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CHA-W Software
CHA-W is the Cross-Hole Analyzer data processing software. Its analysis tools include:
- Edge finder: detects First Arrival Time (FAT), or the moment the signal sent by the transmitter first reaches the receiver
- Evaluation of signal strength
- Defect Analysis: a visual aid for easy defect identification
CHA-W reporting tools include user customized graphs and tables showing:
- Signal strength versus time and depth (Sonic Map, Waterfall Diagram)
- FAT , wave speed and signal strength versus depth
- Mean and standard deviation of measured wave speed
- Location of defects
Download the CHA-W Demo Software
Tomosonic Software
TomoSonic is a 3D tomography imaging tool that supplements the CHA output. This analysis is useful in cases where CHA-W analysis reveals a defect but does not give a precise idea of its extent. TomoSonic helps visualize the defect in two or three dimensions. The TomoSonic software combines arrival time data from the scans of all pairs of tubes. It then analyses these data and displays it in various views.
The Geotechnical Engineering Circular Number 10 of the USA Federal Highway Administration states that Tomography “provides enhanced evaluation of potential defects” and is among techniques that “are more expensive and require specialized expertise for data interpretation, but may be warranted for large structures where the detailed information enables a more cost-effective design or eliminates uncertainty that may otherwise lead to construction cost overruns.”
TomoSonic features:
- User selected horizontal or vertical slices.
- Display shaft surface, slices, or iso-velocity curves.
- Display multiple shafts or multiple views per window.
- Full color, 2 color, or black and white for user selected ranges.
- Rotate or transform image instantly.
- View whole pile or selected vertical sections.
- Automatic calculation of percentage of section less than user selected velocity threshold.
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