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Ara es mostren els items 53358-53377 de 245812

    • Damage detection and localization at the jacket support of an offshore wind turbine using transformer models 

      Triviño, Héctor; Feijóo, Maria del Cisne; Lugmania, Hugo; Vidal Seguí, Yolanda; Tutivén Gálvez, Christian (John Wiley & sons, 2023-12-30)
      Article
      Accés obert
      Early detection of damage in the support structure (submerged part) of an offshore wind turbine is crucial as it can help to prevent emergency shutdowns and extend the lifespan of the turbine. To this end, a promising ...

    • Damage detection in a fiber reinforced polymers based tower of a floating offshore wind and tidal power platform using structural dynamic parameters 

      Sierra, Pablo Leonel; Martínez García, Javier; Chacón Flores, Rolando Antonio; Otero Gruer, Fermín Enrique; Turon Pujol, Francesc (2022)
      Article
      Accés obert
      The development of offshore renewable energy structures is growing at a fast pace, and their maintenance will become critical in further years. Because steel corrosion on offshore structures is one of their highest maintenance ...

    • Damage detection in a real truss bridge using Hilbert-Huang Transform of transient vibrations 

      Delgadillo Ayala, Rick Milton; Casas Rius, Joan Ramon (CRC Press, 2021)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Structural Health Monitoring (SHM) in bridges is an important field, which implements increasingly innovative damage detection strategies for both theoretical developments and laboratory-scale implementations. However, is ...

    • Damage detection in composite materials structures under variable loads conditions by using fiber Bragg gratings and principal component analysis, involving new unfolding and scaling methods 

      Sierra Pérez, Julian; Güemes Gordo, Alfredo; Mujica Delgado, Luis Eduardo; Ruiz Ordóñez, Magda (2014-06-03)
      Article
      Accés restringit per política de l'editorial
      An innovative methodology based on the use of fiber Bragg gratings as strain sensors and strain field pattern recognition is proposed for damage detection in composite materials structures. The strain field pattern recognition ...

    • Damage detection in piping systems using pattern recognition techniques 

      Buethe, Inka; Torres-Arredondo, Miguel Angel; Mujica Delgado, Luis Eduardo; Rodellar Benedé, José; Fritzen, Claus-Peter (2013)
      Text en actes de congrés
      Accés obert
      The interest in the propagation of ultrasound waves in pipe-like solid waveguides arises out of several areas of the structural health monitoring (SHM) community for the detection, localization and assessment of defects ...

    • Damage detection in structures using robust baseline models 

      Camacho-Navarro, Jhonatan; Ruiz Ordóñez, Magda; Villamizar Mejía, Rodolfo; Mujica Delgado, Luis Eduardo; Martínez, Fernando (2015)
      Text en actes de congrés
      Accés obert

    • Damage detection in the presence of outliers based on robust PCA 

      Gharibnezhad, Fahit; Mujica Delgado, Luis Eduardo; Rodellar Benedé, José (2011)
      Text en actes de congrés
      Accés obert
      Identification of outliers in samples from univariate and multivariate populations has received considerable attention over the past few decades. Presence of outliers has undeniable effects on the results of statistical ...

    • Damage detection index based on statistical inference and PCA 

      Mujica Delgado, Luis Eduardo; Ruiz Ordóñez, Magda; Pozo Montero, Francesc; Rodellar Benedé, José (Destech, 2011)
      Comunicació de congrés
      Accés obert
      This paper is focused on the development of new estimators propounding if someone statistical law could estimate or infer a system without damage knowing its reliability. This new measurement considers each experiment, and ...

    • Damage detection of bridges considering environmental variability using Hilbert-Huang Transform and Principal Component Analysis 

      Tenelema Muñoz, Fernando Josué; Delgadillo Ayala, Rick Milton; Casas Rius, Joan Ramon (2021)
      Text en actes de congrés
      Accés obert
      Structural Health Monitoring (SHM) systems have been heavily studied worldwide in the past decades. In this field, extensive research has been carried out on vibration-based damage detection (VBDD) techniques in civil ...

    • Damage detection using Andrew plots 

      Gharibnezhad, Fahit; Mujica Delgado, Luis Eduardo; Rodellar Benedé, José (2011)
      Comunicació de congrés
      Accés obert
      In current work, Andrew plot is used as a new index to detect any probable damage in the structure. At the first step, using piezoelectric actuators and sensors, appropriate lamb wave is propagated and received through the ...

