公开(公告)号：US20130221950A1

公开(公告)日：2013-08-29

申请号：US13775903

申请日：2013-02-25

Applicant: Polycontact AG

Inventor： Josua LANTER

IPC: G01L1/12

CPC classification number: G01L1/12 ,  G01L1/122 ,  G01L1/125 ,  G01L3/102

Abstract: A method and measurement arrangement are disclosed for measuring mechanical stress in ferromagnetic workpieces, in which a ferromagnetic workpiece impresses a magnetic field and a magnetic field value is measured and analyzed with respect to the mechanical stress. The method includes at least two exciters of the magnetic field arranged along a longitudinal extension of the workpiece such that a section of the workpiece is located between the two exciters of the magnetic field. A direction-dependent magnetic field sensor is arranged at a position along the longitudinal extension of the workpiece, which can be at half the distance between the two exciters of the magnetic field. With the direction-dependent magnetic field sensor, the change in position and/or the direction of a dividing line between the north and south poles of the impressed magnetic field is determined and analyzed.

Abstract translation: 公开了一种用于测量铁磁工件中的机械应力的方法和测量装置，其中铁磁性工件施加磁场并且相对于机械应力测量和分析磁场值。 该方法包括沿着工件的纵向延伸布置的磁场的至少两个激励器，使得工件的一部分位于磁场的两个激励器之间。 方向依赖的磁场传感器布置在沿着工件的纵向延伸的位置，该位置可以是两个磁场激发器之间的距离的一半。 利用方向依赖的磁场传感器，确定和分析了外加磁场的北极和南极之间的分界线的位置和/或方向的变化。