Statistical pattern recognition and damage detection in structural health monitoring of civil infrastructure systems

2009 ◽  
pp. 305-335
Author(s):  
K Worden ◽  
G Manson ◽  
S Rippengill
Keyword(s):  
Pattern Recognition ◽  
Structural Health Monitoring ◽  
Damage Detection ◽  
Health Monitoring ◽  
Statistical Pattern Recognition ◽  
Civil Infrastructure ◽  
Infrastructure Systems ◽  
Structural Health ◽  
Statistical Pattern

scholarly journals Big Data Analytics and Structural Health Monitoring: A Statistical Pattern Recognition-Based Approach

Sensors ◽  
2020 ◽  
Vol 20 (8) ◽  
pp. 2328 ◽  
Author(s):  
Alireza Entezami ◽  
Hassan Sarmadi ◽  
Behshid Behkamal ◽  
Stefano Mariani
Keyword(s):  
Pattern Recognition ◽  
Feature Extraction ◽  
Big Data ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Statistical Pattern Recognition ◽  
Statistical Decision ◽  
Structural Health ◽  
Statistical Pattern ◽  
Arma Modeling

Recent advances in sensor technologies and data acquisition systems opened up the era of big data in the field of structural health monitoring (SHM). Data-driven methods based on statistical pattern recognition provide outstanding opportunities to implement a long-term SHM strategy, by exploiting measured vibration data. However, their main limitation, due to big data or high-dimensional features, is linked to the complex and time-consuming procedures for feature extraction and/or statistical decision-making. To cope with this issue, in this article we propose a strategy based on autoregressive moving average (ARMA) modeling for feature extraction, and on an innovative hybrid divergence-based method for feature classification. Data relevant to a cable-stayed bridge are accounted for to assess the effectiveness and efficiency of the proposed method. The results show that the offered hybrid divergence-based method, in conjunction with ARMA modeling, succeeds in detecting damage in cases strongly characterized by big data.

scholarly journals Structural Health Monitoring of a Prestressed Concrete Bridge Based on Statistical Pattern Recognition of Continuous Dynamic Measurements Over 14 Years

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4117 ◽  
Author(s):  
Wei-Hua Hu ◽  
De-Hui Tang ◽  
Jun Teng ◽  
Samir Said ◽  
Rolf. G. Rohrmann
Keyword(s):  
Pattern Recognition ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Prestressed Concrete ◽  
Natural Frequencies ◽  
Statistical Pattern Recognition ◽  
Health Index ◽  
Structural Health ◽  
Structural Deterioration ◽  
Statistical Pattern

This work describes a vibration-based structural health monitoring of a prestressed-concrete box girder bridge on the A100 Highway in Berlin by applying statistical pattern recognition technique to a huge amount of data continuously collected by an integrated monitoring system during the period from 2000 to 2013. Firstly, the general condition and potential damage of the bridge is described. Then, the dynamic properties are extracted from 20 velocity sensors. Environmental variability captured by five thermal transducers and traffic intensity approximately estimated by strain measurements are also reported. Nonlinear influences of temperature on natural frequencies are observed. Subsequently, the measurements during the first year are used to build a baseline health index. The multiple linear regression (MLR) method is used to characterize the nonlinear relationship between natural frequencies and temperatures. The Euclidean distance of the residual errors is calculated to build a statistical health index. Finally, the indices extracted from the following years gradually deviate; which may indicate structural deterioration due to loss of prestress in the prestressed tendons.

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