Browsing by Author "Zhang, Ming"

Now showing items 1-6 of 6

    • DEM modelling of dynamic penetration in granular material 

      Zhang, Ming; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; Ciantia, Matteo Oryem (CRC Press, 2018)
      Conference lecture
      Restricted access - publisher's policy
      Dynamic penetration has been widely employed in some site investigation procedures and for the installation of driven piles. A 3-dimensional discrete element method model has been developed to simulate dynamic rod penetration ...

    • Experimental and numerical investigation on the influence of a large crack on the modal behaviour of a Kaplan turbine blade 

      Zhang, Ming; Valentín Ruiz, David; Valero Ferrando, Ma. del Carmen; Presas Batlló, Alexandre; Egusquiza Montagut, Mònica; Egusquiza Estévez, Eduard (Elsevier, 2020-01-01)
      Article
      Open Access
      A large crack was discovered on one blade of a Kaplan turbine prototype after the inspection of the machine. In order to know the origin of the crack, a failure analysis was previously carried out (Zhang et al., 2019). To ...

    • Failure investigation of a Kaplan turbine blade 

      Zhang, Ming; Valentín Ruiz, David; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Egusquiza Estévez, Eduard (Elsevier, 2019-03-01)
      Article
      Open Access
      In this paper, an uncommon failure of a Kaplan turbine blade has been analyzed. After the monitoring system detected a sudden increase in vibration levels, the turbine was inspected. The inspection showed that a large crack ...

    • Numerical study on the dynamic behavior of a francis turbine runner model with a crack 

      Zhang, Ming; Valentín Ruiz, David; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Zhao, Weiqiang (2018-01-01)
      Article
      Open Access
      Crack appearance in the blade is the most common type of fatigue damage in Francis turbines. However, it is sometimes difficult to detect cracks in time using the current monitoring system, even when they are very large. ...

    • On the changes in dynamic behavior produced by the hydraulic turbine runner damage 

      Zhang, Ming (Universitat Politècnica de Catalunya, 2019-07-17)
      Doctoral thesis
      Open Access
      Hydropower plays a very important role in the world electricity generation nowadays. Hydropower is one type of renewable energy and is the only renewable energy source that can provide a wide range of power regulation with ...

    • The TALP & I2R SMT Systems for IWSLT 2008 

      Li, H.; Aw, A.; Zhang, Ming; Khalilov, Maxim; Ruiz Costa-Jussà, Marta; Henríquez Quintana, Carlos Alberto; Rodríguez Fonollosa, José Adrián; Hernández, A.; Mariño Acebal, José Bernardo; Banchs Martínez, Rafael Enrique; Chen, B. (NICT/ATR, 2008-10-31)
      Conference lecture
      Open Access
      This paper gives a description of the statistical machine translation (SMT) systems developed at the TALP Research Center of the UPC (Universitat Polit`ecnica de Catalunya) for our participation in the IWSLT’08 evaluation ...