Invention Grant
- Patent Title: EMUS transducer system as well as a method for producing linearly polarised transverse waves with variably predeterminable polarisation direction within a test specimen
- Patent Title (中): EMUS传感器系统以及在测试样品内产生具有可变预定极化方向的线偏振横波的方法
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Application No.: US13155427Application Date: 2011-06-08
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Publication No.: US08596129B2Publication Date: 2013-12-03
- Inventor: Frank Niese
- Applicant: Frank Niese
- Applicant Address: DE Munich
- Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung E.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung E.V.
- Current Assignee Address: DE Munich
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: DE102010023028 20100608
- Main IPC: G01N29/24
- IPC: G01N29/24 ; G01N29/00

Abstract:
An EMUS transducer system for producing linearly polarized transverse waves having a variably predeterminable polarization direction within a test specimen containing at least ferromagnetic material portions and having a test specimen surface, a magnetization unit produces a magnetic field orientated parallel to the test specimen surface within the test specimen. At least one HF coil on the test specimen surface produces or detects a HF field combined with the magnetic field orientated parallel to the test specimen surface within the test specimen. The magnetization unit includes at least three magnetization bodies spatially separated from one another to introduce a magnetic field into the test specimen. The magnetic flux emanating from at least one of magnetization bodies a spatial direction relative to the test specimen surface is varied.
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