Vibrations of steel–concrete composite beams with partially degraded connection and applications to damage detection

Damage identification of slab–girder structures: experimental studies

“…However, the shear connectors are physically inaccessible for visual inspection and the traditional non-destructive techniques, because they are usually cast in the concrete slab. Vibration-based condition assessment methods have been found promising for detecting shear connector conditions (Dilena and Morassi 2009). In the last few decades, numerous vibration-based methods have been developed to identify and assess structures with various damages.…”

Damage analysis of a steel–concrete composite frame by finite element model updating

“…Several studies and applications of DD methods based on EMA and FEMU for detection, assessment and quantification of structural damage in many engineering fields demonstrated the suitability and usefulness of such techniques; for civil constructions, such methods have been applied to bridges [19][20][21], buildings [22][23][24][25] and substructures [26,27].…”

Effects of shear stiffness, rotatory and axial inertia, and interface stiffness on free vibrations of a two-layer beam

“…Later, these different kinematics models have been used in the dynamical framework, too, the former for example in [2,[6][7][8] and the latter for example in [8][9][10][11]. Actually, the free dynamics behaviour of two-layer beams has been largely studied in the literature [12][13][14][15][16][17][18][19][20], where numerical [21,22], analytical/theoretical [8,23] as well as experimental [8,11,24,25] studies can be found.…”

“…Actually, the free dynamics behaviour of two-layer beams has been largely studied in the literature [12][13][14][15][16][17][18][19][20], where numerical [21,22], analytical/theoretical [8,23] as well as experimental [8,11,24,25] studies can be found. Also some specific issues have been investigated, such as, the effect of interface damage [8,26,27], the viscoelastic behaviour of the core [28][29][30], the effect of the temperature [31,32], the lateraltorsional vibration coupling [33], curved beams [34], and boundary conditions effects [35].…”

“…In this paper, we consider the model used in [9] and in Section 5 of [8], i.e., a shear-deformable two-layer beam with elastic interface and with all inertia terms: axial, rotational (which are not commonly considered) and transverse. We also consider both tangential (slip) and normal (detachment, or uplift) interface stiffnesses, and we mainly focus on transversal (or flexural) vibrations, because they are the most important in applications.…”