Distributed System for Monitoring of the Large Scale Infrastructure Structures Based on Analysis of Changes of its Static and Dynamic Properties

Gałęzia, Adam; Gontarz, Szymon; Jasiński, M.; Mączak, Jędrzej; Radkowski, S.; Seńko, Jarosław

doi:10.4028/www.scientific.net/kem.518.106

Cited by 13 publications

(10 citation statements)

References 5 publications

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“…5. Object of tests the laboratories of the mentioned above Faculty (Gałęzia et al 2012, Szulim et al 2012. During the experiment a force was applied to the truss as shown in the figure.…”

Section: Monitoring Of Load Changesmentioning

confidence: 99%

Damage Localization and Monitoring of Load Changes in Truss Structures

Mendrok

2014

mech

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In recent years one can observe an increasing interest of the researchers, both from academia and industry, in the development of systems for the monitoring of health structures.. The main fields of application for these systems are rotating machinery, aircrafts and other means of group transport and civil engineering structures. Many of the latter, contain truss elements in its structure. That is why detection and possible localization of the fault in such a structures is crucial for the safety of its operation. In this paper the application of modal filtration to damage detection and localization in the truss structures is presented. The results of numerical simulation an laboratory experiment are shown.Keywords: damage detection, damage localization, truss structures, modal filter LOKALIZACJA USZKODZEŃ I MONITOROWANIE ZMIAN OBCIĄŻENIA W STRUKTURACH KRATOWNICOWYCH Ostatnio można zaobserwować wzrastające zainteresowanie badaczy zarówno ześrodowisk akademickich, jak i z przemysłu, rozwojem układów monitorowania stanu obiektów. Główne pola zastosowania tych układów to maszyny wirnikowe, lotnictwo i inneśrodki transportu zbiorowego oraz konstrukcje inżynierii lądowej. W artykule pokazano zastosowanie filtracji modalnej do wykrywania i lokalizowania uszkodzeń w konstrukcjach kratownicowych. Przedstawiono wyniki badań symulacyjnych oraz pomiarów laboratoryjnych.Słowa kluczowe: wykrywanie uszkodzeń, lokalizacja uszkodzeń, konstrukcje kratownicowe, filtr modalny

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“…5. Object of tests the laboratories of the mentioned above Faculty (Gałęzia et al 2012, Szulim et al 2012. During the experiment a force was applied to the truss as shown in the figure.…”

Section: Monitoring Of Load Changesmentioning

confidence: 99%

Damage Localization and Monitoring of Load Changes in Truss Structures

Mendrok

2014

mech

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“…Cutting operations for example: blanking, guillotining, edge trimming, shear slitting, or punching induce stresses in electrical steels and consequently magnetic properties are partially deteriorated. According to many authors, the reason for the deterioration of the magnetic properties is to change the distribution of flux density and hysteresis loss (Godec, 1977;Gałęzia et al, 2012;Gontarz and Radkowski, 2012).…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Shear Slitting Process of Grain Oriented Silicon Steel using SPH Method

Bohdal

Tandecka

Kaldunski

2017

Acta Mechanica Et Automatica

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Mechanical cutting allows separating of sheet material at low cost and therefore remains the most popular way to produce laminations for electrical machines and transformers. However, recent investigations revealed the deteriorating effect of cutting on the magnetic properties of the material close to the cut edge. The deformations generate elastic stresses in zones adjacent to the area of plastically deformed and strongly affect the magnetic properties. The knowledge about residual stresses is necessary in designing the process. This paper presents the new apprach of modeling residual stresses induced in shear slitting of grain oriented electrical steel using mesh-free method. The applications of SPH (Smoothed Particle Hydrodynamics) methodology to the simulation and analysis of 3D shear slitting process is presented. In experimental studies, an advanced vision-based technology based on digital image correlation (DIC) for monitoring the cutting process is used.

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“…The idea of using passive magnetic method in diagnostic and prognostic procedures of the assessment of the material's (construction) stress seems to be an interesting proposal for SHM systems [3]. Materials that have a high risk of damage due to material fatigue, exceeding maximum stress or plastic deformations have magnetic properties, which allowed developing a group of magnetic methods in technical diagnostics.…”

Section: Introductionmentioning

confidence: 99%

“…power units, fans, etc. allowing for on-line monitoring and performing exploitation decisions according to the current state of the monitored objects [1][2][3]. The main advantage of this approach is the possibility of simultaneous monitoring technical state of many objects distributed on a large area from one place thus limiting costs and manpower.…”

Section: Introductionmentioning

confidence: 99%

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Online Monitoring of Steel Constructions Using Passive Methods

Gontarz

Mączak

Szulim

2014

Lecture Notes in Mechanical Engineering

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In the chapter the possibilities of development of distributed diagnostic system capable of online structural health monitoring of civil engineering structures are discussed. Instead of commonly used methods of determining the technical state of the construction that are usually focused on searching for cracks, material heterogeneities and assessing concrete or steel degradation, the methods proposed for the system are based on the comparative strain gauge, acceleration and passive magnetic measurements. All this measurement methods are used for stress assessment in critical fragments that are vital for stability and durability of the structure. Evolution of defects in the construction causes measurable changes of stress distribution in critical joints of the construction. Additionally, materials that could cause threat of the catastrophic accident caused by fatigue wear, exceeding stress limits or emerging of plastic deformations have magnetic properties that could affect the local magnetic field. Stress limits could be then constantly supervised taking into account the range of permanent and elastic deformation, which would allow for early detection of threats. SHM data analysis is taking into consideration a series of magneto-mechanical and other phenomena occurring during the construction/machine's operation and also actual magnetization conditions of the object examined in exterior magnetic field (Earth's or derived from adjacent elements).

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Distributed System for Monitoring of the Large Scale Infrastructure Structures Based on Analysis of Changes of its Static and Dynamic Properties

Cited by 13 publications

References 5 publications

Damage Localization and Monitoring of Load Changes in Truss Structures

Damage Localization and Monitoring of Load Changes in Truss Structures

Numerical Simulation of Shear Slitting Process of Grain Oriented Silicon Steel using SPH Method

Online Monitoring of Steel Constructions Using Passive Methods

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