The objective of this study is to develop a reliable and effective method to analyze the signal
of the impact echo test. The impact echo test is a nondestructive testing technique for civil …

This research develops a signal processing method for the impact-echo test based on the
empirical mode decomposition (EMD) in the Hilbert–Huang transform (HHT). First, apply the …

In this study, an amplitude-adaptive wavelet transform is proposed and defined as an
average of overlapped short-time wavelet transforms with optimized time-varying resolution …

The detection and identification of internal defects in a material require the use of some
technology that translates the hidden interior damages into observable signals with different …

A novel non-destructive Compton scattering technique is described to ensure the feasibility,
reliability and applicability of detecting the reinforcing steel bar in concrete. The …

In this study, a multi-bandwidth wavelet transform of signals with mixed frequencies from
multiple delamination mechanisms is proposed to achieve the time and frequency resolution …

In this study, a synchro-squeezed adaptive wavelet transform (SSAWT) is proposed and
defined as an average of overlapped short-time wavelet transforms with optimized time …

A new approach for the analysis of stress intensity factors (SIFs) for cracked plane plate is
proposed based on the wavelet finite element method using the scaling functions of B-spline …

The Wigner-Ville Distribution is a new numerical analysis tool for signal process technique
in the time-frequency domain and it can offer assistance and enhance signal characteristics …

Abstract" Time-varying structural systems are often encountered in civil engineering. As
extreme events occur more frequently and severely in recent years, more structures are …