As the set of dots moves across this plot, this indicates that the SounDAR device was moving, and the location of the impact correlates with the data sets in the top and middle plots. The black dot in this figure indicates the microphone/impactor pair on SounDAR that corresponds to the top and middle data sets, while the other 11 green dots correspond to other microphone/impactors that were used to develop the rest of this plot. SounDAR has 12 microphone / impactor pairs. Degraded areas are presented on a severity type color plot that indicates relative degradation detected with SounDAR.
These results of HRV are provided in 4K resolution with overlaid SounDAR data identifying other physical features of the bridge deck such as debonding, patching, and delaminations.īottom: This figure presents the final output of a SounDAR inspection overlaid on top of high resolution video (HRV) data.
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The HRV camera is capable of capturing a full lane width of data per driving pass. HRV data results in a visual map of the bridge deck collected utilizing a 4k high-resolution video camera. This service is paired with other NDE techniques such as GPR and IR, but most importantly with HRV.
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In this way, it provides an automated NDT method similar to manual sounding at a fraction of the cost. SoundDAR utilizes a novel analysis method that replicates the function of the human ear by detecting changes in frequency, amplitude, and relative energy distribution.
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