick-masonry subjected to double flat-jack test: Acoustic emissions and scale effects on cracking density, Constr. Build. Mat. 23 (2009) 2813-2820.

DOI: 10.1016/j.conbuildmat.2009.03.003

Google Scholar

[17] D. Masera, P. Bocca. A. Grazzini, Frequency Analysis of Acoustic Emission Signal to Monitor Damage Evolution in Masonry Structures, J. of Physics Conf. Series 305 (2011) 1-10.

DOI: 10.1088/1742-6596/305/1/012134

Google Scholar

[18] D. Masera, P. Bocca. A. Grazzini, Coda wave interferometry method applied in structural monitoring to assess damage evolution in masonry and concrete structures, J. of Physics Conf. Series 305 (2011) 1-9.

DOI: 10.1088/1742-6596/305/1/012108

Google Scholar

[19] A. Carpinteri, G. Lacidogna, G. Niccolini, N. Pugno, Morphological fractal dimension versus power-law exponent in the scaling of damaged media, Int. J. Damage Mech. 18 (2009) 259-282.

DOI: 10.1177/1056789508098700

Google Scholar

Scientific.Net is a registered brand of Trans Tech Publications Ltd
© 2024 by Trans Tech Publications Ltd. All Rights Reserved