| Added on 02/01/2012 | Tool (Decay) |
Arborsonic Decay Detector (ADD)
The Arborsonic Decay Detector (ADD) uses ultrasound to detect and evaluate internal decay within trees.
An ultrasonic signal (77kHz) is passed through the tree between two transducers (transmitter and receiver). The signal speed is very fast – about 2000 metres/sec.
Because the signal travels fastest in the solid part of the wood structure, any areas of decay or defects will cause the speed of the signal to go slower. The time taken is measured and displayed. It can then be compared to ideal transit times for this tree species/stem diameter.
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