G - Physics – 01 – L
Patent
G - Physics
01
L
G01L 1/12 (2006.01)
Patent
CA 2493216
The present invention relates to a method of measuring stress/strain by means of the Barkhausen noise and is characterized in that an exciting/sensing device (1; 2,3; 2,7) is arranged at least adjacent to a magnetic or magnetizable element (4; 5), in that the exciting device (1; 2) is acted upon by a rising magnetizing current, in that the start of the Barkhausen noise in the element (4; 5) is detected as a function of the magnetizing current by means of the sensing device (1; 3; 7), the starting of the Barkhausen noise representing a measurement of the stress/strain condition of the element (4; 5).
L'invention concerne un procédé pour mesurer une tension / extension par le bruit Barkhausen. L'invention est caractérisée en ce qu'un dispositif excitateur/capteur (1; 2, 3; 2,7) est disposé au moins à proximité d'un élément (4; 5) magnétique ou magnétisable, ce dispositif excitateur/capteur (1; 2) est soumis à un courant de magnétisation croissant, et l'introduction du bruit Barkhausen dans l'élément (4; 5) est saisie en fonction du courant de magnétisation au moyen du dispositif capteur (1; 3; 7), cette introduction du bruit Barkhausen étant une grandeur pour la mesure de l'état de tension/d'extension (4; 5) de l'élément.
Halm Juergen
Zimmermann Werner
Airbus Deutschland Gmbh
Airbus Operations Gmbh
Eads Deutschland Gmbh
Marks & Clerk
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