Scientific and Research Projects

• Methods for high-resolution assessment of density variation along cross sections using dielectric dispersed slit probe
  Description of the project:

  Growth zones in tree rings reflect growth conditions during wood formation. High frequency densitometry, developed at the Institute for Forest Growth, is a simple to apply method to assess density profiles in tree rings similar on the more laborious X-ray densitometry. High frequency densitometry identifies density variations at the surface of wood. Because of the linear relation between wood density and the dielectric permittivity the electrical signal gained from scanning can be converted in density values after calibration. The measurement depth is defined by the size of the electrical field and depends on the size of the slit of the probe. Several probes are developed at the institute for different purposes of measurement with different special resolution. In this project the high frequency densitometry is further developed.
  
  contact person: Prof. Dr. Dr. h.c. Heinrich Spiecker
  Phone: +49 761 203-3736
  Email: instww@uni-freiburg.de

  Runtime:

  Start of project: 1900
  End of project: 2018

  Project Management:

  Albert-Ludwigs-University Freiburg
  Dr.Martin Schinker, Simon Boden, Prof. Dr. Dr. h.c. Heinrich Spiecker