NUMERICAL SIMULATION OF ULTRASONIC DETECTION FOR CONCRETE STRUCTURE BASED ON EQUIVALENT OFFSET MIGRATION

Authors

  • Mingshun Hu China University of Mining and Technology, Key Laboratory of Gas and Fire Control for Coal Mines, Xuzhou, China
  • Juanjuan Li China University of Mining and Technology, IoT Perception Mine Research Center, Xuzhou, China
  • Dongming Pan China University of Mining and Technology, School of Resource and Geosciences, Xuzhou, China
  • Shenen Chen University of North Carolina at Charlotte, Department Civil of and Environmental Engineering. Charlotte, USA

DOI:

https://doi.org/10.14311/CEJ.2017.04.0040

Keywords:

Equivalent offset migration (EOM), Common scatter point (CSP) gather, Non-destructive testing (NDT), Ultrasonic wave; Concrete

Abstract

Ultrasonic wave testing is a classic Non-destructive testing (NDT) method to detect, locate and monitor the crack/fracture in construction materials. However, it is still hard to examine those small abnormal bodies since effective reflected signal from abnormity is usually rather weak. In this paper, a new ultrasound imaging technique, equivalent offset migration (EOM), is studied to demonstrate the feasibility and applicability for detecting concrete cracks. Thus, a complex numerical model along with six small scale flaws was built, and then the ultrasonic wave propagation in concrete was modeled by high order finite difference approximation method. Numerical simulation indicates that 1) there exists a strong scattering phenomenon while ultrasound propagates in concrete with multiple small scatter flaws, and 2) EOM is capable of imaging small flaws in concrete with high resolution and accuracy.

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References

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Published

2017-12-31

How to Cite

Hu, M., Li, J., Pan, D., & Chen, S. (2017). NUMERICAL SIMULATION OF ULTRASONIC DETECTION FOR CONCRETE STRUCTURE BASED ON EQUIVALENT OFFSET MIGRATION. Stavební Obzor - Civil Engineering Journal, 26(4). https://doi.org/10.14311/CEJ.2017.04.0040

Issue

Vol. 26 No. 4 (2017)

Section

Articles

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