公开(公告)号：EP1922544A4

公开(公告)日：2015-12-23

申请号：EP06794075

申请日：2006-09-08

申请人： KUOPION YLIOPISTO

发明人： LAPPALAINEN REIJO ,  MIETTINEN PEKKA ,  TIITTA MARKKU

IPC分类号： G01N29/14 ,  F26B25/22 ,  G01N20060101 ,  G01N27/02 ,  G01N29/30 ,  G01N33/46

CPC分类号： G01N29/14 ,  F26B25/22 ,  F26B2210/16 ,  G01N27/026 ,  G01N29/30 ,  G01N33/46 ,  G01N2291/0238 ,  G01N2291/02466 ,  G01N2291/0254

公开(公告)号：EP1922544A1

公开(公告)日：2008-05-21

申请号：EP06794075.9

申请日：2006-09-08

申请人： Kuopion Yliopisto

发明人： LAPPALAINEN, Reijo ,  MIETTINEN, Pekka ,  TIITTA, Markku

IPC分类号： G01N29/14 ,  F26B25/22

CPC分类号： G01N29/14 ,  F26B25/22 ,  F26B2210/16 ,  G01N27/026 ,  G01N29/30 ,  G01N33/46 ,  G01N2291/0238 ,  G01N2291/02466 ,  G01N2291/0254

摘要： The present invention relates to a method for the determination of the stresses occurring in wood when drying or being dried. With the method in accordance with the invention, electrodes (1) are used to generate an electric field in drying wood (2) in order to measure the electric complex spectrum using the impedance spectroscopy method while at the same time employing sensors (3) to measure acoustic emissions from drying wood and using the results for calculating the parameters required for determining the stress state existing in the wood and for monitoring and/or controlling the drying process.