Invention Grant
US09404989B2 Method for calibrating a measuring device for inspecting surfaces on the basis of Barkhausen noises for a specified component geometry
有权
用于校准基于Barkhausen噪声检查表面的测量装置的方法,用于指定的组件几何形状
- Patent Title: Method for calibrating a measuring device for inspecting surfaces on the basis of Barkhausen noises for a specified component geometry
- Patent Title (中): 用于校准基于Barkhausen噪声检查表面的测量装置的方法,用于指定的组件几何形状
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Application No.: US14385799Application Date: 2013-03-04
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Publication No.: US09404989B2Publication Date: 2016-08-02
- Inventor: Oliver Bleicher , Herman Yakaria , Yiwen Xu
- Applicant: ZF Friedrichshafen AG
- Applicant Address: DE Friedrichshafen
- Assignee: ZF Friedrichshafen AG
- Current Assignee: ZF Friedrichshafen AG
- Current Assignee Address: DE Friedrichshafen
- Agency: Davis & Bujold, PLLC
- Agent Michael J. Bujold
- Priority: DE102012205676 20120405
- International Application: PCT/EP2013/054229 WO 20130304
- International Announcement: WO2013/149775 WO 20131010
- Main IPC: G01R35/00
- IPC: G01R35/00 ; G01N27/72 ; G01N27/80

Abstract:
A method for enhancing inspection of components of specific geometry based on Barkhausen noises. The method includes specifying a first calibration curve that is independent of the component geometry, which describes the relationship between surface hardness values and measured Barkhausen noise signals. A first noise signal is determined by the measuring device for a reference component having the specified geometry and a first hardness value. A second noise signal is determined for a second reference component, having the specified geometry and a second hardness value lower than the first. A second calibration curve is determined, in which the first calibration curve is fitted to the first noise signal at the first hardness value and to the second noise signal at the second hardness value, such that using the second calibration curve, the measured noise signal of a component having the specified geometry relates with a surface hardness value.
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