A5004592493- Structural Health Monitoring Techniques
- Infrastructure Maintenance and Monitoring
- Masonry and Concrete Structural Analysis
- Seismic Performance and Analysis
- Concrete Corrosion and Durability
- Structural Engineering and Vibration Analysis
- Ultrasonics and Acoustic Wave Propagation
- Conservation Techniques and Studies
- 3D Surveying and Cultural Heritage
- Geophysical Methods and Applications
- Structural Integrity and Reliability Analysis
- Smart Materials for Construction
- Structural Analysis of Composite Materials
- Metallurgy and Material Forming
- Advanced Sensor Technologies Research
- Thermography and Photoacoustic Techniques
- Magnetic Properties and Applications
- Plant Physiology and Cultivation Studies
- Control Systems in Engineering
- Vibration and Dynamic Analysis
- Building materials and conservation
- Geological Modeling and Analysis
- Tree Root and Stability Studies
- Optics and Image Analysis
- Electric Motor Design and Analysis
University of Florence
2018-2024
The recent developments of micro-electro-mechanical systems and wireless sensor networks allow today the use low-cost small-size sensors for continuous monitoring civil structures. Both these features are very important low impact grid in heritage structures, ensuring a sustainable dynamic system. Over last 20 years has received growing interest. Anyway, still numerous questions remain opened about sensitivity measurement devices, optimization number positioning sensors, energy efficiency...
Abstract This paper reports on a pilot project for long-term structural health monitoring of historical city gates. typology is what today remains the defensive structures that characterised medieval centres many European cities. Even though in last years scientific community has paid great attention to analysis and masonry towers, which are apparently similar gates, only few studies explicitly approach such heritage buildings. In most cases, surviving gates immersed daily vehicular-traffic...
Traffic-induced vibration is one of the main causes small (often only cosmetic) damages for Heritage buildings. The heavy public road-transport, often very close to these structures, may lead fatigue phenomena due induced continuous vibrations and consequently damages. Even if all International Standards agree define velocity—expressed in terms Peak Particle Velocity (PPV) or Component (PCPV)—as reference damage indicator, a standard procedure calculating those values starting from...
The implementation of proper strategies conservation heritage structures requires the collection heterogeneous sources information (historical evolution, past restoration works, experimental data, monitoring systems results, etc.). handling this data needs an effective informative modelling, able to collect different type by using 3D parametric model. Heritage Building Information Modelling (HBIM) can be considered a promising tool for monuments which have protected along centuries, thanks...
Experimental tests for dynamic identification of reinforced concrete (RC) bridges by means Operational Modal Analysis (OMA) are increasingly used in common engineering practice. Nevertheless, especially when measurements carried out under in-service conditions (i.e. traffic induced vibrations), some drawbacks should be carefully considered, the damping-ratio quantification. As a matter fact, estimation is affected several factors: i) length signals, ii) non-stationarity input process, and...
A comprehensive understanding of the dynamic behavior a tree can play key role in stability analysis. Indeed, through an engineering approach, living be modeled as mechanical system and monitored observing its properties. In current work, procedures identification used civil are applied to case study black locust (Robinia pseudoacacia L.). The was instrumented with 13 seismic, high-sensitivity accelerometers. Time histories response under ambient vibration were recorded. Three representative...
This paper discusses on the output only modal identification of historic structures. Modal has been carried out both in frequency and time domain using Frequency Domain Decomposition (FDD) Stochastic Subspace Iteration (SSI-data) respectively. To highlight sensitivity two methods, masonry towers under different environmental loads have considered. In one case dynamic excitation can be assumed as a very weak random white noise, other case, probably due several external noises, ambient noise...
The application of wireless sensor network technology for long-term monitoring a historic tunnel-like masonry structure in Italy is described. was performed within the activity research project aimed at providing general framework to check structural health heritage structures and detect, real time, any potential damage that may compromise their safety. selected case study (a structure) represented challenging experiment, both terms type itself technical solution employed installing system....
Abstract The application of vibration-based Structural Health Monitoring (SHM) for damage detection is characterised by three fundamental aspects: the features extracted as representative structural condition that can be directly linked to some form damage, metrics selected novelty or index, and statistical model classifier built identify underlying patterns indicative changes in structure’s state. Focusing on first step improve performance SHM strategies, should robust noise, sensitive...
The fixed steel offshore platform VEGA-A has been operating in the Sicily channel since 1988. platform, one of largest Mediterranean Sea, is equipped with a monitoring system that collects environmental (by means current meter, depth gauge, and for detecting wind speed direction) structural nine accelerometers) data. After description recording system, this paper provides statistical interpretation response over last 20 years. aimed at performing dynamic identification (i.e., evaluating main...
The VEGA-A platform is an 8-legs fixed steel offshore structure that has been operating since 1988 in the Sicily channel (Italy).From its installation onwards, equipped with environmental and structural (via above water accelerometers) monitoring system, it now time to consider improvement of this system.Today technological development makes possible additional underwater accelerometer measurements paper investigates on a optimal sensor position for new accelerometers improve -if any...
Structural Health Monitoring (SHM) methods based on Modal Tracking (MT) of dynamic parameters (main frequencies, mode shapes and modal damping), enable today the control operative conditions both structures infrastructures. Considering need continuous monitoring systems to process large datasets, in last decades many efforts have been done set-up Automated Operational Analysis (A-OMA) procedures. Among all automated procedures, this paper describes a new one used extract track properties...
During the last decades, significant efforts have been made to define appropriate Structural Health Monitoring (SHM) frameworks based on vibration signatures collected by accelerometers.Data-driven approaches are increasingly adopted for damage detection through identification of anomalies in distribution frequencies.This paper analyzes long-term monitoring data acquired from a system installed Matilde tower Livorno (Italy).The is historic masonry structure monitored since end 2018 using...