Now showing items 1-20 of 74

    • A damage classification approach for structural health monitoring using machine learning 

      Tibaduiza Burgos, Diego Alexander; Torres-Arredondo, Miguel Ángel; Vitola Oyaga, Jaime; Anaya Vejar, Maribel; Pozo Montero, Francesc (2018-12-02)
      Article
      Open Access
      Inspection strategies with guided wave-based approaches give to structural health monitoring (SHM) applications several advantages, among them, the possibility of the use of real data from the structure which enables ...
    • A review of distributed optical fiber sensors for civil engineering applications 

      Barrias, Antonio Jose de Sousa; Casas Rius, Joan Ramon; Villalba Herrero, Sergi (2016-05)
      Article
      Open Access
      The application of structural health monitoring (SHM) systems to civil engineering structures has been a developing studied and practiced topic, that has allowed for a better understanding of structures’ conditions and ...
    • A state of the art review of modal-based damage detection in bridges: development, challenges, and solutions 

      Moughty, John James; Casas Rius, Joan Ramon (Multidisciplinary Digital Publishing Institute, 2017-05)
      Article
      Open Access
      Traditionally, damage identification techniques in bridges have focused on monitoring changes to modal-based Damage Sensitive Features (DSFs) due to their direct relationship with structural stiffness and their spatial ...
    • Actualización del riesgo sísmico de puentes existentes mediante monitorización estructural 

      Soriano Chacón, Miriam; Casas Rius, Joan Ramon (Ministerio de Obras Públicas de Chile, 2014)
      Conference report
      Restricted access - publisher's policy
      The present paper presents a theoretical study of the advanced assessment implementation methodology through the application of a Structural Health Monitoring system (SHM) to update the level of seismic risk of existing ...
    • Advancements of vibration based damage detection techniques for small to medium span bridges 

      Moughty, John James; Casas Rius, Joan Ramon (2016)
      Conference report
      Restricted access - publisher's policy
      Overtime, the structural condition of bridges tends to decline due to a number of degradation processes, such as; creep, corrosion and cyclic loading, among others. Considerable research has been conducted over the years ...
    • Analysis of the torsional mode T(0,1) propagating in a bending pipe 

      Quiroga, Jabid; Mujica Delgado, Luis Eduardo; Villamizar Mejía, Rodolfo; Ruiz Ordóñez, Magda (2018)
      Conference lecture
      Open Access
      In operation, some structural members are subjects to bending conditions. Velocity variations of guided waves propagating in a stressed specimen are expected due to the acoustoelasticity effect. In this work, a numerical ...
    • Application of distributed optical fiber sensors for the health monitoring of two real structures in Barcelona 

      Barrias, Antonio Jose de Sousa; Rodríguez, Gerardo; Casas Rius, Joan Ramon; Villalba Herrero, Sergi (2018-07)
      Article
      Open Access
      The versatility and ease of installation of Distributed Optical Fibre Sensors (DOFS) compared with traditional monitoring systems are important characteristics to consider when facing the Structural Health Monitoring (SHM) ...
    • Application of optical fiber distributed sensing to health monitoring of concrete structures 

      Villalba Herrero, Sergi; Casas Rius, Joan Ramon (2013-08)
      Article
      Restricted access - publisher's policy
      The use of Optical Backscatter Reflectometer (OBR) sensors is a promising measurement technology for Structural Health Monitoring (SHM) as it offers the possibility of continuous monitoring of strain and temperature along ...
    • Automated data analysis for static structural health monitoring of masonry heritage structures 

      Makoond, Nirvan Chandra; Pelà, Luca; Molins i Borrell, Climent; Roca Fabregat, Pedro; Alarcón Fernández, Daniel (Wiley, 2020-10)
      Article
      Restricted access - publisher's policy
      Masonry heritage structures are often affected by slow irreversible deterioration mechanisms that can jeopardise structural stability in the foreseeable future. Static structural health monitoring (SHM), aimed at the ...
    • Cracking assessment in concrete structures by distributed optical fiber 

      Rodríguez, Gerardo; Casas Rius, Joan Ramon; Villalba Herrero, Sergi (2015-03)
      Article
      Open Access
      In this paper, a method to obtain crack initiation, location and width in concrete structures subjected to bending and instrumented with an optical backscattered reflectometer (OBR) system is proposed. Continuous strain ...
    • Damage classification based on machine learning applications for an unmanned aerial vehicle 

      Anaya Vejar, Maribel; Ceron, Hernan; Vitola Oyaga, Jaime; Tibaduiza Burgos, Diego Alexander; Pozo Montero, Francesc (2017)
      Conference lecture
      Restricted access - publisher's policy
      Unmanned aerial vehicles (UAVs) are well-known by its advantages in several applications such as surveillance and monitoring for instance in agricultural applications or fire control among others. These missions can be ...
    • Damage detection and diagnosis for offshore wind foundations 

      Puruncajas Maza, Bryan; Vidal Seguí, Yolanda; Tutivén Gálvez, Christian (2020)
      Conference report
      Restricted access - publisher's policy
      Structural health monitoring for wind turbines (WT) in remote locations, as offshore, is crucial (Presencia and Shafiee, 2018). Offshore wind farms are increasingly realized in water depths beyond 30 meters, where lattice ...
    • Damage detection index based on statistical inference and PCA 

      Mujica Delgado, Luis Eduardo; Ruiz Ordóñez, Magda; Pozo Montero, Francesc; Rodellar Benedé, José (Destech, 2011)
      Conference lecture
      Open Access
      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 using principal component analysis applied to temporal variation of natural frequencies 

      Caselles Magallón, Josep Oriol; Clapes Boixader, Jaime; Elyamani, Ahmed; Lana Pons, Francisco Javier; Seguí Fernández, Carolina; Martín Balet, Alejo; Roca Fabregat, Pedro (2018)
      Conference report
      Restricted access - publisher's policy
      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)
      Conference report
      Open Access
      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 diagnosis for offshore fixed wind turbines 

      Agis Cherta, David; Vidal Seguí, Yolanda; Pozo Montero, Francesc (2019-07-01)
      Article
      Open Access
      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
      Open Access
      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 identification in structural health monitoring: a brief review from its implementation to the Use of data-driven applications 

      Tibaduiza Burgos, Diego Alexander; Gomez Vargas, Ricardo C.; Pedraza, Cesar; Agis Cherta, David; Pozo Montero, Francesc (Multidisciplinary Digital Publishing Institute (MDPI), 2020-01-29)
      Article
      Open Access
      The damage identification process provides relevant information about the current state of a structure under inspection, and it can be approached from two different points of view. The first approach uses data-driven ...
    • Data-driven methodologies for structural damage detection based on machine learning applications 

      Vitola Oyaga, Jaime; Anaya Vejar, Maribel; Tibaduiza Burgos, Diego Alexander; Pozo Montero, Francesc (2016-12)
      Part of book or chapter of book
      Restricted access - publisher's policy
      Structural health monitoring (SHM) is an important research area, which interest is the damage identification process. Different information about the state of the structure can be obtained in the process, among them, ...
    • Data-driven multiactuator piezoelectric system for structural damage localization 

      Mujica Delgado, Luis Eduardo; Tibaduiza Burgos, Diego Alexander; Rodellar Benedé, José (2010)
      Conference lecture
      Open Access
      In initial studies, it has been shown that the combination of Principal Component Analysis (PCA) and the contribution plots of Q and T2-statistics can be considered an efficient technique to detect, distinguish and localize ...