    • Damage detection using principal component analysis applied to temporal variation of natural frequencies 

      Caselles Magallón, Josep Oriol; Clapés Boixader, Jaime; Elyamani, Ahmed; Lana Pons, Francisco Javier; Seguí Fernández, Carolina; Martín Balet, Alejo; Roca Fabregat, Pedro (2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      For preserving existing structures to the extent possible, vibration-based damage detection techniques are gaining more attention. In specific, tracking the changes in a structure’s natural frequencies employing the Principal ...

    • Damage detection using robust fuzzy principal component analysis 

      Gharibnezhad, Fahit; Mujica Delgado, Luis Eduardo; Rodellar Benedé, José; Fritzen, Claus-Peter (2013)
      Text en actes de congrés
      Accés obert
      In this work Robust Fuzzy Principal Component Analysis (RFPCA) is used and compared with comparing with classical Principal Component Analysis (PCA) to detect and classify damages. It has been proved that the RFPCA method ...

    • Damage detection using robust PCA 

      Gharibnezhad, Fahit; Mujica Delgado, Luis Eduardo; Rodellar Benedé, José (2011-02-01)
      Capítol de llibre
      Accés obert

    • Damage diagnosis for offshore fixed wind turbines 

      Agis Cherta, David; Vidal Seguí, Yolanda; Pozo Montero, Francesc (2019-07-01)
      Article
      Accés obert
      This paper proposes a damage diagnosis strategy to detect and classify different type of damages in a laboratory offshore-fixed wind turbine model. The proposed method combines an accelerometer sensor network attached to ...

    • Damage diagnosis for offshore fixed wind turbines 

      Agis Cherta, David; Vidal Seguí, Yolanda; Pozo Montero, Francesc (2019)
      Text en actes de congrés
      Accés obert
      This paper proposes a damage diagnosis strategy to detect and classify different type of damages in a laboratory offshore-fixed wind turbine model. The proposed method combines an accelerometer sensor network attached to ...

    • Damage diagnosis for offshore wind turbine foundations based on the fractal dimension 

      Hoxha, Ervin; Vidal Seguí, Yolanda; Pozo Montero, Francesc (2020-10-05)
      Article
      Accés obert
      Cost-competitiveness of offshore wind depends heavily in its capacity to switch preventive maintenance to condition-based maintenance. That is, to monitor the actual condition of the wind turbine (WT) to decide when and ...

    • Damage diagnosis in concrete dams with presented expansive damage based on medical propaedeutics 

      Pardo Bosch, Francesc; Aguado de Cea, Antonio (2017-10)
      Article
      Accés obert
      The maintenance of dams is crucial because of their social, environmental, and economic relevance. However, more than 40% of the world’s dams are more than 40 years old. Furthermore, because of their ageing, damage such ...

    • Damage evaluation of rc members under high temperature by using RBSM-TRUSS network model 

      Unno, T.; Nakamura, H.; Yamamoto, Y.; Kunieda, M.; Ueda, N. (CIMNE, 2013)
      Text en actes de congrés
      Accés obert
      The explosive behavior of RC members due to thermal stress and vapor pressure under high temperature was investigated numerically using a developed method. RBSMTRUSS Network model was adopted as an analytical method, in ...

    • Damage evolution in open-hole laminated composite plates subjected to in-plane loads 

      Moure, M. M.; Otero Gruer, Fermín Enrique; Garcia Castillo, S. K.; Sanchez Saez, S.; Barbero, E; Barbero, Ever (2015-12-01)
      Article
      Accés obert
      Damage evolution of notched composite laminates is analysed in this work using a discrete damage model, which estimates matrix damage evolution and fibre failure. The fibre damage is regularised with a Weibull distribution, ...

    • Damage functions and thermal requirements of Meloidogyne javanica and Meloidogyne incognita on watermelon 

      López Gómez, Manuel; Giné Blasco, Ariadna; Vela Delgado, María Dolores; Ornat Longarón, Cèsar; Sorribas Royo, Francisco Javier; Talavera Rubia, Miguel Francisco; Verdejo Lucas, Soledad (2014-11-01)
      Article
      Accés restringit per política de l'editorial
      The relationship between the initial (P-i) and final (P-f) population densities of Meloidogyne javanica and yield of watermelon, Citrullus lanatus, cv. Sugar Baby were determined in pot and field experiments. In the pots, ...