专利汇可以提供GMR-BASED DETECTION OF DEFECTS IN CONDUCTING MATERIALS专利检索,专利查询,专利分析的服务。并且An apparatus (30) and method for detecting defects in electrically conductive materials. A detection method (30) and apparatus (30) are provided for using applied magnetic fields (25) to induce magnetics fields in the material under test (20), and then directly detecting changes in the induced magnetic field (26) attributable to corrosion, cracks, flaws, or anomalies in the material under test (20). The invention features the use of one or more giant magnetoresistance sensors (50) to detect directly the changes in the induced magnetic field (26), which changes provoke a response in the giant magnetoresistance sensors (50) in the form of a change in resistance signal. Various modes of configuring the apparatus (30) are disclosed, including absolute field detection and differential field detection configurations, with either passive or active field compensation, and single sensor (50) or multiple sensor (50, 60, 61, 62) arrays. A plurality of giant magnetoresistance sensors (50) may be disposed upon a single substrate (64), or on multiple substrates (64, 66, 67). A method for performing detection by use of giant magnetoresistance (50) is disclosed.,下面是GMR-BASED DETECTION OF DEFECTS IN CONDUCTING MATERIALS专利的具体信息内容。
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