Sökning: "Structural health monitoring SHM"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Structural health monitoring SHM.

  1. 1. Application of Lamb waves using piezoelectric technique for structure health monitoring

    M1-uppsats, KTH/Hälsoinformatik och logistik

    Författare :Simon Mauritz; [2023]
    Nyckelord :Structural health monitoring SHM ; damage detection; Lamb waves; piezoelectric PZT ; printed circuit board PCB ; circuit simulation; Strukturell hälsoövervakning SHM ; skadedetektering; Lambvågor; piezoelektrisk PZT ; printed circuit board PCB ; kretssimulering;

    Sammanfattning : Structural health monitoring (SHM) is damage detection strategy for aerospace, civiland mechanical infrastructure. This project tries to show that Lamb waves, that are being generated and sensed with piezoelectric transducers, can be used for damage detection in a SHM system. LÄS MER

  3. 2. Seismic retrofitting assessment of historical churches : The reconstruction of The Basilica of Santa Maria di Collemaggio after the 2009 L’Aquila earthquake

    Uppsats för yrkesexamina på grundnivå, Mälardalens högskola/Akademin för ekonomi, samhälle och teknik

    Författare :Angelika Hedenström; [2020]
    Nyckelord :L’Aquila; earthquake; reconstruction; church; Basilica; Santa Maria di Collemaggio; Collemaggio; historical; heritage; preservation; seismic; retrofit; SHM;

    Sammanfattning : This study summarizes previous research to evaluate and verify the results of the extensive restoration of The Basilica of Santa Maria di Collemaggio after the 2009 L’Aquila earthquake. In addition, it aims at identifying the vulnerability factors and challenges in preserving these buildings. LÄS MER

  4. 3. Implementering av Structural Health Monitoring : SHM - system för detektering och övervakning av vanligt förekommande skador på betongbroar

    Kandidat-uppsats, KTH/Byggteknik och design

    Författare :Jonathan Le Guillarme; Jakob Lindstam; [2019]
    Nyckelord :Structural Health Monitoring; Bridge Maintenance; Monitoring With Sensor Technology; Fibre Optical Sensors; Acoustic Emission; Bridge Constructions; Concrete Damages; Damage Mechanisms; Structural Health Monitoring; Tillståndsbedömning; Övervakning med sensorteknik; Fiberoptiska sensorer; Akustisk emission; Brokonstruktioner; Betongskador; Skademekanismer;

    Sammanfattning : Sverige har som många länder runt om i världen en åldrande infrastruktur och behovet av underhåll stiger. I en artikel i Svenska Dagbladet från 21/9–2018 redovisar analys- och teknikkonsultföretaget WSP en grov uppskattning att 300 miljarder kronor behöver investeras för att rusta upp existerande infrastruktur. LÄS MER

  5. 4. Semi-Analytical Finite Element method for guided waves in civil engineering plate-like structures

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Teknisk geologi; Lunds universitet/Väg- och vattenbyggnad (CI)

    Författare :Christian Nielsen; [2015]
    Nyckelord :seismics; structural health monitoring; lamb waves; SAFE; semi analytical finite element; wave guide finite element; non destructive testing; civil engineering; ultrasound; ultrasonography; comsol; wave guide; plate; Technology and Engineering;

    Sammanfattning : Guided waves have a signicant potential for Structural Health Monitoring (SHM) and Non-Destructive Testing (NDT) due to their relatively long distance of propagation and sensitivity to discontinuities along the propagation path, anywhere through the material thickness. The inability to model wave guides of arbitrary cross-section using current matrix methods, has led to the development of a technique called Semi-Analytical Finite Element (SAFE). LÄS MER

  7. 5. Damage detection on railway bridges using Artificial Neural Network and train induced vibrations

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Jiangpeng Shu; Ziye Zhang; [2012]
    Nyckelord :Damage detection; Railway Bridge; Dynamic Response; high-speed trains; Statistical Property; Artificial Neural Network ANN ;

    Sammanfattning : A damage detection approach based on Artificial Neural Network (ANN), using the statistics of structural dynamic responses as the damage index, is proposed in this study for Structural Health Monitoring (SHM). Based on the sensitivity analysis, the feasibility of using the changes of variances and covariance of dynamic responses of railway bridges under moving trains as the indices for damage detection is evaluated. LÄS MER