A5074006630- Structural Health Monitoring Techniques
- Ultrasonics and Acoustic Wave Propagation
- Structural Engineering and Vibration Analysis
- Vibration and Dynamic Analysis
- Concrete Corrosion and Durability
- Mechanical and Optical Resonators
- Nonlocal and gradient elasticity in micro/nano structures
- Non-Destructive Testing Techniques
- Thermoelastic and Magnetoelastic Phenomena
- Seismic Performance and Analysis
- Probabilistic and Robust Engineering Design
- Optical measurement and interference techniques
- Thermography and Photoacoustic Techniques
- Structural Response to Dynamic Loads
- Advanced MEMS and NEMS Technologies
- Composite Structure Analysis and Optimization
- Fatigue and fracture mechanics
- Acoustic Wave Resonator Technologies
- Structural Load-Bearing Analysis
- Structural Integrity and Reliability Analysis
- Masonry and Concrete Structural Analysis
- Infrastructure Maintenance and Monitoring
- Civil and Structural Engineering Research
- Structural Behavior of Reinforced Concrete
University of Udine
2012-2023
University of Bologna
2003-2006
This paper deals with a dynamic method for damage detection in beams. Under the assumption that damaged beam is perturbation of undamaged one, it shown natural frequency and antiresonant shifts induced by structural contain information on certain generalized Fourier coefficients stiffness variation caused degradation. A reconstruction based this property proposed to solve inverse problem. Cases pseudoexperimental experimental data are discussed. The results good agreement theory, provided...
In this paper it is shown that natural frequency and antiresonant shifts induced by a structural damage in an axially vibrating rod contain information on certain generalized Fourier coefficients of the stiffness variation caused degradation. This property used to define reconstruction procedure based iterative updating undamaged configuration. The results numerical simulations rods with localized or diffuse damages are good agreement theory, provided average due degradation bigger than...
This paper is the second part of an experimental-analytical investigation on dynamic behavior damaged steel-concrete composite beams. In first research, we presented and discussed experimental results a comprehensive series tests performed beams with damage in connection. Experimental observations suggested formulation beam analytical model, where strain energy density connection also includes term associated to occurrence relative transversal displacements between reinforced concrete slab...
One of the main difficulties connected with use dynamic methods for damage detection in structures lies small sensitivity parameters to damage. This is an intrinsic feature structural diagnostics based on data and represents a source important indeterminacy, such as strong dependence results techniques experimental errors accuracy model that chosen interpret measurements. These facts are nowadays well known simple systems, single beams or frames, but still not completely clarified more...
In this paper we present a method for solving finite inverse eigenvalue problem arising in the determination of added distributed mass nanoresonator sensors by measurements first N natural frequencies free axial vibration under clamped end conditions. The is based on an iterative procedure that produces approximation unknown density as generalized Fourier partial sum order N, whose coefficients are calculated from eigenvalues. To avoid trivial non-uniqueness due to symmetry initial...
This paper deals with the identification of a small mass point in vibrating rod based on knowledge variations induced pair natural axial frequencies. The analysis is an explicit expression frequency sensitivity to and allows consideration non-uniform bars under general boundary conditions. inverse problem generally ill-posed, that is, even if system not symmetrical, points different locations can still produce identical changes Despite this ill-posedness, it found there are certain...