Computational Techniques for Structural Health Monitoring

Gopalakrishnan, S.; Ruzzene, Massimo; Hanagud, S.

doi:10.1007/978-0-85729-284-1

Cited by 107 publications

(109 citation statements)

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“…Mode shapes are found to be quite sensitive to damage and are able to directly provide damage location information [8]. Moreover, the mode shapes are less sensitive to environmental effects, such as temperature, than natural frequencies [9,10].…”

Section: Modal Displacementsmentioning

confidence: 99%

Vibration Based Methods For Damage Detection In Structures

et al. 2016

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Abstract. Vibration based damage detection methods are among the most popular and promising approaches for health monitoring of structures. In this work a critical review of different methods for damage detection methods of structures is presented. The theoretical bases of the most popular methods based on the changes in the modal properties of the structures are deduced. The review includes the modal displacements, the mode shape slopes, the modal curvatures and the strain energy methods. The efficiency of all these methods is compared by using a finite element analysis of intact and damaged beams. The methods are tested experimentally by using a scanning laser vibrometer to measure the modal properties of specially prepared composite beams with defects. All this methods are compared with the damage detection method based on the analysis of the Poincaré maps of the motion of the structures). Conclusions concerning the advantages and the applicability of the considered methods are deduced.

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Section: Modal Displacementsmentioning

confidence: 99%

Vibration Based Methods For Damage Detection In Structures

et al. 2016

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“…Due to the direct and inverse piezoelectric effect in piezoelectric materials, they are the most popular in the SHM and can be also used for guided-wave tomography in a catchpitch configuration or in a pulse-echo mode (see section 3.2). In the second application, the same piezoelectric element acts both as a transmitter and as a receiver [18]. Piezoelectric elements are mainly made of polymer or ceramic materials.…”

Section: Common Smh Sensors and Actuatorsmentioning

confidence: 99%

“…Other advantages and applications of PZT sensors and actuators are high piezoelectric coupling factors, moderate permittivity, high Q-factors and very good stability under high mechanical loads and operating fields [30]. More detailed information about PZT and PFDV and their applications in damage detection can be found in papers [6,8,12,17,18,40].…”

Section: Common Smh Sensors and Actuatorsmentioning

confidence: 99%

“…There is available large number of publications, where the fundamental assumptions of these techniques are discussed. Here can be quoted works [17] and [18]. Generally, the SHM techniques split into two main categories, namely active and passive ones.…”

Section: Introductionmentioning

confidence: 99%

“…In order to summarize, every real SHM system consists of the following components [18]: the analyzed structure where the SHM system is installed, contact or non-contact sensors, data acquisition system, signal processing, theoretical damage modeling and damage detection algorithm, data transfer and storage mechanisms and data handling and management.…”

Section: Introductionmentioning

confidence: 99%

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Structural Health Monitoring (SHM) Methods in Machine Design and Operation

Barski¹,

Kędziora²,

Muc³

et al. 2014

Archive of Mechanical Engineering

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The present paper is devoted to the discussion and review of the non-destructive testing methods mainly based on vibration and wave propagation. In the first part, the experimental methods of actuating and analyzing the signal (vibration) are discussed.The piezoelectric elements, fiber optic sensors and Laser Scanning Doppler Vibrometer (SLDV) method are described. Effective detecting of the flaws needs very accurate theoretical models. Thus, the numerical methods, e.g. finite element, spectral element method and numerical models of the flaws in isotropic and composite materials are presented. Moreover, the detection of the damage in structures, which are subjected to cyclic or static loads, is based on the analyzing of the change in natural frequency of the whole structure, the change of internal impedance of the material and the change in guided waves propagating through the investigated structure. All these cases are characterized in detail. At the end of this paper, several applications of the structural health monitoring systems in machine design and operation are presented.

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Sensing and Detection

2017

Harnessing Bistable Structural Dynamics

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Computational Techniques for Structural Health Monitoring

Cited by 107 publications

References 0 publications

Vibration Based Methods For Damage Detection In Structures

Vibration Based Methods For Damage Detection In Structures

Structural Health Monitoring (SHM) Methods in Machine Design and Operation

Sensing and Detection

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