Browsing by Author "Villamizar Mejía, Rodolfo"
Now showing items 1-20 of 27
-
Analysis of the torsional mode T(0,1) propagating in a bending pipe
(2018)
Conference lecture
Open AccessIn 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 the PCA to guided ultrasonic waves to evaluate tensile stress in a solid rod
(2015)
Conference report
Open Access -
Comparative study of two hardware development boards for implementation of PCA-based algorithms in structural damage detection
(2015)
Conference report
Open Access -
Damage detection in structures using robust baseline models
(2015)
Conference report
Open Access -
Damages detection in cylindrical metallic specimens by means of statistical baseline models and updated daily temperature profiles
(Institute of Physics (IOP), 2017)
Article
Open AccessIn previous works, damage detection of metallic specimens exposed to temperature changes has been achieved by using a statistical baseline model based on Principal Component Analysis (PCA), piezodiagnostics principle and ... -
Embedded piezodiagnostics for online structural damage detection based on PCA algorithm
(2016)
Conference report
Open AccessThis work discusses a methodology used to implement a data-driven strategy for Structural Health Monitoring. First, the instrumentation of the equipment is detailed by describing the main components to be installed in the ... -
Ensemble learning as approach for pipeline condition assessment
(Ghent University, 2017)
Conference report
Open AccessThe algorithms commonly used for damage condition monitoring present several drawbacks related to unbalanced data, optimal training requirements, low capability to manage feature diversity and low tolerance to errors. In ... -
Ensemble learning as approach for pipeline condition assessment
(Institute of Physics (IOP), 2017)
Article
Open AccessThe algorithms commonly used for damage condition monitoring present several drawbacks related to unbalanced data, optimal training requirements, low capability to manage feature diversity and low tolerance to errors. In ... -
Estimation of dispersion curves by combining effective elastic constants and SAFE method: a case study in a plate under stress
(Institute of Physics (IOP), 2017)
Article
Open AccessThis 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 ... -
Evaluation of piezodiagnostics approach for leaks detection in a pipe loop
(2016-09-30)
Article
Open AccessPipe leaks detection has a great economic, environmental and safety impact. Although several methods have been developed to solve the leak detection problem, some drawbacks such as continuous monitoring and robustness ... -
Features of cross-correlation analysis in a data-driven approach for structural damage assessment
(Multidisciplinary Digital Publishing Institute (MDPI), 2018-05-15)
Article
Open AccessThis 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
(2016-09-30)
Article
Open AccessIn 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
(2015)
Conference report
Open Access -
Implementation of a piezo-diagnostics approach for damage detection based on PCA in a linux-based embedded platform
(Multidisciplinary Digital Publishing Institute (MDPI), 2018-11-01)
Article
Open AccessThe implementation of damage-detection methods for continuously assessing structural integrity entails systems with attractive features such as storage capabilities, memory capacity, computational complexity and time-consuming ... -
Multidimensional big data processing for damage detection in real pipelines using a smart pig tool
(2016)
Conference report
Open AccessThe history of the hydrocarbons business in Colombia dates back to the early twentieth century where mining and energy sector has been one of the principal pillars for the its development. Thus, the pipelines currently in ... -
Multidimensional data statistical processing of magnetic flow leakage signals from a Colombian gas pipeline
(2020-12-15)
Article
Open AccessThe hydrocarbon industry in Colombia is one of the principal pillars for the Colombian economy, representing around 5% of its gross domestic product. Since petroleum reserves have decreased, gas becomes one main alternative ... -
PCA based stress monitoring of cylindrical specimens using PZTs and guidedwaves
(Multidisciplinary Digital Publishing Institute (MDPI), 2017-12)
Article
Open AccessSince mechanical stress in structures affects issues such as strength, expected operational life and dimensional stability, a continuous stress monitoring scheme is necessary for a complete integrity assessment. Consequently, ... -
Pipe leaks classification by using a data-driven approach based on features from cross-correlated piezo-vibration signals
(2015)
Conference report
Open Access -
Pipe leaks detection under varying environmental conditions by using a data driven approach
(2015)
Conference report
Open Access -
Sensor fault detection in a damage detection approach based on piezodiagnostics
(2016)
Conference report
Open AccessOnline monitoring systems demand an adequate operation of sensor system used to acquire structural state measurements. If a damaged sensor record is incorporated in the diagnosis algorithm, it could be generate uncertainties ...
