Wyniki wyszukiwania dla: guided waves (gw) fiber bragg grating (fbg) sensors damage detection matched fbg approach temperature study multiplexing

• Investigating the suitability of the matched fiber Bragg grating approach for guided wave based structural health monitoring

  Publikacja

  • R. Soman
  • F. Omidi Moaf
  • P. Fiborek
  • P. Kudela
  • M. Kurpińska

  - MEASUREMENT - Rok 2025

  Fiber Bragg grating (FBG) sensors are thought to be ideal sensors for structural health monitoring (SHM). Amplitude based techniques such as matched filters and the edge-filtering have been proposed to fulfill the high sampling rates necessary for guided waves (GW) sensing. The current research for the first time shows the inherent robustness the matched filter technique provides to the sensing system. The matched system is realized...

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• Structural Health Monitoring of Overhead Power Transmission Lines

  Publikacja

  • Ł. Skarbek
  • A. Żak

  - Rok 2013

  Structural Health Monitoring (SHM) is a novel and continuously developing branch of science and technology that draws attention of scientists all over the world. It creates opportunities to detect, localize and identify structural damage of various types such as: line breakage, permissible sag, bolt loosening, fatigue cracking or insulator contamination. On the other hand the methods used to estimate the remaining operational...

• Application of RMS for damage detection by guided elastic waves

  Publikacja

  • M. Radzieński
  • Ł. Doliński
  • M. Krawczuk
  • A. Żak
  • W. Ostachowicz

  - Rok 2011

  This paper presents certain results of an experimental study related with a damage detection in structural elements based on deviations in guided elastic wave propagation patterns.

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• An application of neural network for Structural Health Monitoring of an adaptive wing with an array of FBG sensors

  Publikacja

  • M. Krawczuk

  - Rok 2011

  W pracy przedstwiono możliwości zastoswania sieci czujników FBG i sztucznych sieci neuronowych do detekcji uszkodzeń w poszyciu adaptacyjnego skrzydła.

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• Modeling of active fiber Bragg grating sensors

  Publikacja

  • P. Wierzba

  - Rok 2005

  W artykule omówiono działanie przetwornika hydrofonu wykorzystującego profilowaną membranę sprzężoną z aktywną światłowodową siatką Bragga. W wyniku modelowania, wykonanego Metodą Elementów Skończonych, stwierdzono występowanie gradientów naprężeń wzdłuż siatki. Opracowano program do modelowania pasywnych i aktywnych światłowodowych siatek Bragga wykorzystujący metodę modów sprzężonych. Przedstawiono charakterystyki widmowe pasywnych...

• The Influence of Global Corrosion Degradation on Localized Damage Detection Using Guided Waves

  Publikacja

  • B. Zima
  • E. Roch
  • J. Moll

  - Rok 2024

  This paper presents the results of a numerical analysis of the influence of corrosion degradation of metal plates on the wave propagation phenomenon. There are several different corrosion types, but general and pitting corrosion are the most common. General corrosion is more or less uniformly distributed over the entire exposed surface of the metal while pitting corrosion takes the form of localized cracks. Because the general...

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• Damage detection in a bolted lap joint using guided waves

  Publikacja

  • R. Kędra
  • M. Rucka

  - Procedia Engineering - Rok 2017

  The paper presents the experimental investigation of guided waves application to the condition assessment of prestressed bolted connections and a concept of new quantitative indicator. The main goal of the research was the analysis of the influence of the contact conditions changes to the characteristics of a propagating disturbance. The experimental tests were carried out for a single bolted lap joint. The excitation and acquisition...

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• Optical-Fiber Microsphere-Based Temperature Sensors with ZnO ALD Coating—Comparative Study

  Publikacja

  • P. Listewnik
  • M. Bechelany
  • P. Wierzba
  • M. Szczerska

  - SENSORS - Rok 2021

  This study presents the microsphere-based fiber-optic sensor with the ZnO Atomic Layer Deposition coating thickness of 100 nm and 200 nm for temperature measurements. Metrological properties of the sensor were investigated over the temperature range from 100 °C to 300 °C, with a 10 °C step. The interferometric signal was used to monitor the integrity of the microsphere and its attachment to the connecting fiber. For the sensor...

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• SENSORS

  Czasopisma

  ISSN: 1424-8220

• Guided ultrasonic waves for detection of debonding in bars partially embedded in grout

  Publikacja

  • B. Zima
  • M. Rucka

  - CONSTRUCTION AND BUILDING MATERIALS - Rok 2018

  This paper deals with theoretical, numerical and experimental investigations of guided wave propagation in multilayered cylindrical bars with pre-existing debonding. The research focuses on a complex description of the nature of the wave phenomena occurring in a debonded specimen with a special emphasis on the influence of the location of damage on the wave conversion and diffraction. Experimental non-destructive and destructive...

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