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SIGNAL™ Software (Analysis of Raw Data Signals)



User Friendly Analysis
Files Types
Signal File System
Raw Data Signals

Frequency Isotherms




User Friendly Analysis

SIGNAL™ is a user-friendly software which is used to inspect the quality of the data collected from the SST which was developed during the Strategic Highway Research Program and further developed during the SUPERPAVE implementation.

 

File Types

Two options are currently provided for file type – those collected by the Interlaken and the Cox (ATS files) devices. The user should set the type of file before browsing the directories for the data files.

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Signal File System


The SIGNAL software uses a file system in which all data files are located in tempXXX directories under a project directory. Each of the tempXXX locations is indented for files tested at different temperatures. In the example below the project is “Lamont” for which data is present for various temperatures (-10, 0, 10, 20 and 30 C visible).




Raw data signals

The data from a test can be inspected as sine waves or as stress versus strain (energy). Typical examples of these plots are given below. Data points can be turned on and off and in addition, a smooth line conforming to a sine wave can be shown to give an indication of the signal quality.





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Frequency Isotherms


The data can be shown as frequency isotherms by checking the Frequency radio button. To display the data for multiple files click on the blue circle adjacent to each file name. The results will bedisplayed, as the circle becomes fill. The data can be expressed in two formats, G’ and G” or G* and phase angle as illustrated below.





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