发明授权
- 专利标题: Method for stress assessment that removes temperature effects and hysteresis on the material property measurements
- 专利标题(中): 应力评估方法可以消除材料性能测量中的温度影响和滞后
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申请号: US13549875申请日: 2012-07-16
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公开(公告)号: US08415947B2公开(公告)日: 2013-04-09
- 发明人: Yanko K. Sheiretov , Neil J. Goldfine , Todd M. Dunford , Scott A. Denenberg , David C. Grundy , Darrell E. Schlicker , Andrew P. Washabaugh , Karen E. Walrath
- 申请人: Yanko K. Sheiretov , Neil J. Goldfine , Todd M. Dunford , Scott A. Denenberg , David C. Grundy , Darrell E. Schlicker , Andrew P. Washabaugh , Karen E. Walrath
- 申请人地址: US MA Waltham
- 专利权人: Jentek Sensors, Inc.
- 当前专利权人: Jentek Sensors, Inc.
- 当前专利权人地址: US MA Waltham
- 代理机构: Hamilton, Brook, Smith & Reynolds, P.C.
- 主分类号: G01R33/12
- IPC分类号: G01R33/12 ; G01N27/72 ; G01N27/90 ; G01B7/24
摘要:
An apparatus for the nondestructive measurement of materials that includes at least two layers of electrical conductors. Within each layer, a meandering primary winding is used to create a magnetic field for interrogating a test material while sense elements or conducting loops within each meander provide a directional measurement of the test material condition. In successive layers extended portions of the meanders are rotated so that the sense elements provide material condition in different orientations without requiring movement of the test circuit or apparatus. Multidirectional permeability measurements are used to assess the stress or torque on a component. These measurements are combined in a manner that removes temperature effects and hysteresis on the property measurements. This can be accomplished through a correction factor that accounts for the temperature dependence.
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