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Mid-America Transportation Center

Nondestructive Evaluation of Mechanically Stabilized Earth Walls with Frequency-Modulated Continuous-Wave (FM-CW) Radar

Final Report
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Researchers

  • Principal Investigator: Genda Chen (gchen@mst.edu (573) 341-4462)
  • Co-Principal Investigator: Reza Zoughi ( zoughi@mst.edu 65409-0710)
  • Project Status
    Complete
    About this Project
    Brief Project Description & Background
    Effective techniques for a nondestructive evaluation of mechanically stabilized earth (MSE) walls during normal operation or immediately after an earthquake event are yet to be developed. The main objectives of this project are a) to quantify the laboratory performance and ability of an existing wide-band portable frequency-modulated continuous-wave (FM-CW) radar system for detection of defects behind MSE walls, and b) demonstrate the field applicability and performance of the existing radar system in MSE wall inspections. FM-CW radars offer a significant amount of information about the presence of void location and size behind an MSE wall and other anomalies such as excess moisture and its location.
    Research Objective
    The main objectives of this project are a) to quantify the laboratory performance and ability of an existing wide-band portable frequency-modulated continuous-wave (FM-CW) radar system for detection of defects behind MSE walls, and b) demonstrate the field applicability and performance of the existing radar system in MSE wall inspections.
    Potential Benefits
    Effective techniques for a nondestructive evaluation of mechanically stabilized earth (MSE) walls during normal operation or immediately after an earthquake event are yet to be developed. The proposed FM-CW radar system offers a significant amount of information about the presence of void location and size behind an MSE wall and other anomalies such as excess moisture and its location. It is a viable technology for damage detection during normal operation or immediately after an earthquake event. As such, the outcomes of this study will benefit the society in a great deal in terms of roadway safety and the state of good repairs.
    Abstract
    Effective techniques for a nondestructive evaluation of mechanically stabilized earth (MSE) walls during normal operation or immediately after an earthquake event are yet to be developed. The main objectives of this project are a) to quantify the laboratory performance and ability of an existing wide-band portable frequency-modulated continuous-wave (FM-CW) radar system for detection of defects behind MSE walls, and b) demonstrate the field applicability and performance of the existing radar system in MSE wall inspections. FM-CW radars offer a significant amount of information about the presence of void location and size behind an MSE wall and other anomalies such as excess moisture and its location.
    Project Amount
    $ 74,831