Journal ArticleDOI
A statistical approach for evaluating crack defects in structures under dynamic responses
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TLDR
A new approach to processing data in identifying and evaluating defects of structures with deformation measurement signals by using sensitive characteristics observed in the old statistical parameters such as mean values, variances, and standard deviations, including kurtosis, skewness of signals, and statistical density function is presented.Abstract:
This article presents a new approach to processing data in identifying and evaluating defects of structures with deformation measurement signals. By using sensitive characteristics observed in the ...read more
Citations
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Journal ArticleDOI
A data-driven approach based on wavelet analysis and deep learning for identification of multiple-cracked beam structures under moving load
Thanh Q. Nguyen,Thanh Q. Nguyen,Luan C. Vuong,Luan C. Vuong,Canh M. Le,Nhi K. Ngo,Nhi K. Ngo,H. Nguyen Xuan,H. Nguyen Xuan +8 more
TL;DR: This study concurrently identifies all three criteria of defect assessment, namely: quantity, location and growth rate, and has high potential for practical application to most structures.
Journal ArticleDOI
Detecting and Evaluating Defects in Beams by Correlation Coefficients
Thanh Q. Nguyen,Hoang B. Nguyen +1 more
TL;DR: In this article, the authors proposed a correlation coefficient for detecting and evaluating defects in beams, which brings about a positive outcome in terms of accuracy and efficiency, which surpasses other parameters such as natural frequency and damping coefficient, thanks to its sensitivity to structural changes.
Journal ArticleDOI
A Data-Driven Approach to Structural Health Monitoring of Bridge Structures Based on the Discrete Model and FFT-Deep Learning
TL;DR: This research investigates changes in the mechanical properties of complex structures using a combination of the discrete model, Fast Fourier Transform (FFT) analysis and deep learning, and applies deep learning in the noise reduction process for the original data.
Journal ArticleDOI
A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, Vietnam
TL;DR: The idea behind this method is to use the representative power spectrum density as a powerful tool to evaluate the stiffness decline of spans during their operation period and a new measurement method has been introduced to replace the traditional method of monitoring the health conditions of bridges through a periodic measurement technique.
References
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Journal ArticleDOI
A continuous cracked beam vibration theory
TL;DR: In this paper, a continuous cracked beam vibration theory is developed for the lateral vibration of cracked Euler-Bernoulli beams with single-edge or double-edge open cracks.
Journal ArticleDOI
One-dimensional theory of cracked Bernoulli-Euler beams
S. Christides,A.D.S. Barr +1 more
TL;DR: In this paper, the authors derived the differential equation and associated boundary conditions for a nominally uniform Bernoulli-Euler beam containing one or more pairs of symmetric cracks and achieved the reduction to one spatial dimension using integrations over the cross-section after plausible stress, strain, displacement and momentum fields are chosen.
Journal ArticleDOI
Free Vibrations of Beams With a Single-Edge Crack
M.-H. H. Shen,Christophe Pierre +1 more
TL;DR: In this article, the authors derived the equation of motion and associated boundary conditions for a uniform Bernoulli-Euler beam containing one single-edge crack and evaluated the rate of exponential decay from finite element calculations.