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Featured researches published by Gert Fischer.


Journal of the Acoustical Society of America | 1996

Modifiable electrodynamic ultrasonic transducer

Alfred Graff; Gert Fischer; Hans-Jurgen Rohde

An electrodynamic ultrasonic transducer includes a housing to be placed against a workpiece surface to be tested. A magnet system is arranged in the housing in the vicinity of the workpiece surface to be tested. A transducer coil system is arranged between the magnet system and the workpiece surface. The housing is of a non-magnetic, electrically conducting material, and the housing wall has, in a region receiving the magnet system, segment-like recesses. Circuit closing plates are removably mounted in the recesses for ensuring a magnetic flux between the workpiece surface and the magnet system.


Archive | 2010

Device for nondestructive testing of pipes

Gert Fischer; Sven Gwildies; Michael Kaack; Alfred Graff; Ashraf Koka; Stefan Nitsche


Archive | 2012

Diffuse flow probe for non-destructive diffuse flow testing of bodies made from magnetisable material

Michael Kaack; Gert Fischer; Oliver Nemitz; Till Schmitte; Stefan Nitsche


Archive | 2010

Vorrichtung zur zerstörungsfreien Prüfung von Rohren

Gert Fischer; Sven Gwildies; Michael Kaack; Alfred Graff; Ashraf Koka; Stefan Nitsche


Archive | 2013

Streuflusssonde zur zerstörungsfreien Streuflussprüfung von Körpern aus magnetisierbarem Werkstoff

Michael Kaack; Gert Fischer; Oliver Nemitz; Till Schmitte; Stefan Nitsche


Archive | 2012

Leakage flux probe for non-destructive leakage flux-testing of bodies consisting of magnetizable material

Michael Kaack; Gert Fischer; Oliver Nemitz; Till Schmitte; Stefan Nitsche


Archive | 2011

ULTRASOUND TESTING HEAD

Alfred Graff; Gert Fischer; Karl-Heinz Breckel; Jochen Berkemeier


Archive | 2011

Streuflusssonde zur zerstörungsfreien Streuflussprüfung von Körpern aus magnetisierbarem Werkstoff Leakage flux probe for non-destructive flux leakage testing of bodies of magnetizable material

Michael Kaack; Gert Fischer; Oliver Nemitz; Till Schmitte; Stefan Nitsche


Archive | 2010

Method for tracking unique materials of hollow structure e.g. ferromagnetic steel pipe, involves providing distinct marks for identification of material at pipe surface, in form of magnetic marks in different directions of magnetization

Gert Fischer; Kaack Michael; Koka Ashraf; Stefan Nitsche; Schuster Ellen


Archive | 2010

A non-destructive testing ultrasonic probe having a cavity type lead wedge

Alfred Graff; Gert Fischer; Karl-Heinz Breckel; Jochen Berkemeier

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