FULL-SCALE TESTING OF A MASONRY BUILDING MONITORED WITH SMART BRICK - - PowerPoint PPT Presentation

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FULL-SCALE TESTING OF A MASONRY BUILDING MONITORED WITH SMART BRICK - - PowerPoint PPT Presentation

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FULL-SCALE TESTING OF A MASONRY BUILDING MONITORED WITH SMART BRICK SENSORS A. DAlessandro 1 , A. Meoni 1 , E. Garca-Macas 1 , M. Gioffr 1 , N. Cavalagli 1 , F. Ubertini 1 1 University of Perugia (Italy) 2 Universidad de Sevilla (Spain)

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FULL-SCALE TESTING OF A MASONRY BUILDING MONITORED WITH SMART BRICK SENSORS

November 15th , 2018

  • A. D’Alessandro1, A. Meoni1, E. García-Macías1,
  • M. Gioffrè1, N. Cavalagli1, F. Ubertini1

antonella.dalessandro@unipg.it

1 University of Perugia (Italy) 2 Universidad de Sevilla (Spain)

DIPARTIMENTO DI ECCELLENZA

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Antonella D’Alessandro, PhD

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

AIM: Structural Health Monitoring of new and existing Masonry Structures

  • Motivation
  • Smart bricks:
  • Concept
  • Fabrication
  • Sensing characterization
  • Smart masonry:
  • Walls
  • Buildings
  • Conclusions

OVERVIEW

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Antonella D’Alessandro, PhD

Data analysis Instrumentation Structure to be monitored Acquisition system Data Selection and positioning of the sensors

MOTIVATION: Structural Health Monitoring

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

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Antonella D’Alessandro, PhD

MOTIVATION: Self-sensing Structures

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

((( (((

Smart Sensor Crack Acquisition system

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SMART BRICK: Concept

Antonella D’Alessandro, PhD

NANOFILLERS

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

Fu and Chung, 1995 Electrical conductivity

Percolation P P

R0 R0-ΔR(P)

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SMART BRICK: Concept

Antonella D’Alessandro, PhD

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

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SMART BRICK: Fabrication

Antonella D’Alessandro, PhD

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors (b) mechanical mixing (e) embedding of electrodes clay (c) nanomodified clay (h) nanomodified bricks (f) drying in oven (g) burning at 900°C (d) moulding of bricks (a) preparation

  • f clay and

fillers

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SMART BRICKS: Fillers

Nanofibers Nanotubes Carbon Black Graphene nanoplatelets

Antonella D’Alessandro, PhD

November 15th, 2018

Carbon Based

Titania Stainless steel microfibers

Thermogravimetric analysis

5,98% 1,46% 9,01% 99,86% 100,00% 0% 20% 40% 60% 80% 100% 20 300 500 700 900 Mass Resulting Burning temperature (°C) CNTs CB CNFs TiO2 Steel

Stainless steel microfibers Carbon Nanofibers

  • A. D'Alessandro, F. Ubertini, A.L. Materazzi, S. Laflamme, A. Downey,

Novel nanocomposite clay brick for strain sensing in structural masonry, EEEIC17, 17th IEEE International Conference on Environment and Electrical Engineering, Milan june, 7-10, 2017

Full-scale testing of a masonry building monitored with smart brick sensors

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Antonella D’Alessandro, PhD

SENSING CHARACTERIZATION

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

 Electrical Performance  Electromechanical Behaviour

  • Hold loads
  • Cyclical loads

 Smart Masonry

  • Walls
  • Building
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Antonella D’Alessandro, PhD

Electrical Performance

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

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Antonella D’Alessandro, PhD

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Full-scale testing of a masonry building monitored with smart brick sensors

Electrical Performance

  • A. D’Alessandro, A. Meoni, and F. Ubertini, “Stainless Steel Microfibers for Strain-Sensing Smart Clay Bricks,”

Journal of Sensors, vol. 2018, Article ID 7431823, 8 pages, 2018. https://doi.org/10.1155/2018/7431823.

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Full-scale testing of a masonry building monitored with smart brick sensors

Electromechanical Behavior: hold loads

R GF R      R S GF R      

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Antonella D’Alessandro, PhD

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Full-scale testing of a masonry building monitored with smart brick sensors

Electromechanical Behavior: hold loads

NORMAL BRICK STEEL FIBER BRICK GAUGE FACTORS COPPER PLATES GRAPHITE-BASED RESIN

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Antonella D’Alessandro, PhD

November 15th, 2018

Electromechanical Behavior: cyclical loads

  • A. Downey, A. D’Alessandro, S. Laflamme, F. Ubertini Smart bricks

for strain sensing and crack detection in masonry structures, Smart Materials and Structures 27(1) (2018) 015009 (15pp)

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Antonella D’Alessandro, PhD

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

SMART MASONRY: Small Walls

  • A. Meoni, A. D'Alessandro, F. Ubertini, A. Downey, S. Laflamme Strain monitoring in masonry structures using smart

bricks, (2018) Proceedings of SPIE 2018 - The International Society for Optical Engineering doi: 10.1117/12.2297526

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C L R 1 3 2

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

SMART MASONRY: Walls

  • A. Downey, A. D’Alessandro, S. Laflamme, F. Ubertini Smart bricks for strain sensing and crack detection in masonry structures,

Smart Materials and Structures 27(1) (2018) 015009 (15pp)

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Antonella D’Alessandro, PhD

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

SMART MASONRY: Walls

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Antonella D’Alessandro, PhD

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Full-scale testing of a masonry building monitored with smart brick sensors

SMART MASONRY: Walls

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Antonella D’Alessandro, PhD

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

SMART MASONRY: Buildings

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Antonella D’Alessandro, PhD

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Full-scale testing of a masonry building monitored with smart brick sensors

SMART MASONRY: Buildings

Façade 4

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CONCLUSIONS

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Novel smart clay bricks doped nano- and micro-fillers with self- sensing abilities and their applications have been investigated. Issues are related to the optimization of the preparation procedure (stability of the fillers at high temperature, choice of electrodes and inclusions, proportioning of fillers). Electrical and electromechanical tests of the smart bricks demonstrate enhanced gauge factors. Tests on walls and on full-scale specimens show that they can identify permanent changes due to progressive damages. Smart bricks are promising for a quick assessments of a structural integrity of masonry constructions after important events as earthquakes.

Antonella D’Alessandro, PhD

November 15th, 2018

Full-scale testing of a masonry building monitored with smart brick sensors

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ACKNOWLEDGMENTS

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“SMART-BRICK: Novel strain-sensing nanocomposite clay brick enabling self-monitoring masonry structures” (protocol no. 2015MS5L27).

Antonella D’Alessandro, PhD

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 765057

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Full-scale testing of a masonry building monitored with smart brick sensors

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Thank you for your attention!

antonella.dalessandro@unipg.it