Now showing items 1-8 of 8

    • 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 ...
    • Estimation of dispersion curves by combining effective elastic constants and SAFE method: a case study in a plate under stress 

      Quiroga, Jabid; Mujica Delgado, Luis Eduardo; Villamizar Mejía, Rodolfo; Ruiz Ordóñez, Magda; Camacho-Navarro, Jhonatan (Institute of Physics (IOP), 2017)
      Article
      Open Access
      This paper presents an approach to calculate dispersion curves for homogeneous and isotropic plates subject to stress, via Semi-Analytical Finite Element and the Effective Elastic Constants, since stresses in the waveguide ...
    • Features of cross-correlation analysis in a data-driven approach for structural damage assessment 

      Camacho Navarro, Jhonatan; Ruiz Ordóñez, Magda; Villamizar Mejía, Rodolfo; Mujica Delgado, Luis Eduardo; Quiroga, Jabid (Multidisciplinary Digital Publishing Institute (MDPI), 2018-05-15)
      Article
      Open Access
      This work discusses the advantage of using cross-correlation analysis in a data-driven approach based on principal component analysis (PCA) and piezodiagnostics to obtain successful diagnosis of events in structural ...
    • Flow estimation in a steel pipe using guided waves 

      Quiroga, John; Quiroga, Jabid; Mujica Delgado, Luis Eduardo; Villamizar Mejía, Rodolfo; Ruiz Ordóñez, Magda (2016-09-30)
      Article
      Open Access
      In this investigation, a flow rate estimation guided wave based scheme in pipes is proposed. The effect of the fluid over the propagation of longitudinal waves has been experimentally studied by using several laminar ...
    • Guided ultrasonic wave for monitoring stress levels in pipelines 

      Quiroga, Jabid; Villamizar Mejía, Rodolfo; Mujica Delgado, Luis Eduardo; Quiroga, John; Ruiz Ordóñez, Magda (2015)
      Conference report
      Open Access
    • Signal-based bending stress monitoring using guided waves in hollow cylinders 

      Quiroga, Jabid; Mujica Delgado, Luis Eduardo; Villamizar Mejía, Rodolfo; Ruiz Ordóñez, Magda; Camacho-Navarro, Jhonatan (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2017)
      Conference report
      Restricted access - publisher's policy
      This work provides a time domain approach to detect stress changes in hollow cylinders using low frequency ultrasound guided waves; the proposed scheme makes uses of the subtract method for stress level estimation. Residuals ...
    • Structural damage continuous monitoring by using a data driven approach based on principal component analysis and cross-correlation analysis 

      Camacho-Navarro, Jhonatan; Ruiz Ordóñez, Magda; Villamizar Mejía, Rodolfo; Mujica Delgado, Luis Eduardo; Moreno Beltran, Gustavo Adolfo; Quiroga, Jabid (Institute of Physics (IOP), 2017)
      Article
      Open Access
      Continuous monitoring for damage detection in structural assessment comprises implementation of low cost equipment and efficient algorithms. This work describes the stages involved in the design of a methodology with high ...
    • Temperature robust PCA based stress monitoring approach 

      Quiroga, Jabid; Quiroga, John; Mujica Delgado, Luis Eduardo; Villamizar Mejía, Rodolfo; Ruiz Ordóñez, Magda (2016-09-30)
      Article
      Open Access
      In this paper, a guided wave temperature robust PCA-based stress monitoring methodology is proposed. It is based on the analysis of the longitudinal guided wave propagating along the path under stress. Slight changes in ...