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Title
Verfahren und Vorrichtung zum Ueberwachen des Auftretens oder Ausbereitens von Bruechen oder Rissen in Materialien, Werkstuecken, Bauteilen, Bauwerken oder Himmelskoerpern, insbesondere in erdbebengefaehrdeten Gebieten oder bei Gebirgsbewegungen im Tunnelbau
Date Issued
1994
Author(s)
Lovse, H.
Senf, H.
Zimmermann, G.
Winkler, S.
Patent No
1989-1608
Abstract
A process and device for monitoring the occurrence of cracks, fractures, earthquakes and movement of strata is based on the principle that events of this sort are associated with electrical field changes. The electrical field changes associated with the occurrence of events of this sort are recorded by a field probe (1) which has metallic probe elements (2, 3) which supply a differential amplifier (5) whose output signal (6) supplies an analyzer (10, 11).
Language
de
Patenprio
DE 1989-1608 U: 19890213