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Antonella D'Alessandro     Institute, Department or Faculty Head 
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Antonella D'Alessandro published an article in April 2018.
Research Keywords & Expertise
0 A
0 Smart Materials
0 phase change materials
0 thermal properties
Top co-authors
Filippo Ubertini

63 shared publications

Department of Civil and Environmental Engineering, University of Perugia, Perugia, Umbria, Italy

Simon Laflamme

36 shared publications

Dept. of Civil, Construction, and Environmental Engineering, Iowa State Univ., Ames, IA 50011-1066

Enrique García-Macías

16 shared publications

Department of Continuum Mechanics and Theory of Structures, Universidad de Sevilla Escuela Tecnica Superior de Ingenieria de Sevilla, E.T.S. de Ingeniería C. de los Descubrimientos, Sevilla, Sevilla, Andalucía, 41092, SPAIN

Austin Downey

5 shared publications

3
Publications
54
Reads
26
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0
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Distribution of Articles published per year 

Total number of journals
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2
 
Publications
BOOK-CHAPTER 3 Reads 0 Citations Innovative Structural Concretes with Phase Change Materials for Sustainable Constructions: Mechanical and Thermal Charac... A. D’Alessandro, A. L. Pisello, C. Fabiani, F. Ubertini, L. ... Published: 17 April 2018
Proceedings of the 1st International Conference on Numerical Modelling in Engineering, doi: 10.1007/978-3-319-78936-1_13
DOI See at publisher website
CONFERENCE-ARTICLE 27 Reads 0 Citations Recent Advances on SHM of Reinforced Concrete and Masonry Structures Enabled by Self-Sensing Structural Materials Filippo Ubertini, Antonella D'Alessandro, Austin Downey, Enr... Published: 14 November 2017
Proceedings, doi: 10.3390/ecsa-4-04889
DOI See at publisher website ABS Show/hide abstract

Structural Health Monitoring is aimed at transforming civil structures into self-diagnosing systems able to automatically reveal the occurrence of a fault or a damage after a critical event such as an earthquake. While data science is presently experiencing a tremendous development, leading to the availability of powerful tools and algorithms that extract relevant information by effectively fusing data provided by different types of sensors, one of the main bottlenecks still limiting the development of SHM in the filed of civil engineering is the general lack of reliable sensing technologies that are effectively applicable to the large scale. A very promising solution to such a large scale challenge would be using the same construction materials for strain sensing and direct damage detection. In this view, the authors have recently proposed smart concretes and smart bricks that are piezoresistive concretes and clay bricks obtained by doping traditional construction materials with conductive nano- or micro inclusions. These novel multifunctional materials have the ability to provide measurable electrical output under application of a mechanical load and to provide information useful for damage detection, localization and quantification. The paper introduces both technologies, discusses their potentials and illustrates their application to paradigmatic structural elements arranged in the laboratory. The presented results contribute to showing the revolutionary impact that smart concretes and smart bricks may have in the near future on SHM of concrete and masonry structures.

Conference papers
CONFERENCE-ARTICLE 24 Reads 0 Citations <strong>Full-scale testing of a masonry building monitored with smart brick sensors</strong> Antonella D'Alessandro, Andrea Meoni, Enrique García-Macías,... Published: 14 November 2018
doi: 10.3390/ecsa-5-05764
DOI See at publisher website ABS Show/hide abstract

The seismic monitoring of masonry structures is especially challenging due to their brittle resistance behavior. A tailored sensing system could, in principle, help to detect and locate cracks and anticipate the risks of local and global collapses, allowing prompt interventions and ensuring users’ safety. Unfortunately, off-the-shelf sensors do not meet the criteria that are needed for this purpose, due to their durability issues, costs and extensive maintenance requirements. As a possible solution for earthquake-induced damage detection and localization in masonry structures, the authors have recently introduced the novel sensing technology of “smart bricks”, that are clay bricks with self-sensing capabilities, whose electromechanical properties have been already characterized in previous work. The bricks are fabricated by doping traditional clay with conductive stainless steel microfibers, enhancing the electrical sensitivity of the material to strain. If placed at key locations within the structure, this technology permits to detect and locate permanent changes in deformation under dead loading conditions, associated to a change in structural conditions following an earthquake. In this way, a quick post-earthquake assessment of the monitored structure can be achieved, at lower costs and with lower maintenance requirements in comparison to traditional sensors.

In this paper, the authors further investigate the electro-mechanical behavior of smart bricks, with a specific attention to the fabrication of the electrodes, and exemplify their application for damage detection and localization in a full-scale shaking table test on a masonry building specimen. Experimental results show that smart bricks’ outputs can effectively allow the detection of local permanent changes in deformation following a progressive damage, as also confirmed by a 3D finite element simulation carried out for validation purposes.

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