Now showing items 2-8 of 8

  • Bridge condition and safety based on measured vibration level 

    Casas Rius, Joan Ramon; Rodrigues, J. Fernando (International Association for Bridge and Structural Engineers (IABSE), 2015)
    Conference report
    Restricted access - publisher's policy
    Along the years, there were efforts by researchers in quantifying structural performance and damage in function of vibration measurements. Curves proposed by several authors try to relate acceleration spectrum to damage ...
  • Geometry of nanoindentation cube-corner cracks observed by FIB tomography: Implication for fracture resistance estimation 

    Cuadrado Lafoz, Núria; Seuba, J.; Casellas, D.; Anglada, M.; Jiménez Piqué, Emilio (Elsevier, 2015-09-01)
    Restricted access - publisher's policy
    When indenting a brittle material with a sharp indenter, cracks can be generated at the corners of the imprint. From the length of these cracks, the fracture resistance can be estimated. This technique is simple and allows ...
  • Management and safety of existing concrete structures via optical fiber distributed sensing 

    Casas Rius, Joan Ramon; Villalba Herrero, Sergi; Villalba Herrero, Vicenç (CRC Press Taylor & Francis Group, 2014)
    Part of book or chapter of book
    Restricted access - publisher's policy
    The use of Optical Backscatter Reflectometer (OBR) as a distributed fiber optic system to measure strain and detect cracking in concrete structures is investigated. A laboratory experience in a concrete slab is first ...
  • Numerical homogenization for composite materials analysis: comparison with other micro mechanical formulations 

    Otero Gruer, Fermín Enrique; Oller Martínez, Sergio Horacio; Martínez García, Javier; Salomón, Ramón Omar (2015-04)
    Restricted access - publisher's policy
    This work presents a two-scale homogenization procedure to analyze three dimension composite structures by FEM. The theory implemented is compared with other micro-structural formulations: micro models and serial parallel ...
  • Numerical simulation of failure involving multiple cracks with smoothed displacements. 

    Olm Serra, Marc (Universitat Politècnica de Catalunya, 2013-05-13)
    Minor thesis
    Open Access
    To numerically simulate a failure process, damage models can be used. In order to avoid mesh dependency problems of local damage models, nonlocal models are employed. The use of nonlocal displacements is an efficient ...
  • Strain localization and failure mechanics for elastoplastic damage solids 

    Wu, Jian-Ying; Cervera Ruiz, Miguel (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2014)
    Restricted access - publisher's policy
    This work investigates systematically strain localization and failure mechanics for elastoplastic damage solids. Two complementary methodologies, i.e., traction-based discontinuities localized in an elastic solid and strain ...
  • Structural system identification of cable-stayed bridges with observability techniques 

    Lozano Galant, Jose Antono; Nogal Macho, María; Payá Zaforteza, Ignacio Javier; Turmo Coderque, José (2014)
    Restricted access - publisher's policy
    Cable-stayed bridges are highly statically redundant, light and flexible structures. This complexity highlights the role of the structural system identification (SSI) method in the calibration of the actual properties of ...