Skeppsmask. 2 Wahlberg, Axenrot and Balk 2005 A short study of Skeppsmask in a log verus fresh wood.

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Presentation transcript:

Skeppsmask

2 Wahlberg, Axenrot and Balk 2005 A short study of Skeppsmask in a log verus fresh wood

3

4 Fresh wood left Skeppsmask right

5 Echogram 120kHz, medium pulse Fresh wood Skeppsmask

6 Fresh wood Skeppsmask

7 Fresh wood Skeppsmask Typical wobbling effect seen In a log with skeppsmask Note the stable echo in this log

8 Fresh wood Skeppsmask

9 TS Range

10 Summary of findings u Wood with “skeppsmask” returns stronger echo than fresh wood. Not expected u Wood with skeppsmask has higher fluctuations in TS than fresh wood, (not expected) u There is a difference in the ringing behind the target