Central Basics of Sonic Tree Tomography

  • Frank Rinn
  • Published 2015
By Frank Rinn INTRODUCTION Sonic measurements have been used for strength classification of utility poles since the 1960’s. Tapping with a hammer on one side of the pole induces a sound wave. A sensor at the other end of the pole detects when the stress wave arrives. The distance between tapping point and detector location is then divided by the measured… CONTINUE READING