Strain sensing of beams in flexural vibrations using rotation rate sensors

Zembaty, Zbigniew; Bobra, Piotr; Bońkowski, Piotr; Kokot, Seweryn; Kuś, Juliusz

doi:10.1016/j.sna.2017.11.051

Cited by 14 publications

(15 citation statements)

References 30 publications

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“…Rotational sensors (gyroscopes) measuring rotational velocity are finding their application in more and more fields. To name only a few, one can mention seismology [ 1 , 2 , 3 ], structural health monitoring (SHM) [ 4 , 5 , 6 ], military [ 7 ], automotive [ 8 ], or in posture control [ 9 , 10 ]. In civil engineering, microelectromechanical system (MEMS) gyroscopes are getting particular attention because of their miniaturization and lower cost compared with the other systems [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Rotation Rate Sensors in Modal and Vibration Analyses of Reinforced Concrete Beams

Bońkowski

Bobra

Zembaty

et al. 2020

Sensors

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The recent rapid development of rotation rate sensor technology opens new opportunities for their application in more and more fields. In this paper, the potential of rotational sensors for the modal analysis of full-scale civil engineering structural elements is experimentally examined. For this purpose, vibrations of two 6-m long beams made of ultra-high performance concrete (UHPC) were measured using microelectromechanical system (MEMS) rotation rate sensors. The beams were excited to vibrations using an impact hammer and a dynamic vibration exciter. The results of the experiment show that by using rotation rate sensors, one can directly obtain derivatives of mode shapes and deflection shapes. These derivatives of mode shapes, often called “rotational modes”, bring more information regarding possible local stiffness variations than the traditional transversal and deflection mode shapes, so their extraction during structural health monitoring is particularly useful. Previously, the rotational modes could only be obtained indirectly (e.g., by central difference approximation). Here, with the application of rotation rate sensors, one can obtain rotational modes and deflection shapes with a higher precision. Furthermore, the average strain rate and dynamic strain were acquired using the rotation rate sensors. The laboratory experiments demonstrated that rotation rate sensors were matured enough to be used in the monitoring and modal analyses of full-scale civil engineering elements (e.g., reinforced concrete beams).

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Section: Introductionmentioning

confidence: 99%

Application of Rotation Rate Sensors in Modal and Vibration Analyses of Reinforced Concrete Beams

Bońkowski

Bobra

Zembaty

et al. 2020

Sensors

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“…Igel et al 2012 [3]). In recent papers by Kokot and Zembaty [4], as well as Zembaty et al [5,6] the application of rotation rate sensors in SHM was verified by numerical simulations and in small laboratory scale. The purpose of this paper is to test yet one more area of their potential application, namely their ability to monitor plastic hinge formation ( Fig.…”

Section: Introductionmentioning

confidence: 82%

Numerical analysis of monitoring of plastic hinge formation in frames under seismic excitations

Huras¹,

Bońkowski²,

Nalepka³

et al. 2018

J. meas. eng.

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Preliminary, numerical analyses of a novel Structural Health Monitoring (SHM) technique are reported. Based on recent developments of new rotation rate (rotation velocity) sensing devices, it is proposed to use the rotational sensors to measure the rotational difference of structural members to indicate plastic hinge development at the early stage. Respective difference between rotations of two adjacent corner nodes during seismic excitation is used to indicate and possibly quantify plastic hinge formation during seismic response of a moment resisting frame. The preliminary numerical analysis leads to a positive conclusion for the application of the rotation rate sensors in 'on-line' monitoring of moment resisting frames subjected to strong, damaging seismic ground motions.

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“…Has the dissipated power is usually related to the strain energy, the second spatial derivative of the deformation, ∂ 2 w(x)/∂ x 2 , is estimated from data obtained with SLDV as it is proportional to the strain 34 . The corresponding curves are displayed in Fig.…”

Section: B Analysis Of the Transient Evolution Of The Thermal Profilementioning

confidence: 99%

Thermal imaging of the structural damping induced by an acoustic black hole

Durand-Texte¹,

Pelat²,

Pénelet³

et al. 2020

Journal of Applied Physics

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An Acoustic Black Hole (ABH) is a passive and efficient way to control the flexural vibrations of beams or plates. In its classical form, an ABH consists in a local reduction of the thickness of a structure according to a power law profile, associated to a thin visco-elastic coating placed in the thinnest region. A focalisation and a wave trap effect occur, leading to a localised energy dissipation which induces a local temperature increase. The objective of this paper is twofold. Firstly, the goal is to develop an adequate experimental methodology enabling to map accurately the small temperature variations induced by the local dissipation mechanism. Secondly, from the thermal standpoint, the goal is to provide experimental evidence of a local temperature increase associated to a damping effect in the case of an ABH beam. This paper thus describes a new kind of experimental methodology able to provide original data, bringing some new insight in the ABH physical understanding and the analysis of structural damping.

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Strain sensing of beams in flexural vibrations using rotation rate sensors

Cited by 14 publications

References 30 publications

Application of Rotation Rate Sensors in Modal and Vibration Analyses of Reinforced Concrete Beams

Application of Rotation Rate Sensors in Modal and Vibration Analyses of Reinforced Concrete Beams

Numerical analysis of monitoring of plastic hinge formation in frames under seismic excitations

Thermal imaging of the structural damping induced by an acoustic black hole

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