An improved approach to evaluating pile length using complex continuous wavelet transform analysis

Sheng Huoo Ni, Ji Lung Li, Yu Zhang Yang, Zih Tong Yang

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

Non-destructive testing has been used widely for the integrity testing of piles, especially low-strain testing methods, for example the sonic echo test, the impulse response method, etc. The length of a long pile is often difficult to evaluate correctly due to the fact that the energy of a reflected stress wave generally fades with the wave travel path during testing. The purpose of this paper is to use the three-dimensional amplitude and phase angle message of a complex continuous wavelet transform to determine the length of piles by analysing a time-frequency phase angle diagram. Five piles of different lengths were tested to verify the new approach used in this study. The testing results show that a complex continuous wavelet transform is not only able to provide high-resolution results in different frequency bands but can also simplify the identification of the reflection point using the three-dimensional phase angle spectrum. The pile length and pile tip condition can be easily determined using a phase angle diagram under the corresponding frequency of maximum amplitude in the three-dimensional amplitude spectrum.

原文English
頁(從 - 到)318-324
頁數7
期刊Insight: Non-Destructive Testing and Condition Monitoring
59
發行號6
DOIs
出版狀態Published - 2017 6月

All Science Journal Classification (ASJC) codes

  • 材料力學
  • 機械工業
  • 金屬和合金
  • 材料化學

指紋

深入研究「An improved approach to evaluating pile length using complex continuous wavelet transform analysis」主題。共同形成了獨特的指紋。

引用此