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A platform for research: civil engineering, architecture and urbanism
Improved stack imaging of spectral amplitude based on the impact echo method for identification of defects in grout-filled lap connection
https://orcid.org/0000-0003-1631-0583
https://orcid.org/0000-0001-5709-5133
Highlights Grouting defects with different sizes, embedment depths and arrangements were designed for the impact echo test. The imaging results of SIBIE are improved by filtering the echo signal and stacking of multiple collection points signals. The results of FFT and WT signal processing were compared with the improved SIBIE imaging results.
Abstract In this paper, we designed defects considering different sizes, burial depths and arrangement modes in the grout-filled lap connection specimens to carry out impact echo test. Different signal processing methods, including Fast Fourier Transform (FFT), Wavelet Transform (WT), and improved Stack Imaging of spectral amplitude based on the Impact Echo (SIBIE), were used to analyze the data. The results show that the improved SIBIE method can efficiently increase the accuracy of multi-media interface defect imaging by filtering the original echo signal and smoothing the spectrum. The superposition of multiple sets of data can eliminate the adverse effects of abnormal samples.
Improved stack imaging of spectral amplitude based on the impact echo method for identification of defects in grout-filled lap connection
https://orcid.org/0000-0003-1631-0583
https://orcid.org/0000-0001-5709-5133
Highlights Grouting defects with different sizes, embedment depths and arrangements were designed for the impact echo test. The imaging results of SIBIE are improved by filtering the echo signal and stacking of multiple collection points signals. The results of FFT and WT signal processing were compared with the improved SIBIE imaging results.
Abstract In this paper, we designed defects considering different sizes, burial depths and arrangement modes in the grout-filled lap connection specimens to carry out impact echo test. Different signal processing methods, including Fast Fourier Transform (FFT), Wavelet Transform (WT), and improved Stack Imaging of spectral amplitude based on the Impact Echo (SIBIE), were used to analyze the data. The results show that the improved SIBIE method can efficiently increase the accuracy of multi-media interface defect imaging by filtering the original echo signal and smoothing the spectrum. The superposition of multiple sets of data can eliminate the adverse effects of abnormal samples.
Improved stack imaging of spectral amplitude based on the impact echo method for identification of defects in grout-filled lap connection
https://orcid.org/0000-0003-1631-0583
https://orcid.org/0000-0001-5709-5133
Highlights Grouting defects with different sizes, embedment depths and arrangements were designed for the impact echo test. The imaging results of SIBIE are improved by filtering the echo signal and stacking of multiple collection points signals. The results of FFT and WT signal processing were compared with the improved SIBIE imaging results.
Abstract In this paper, we designed defects considering different sizes, burial depths and arrangement modes in the grout-filled lap connection specimens to carry out impact echo test. Different signal processing methods, including Fast Fourier Transform (FFT), Wavelet Transform (WT), and improved Stack Imaging of spectral amplitude based on the Impact Echo (SIBIE), were used to analyze the data. The results show that the improved SIBIE method can efficiently increase the accuracy of multi-media interface defect imaging by filtering the original echo signal and smoothing the spectrum. The superposition of multiple sets of data can eliminate the adverse effects of abnormal samples.
Improved stack imaging of spectral amplitude based on the impact echo method for identification of defects in grout-filled lap connection
Yao, Fei (author) / Chu, Jinchao (author) / Lu, Xingqi (author)
2023-07-04
Article (Journal)
Electronic Resource
English
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