Invention Grant
- Patent Title: Method for stress assessment that removes temperature effects and hysteresis on the material property measurements
- Patent Title (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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Application No.: US13549875Application Date: 2012-07-16
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Publication No.: US08415947B2Publication Date: 2013-04-09
- Inventor: Yanko K. Sheiretov , Neil J. Goldfine , Todd M. Dunford , Scott A. Denenberg , David C. Grundy , Darrell E. Schlicker , Andrew P. Washabaugh , Karen E. Walrath
- Applicant: Yanko K. Sheiretov , Neil J. Goldfine , Todd M. Dunford , Scott A. Denenberg , David C. Grundy , Darrell E. Schlicker , Andrew P. Washabaugh , Karen E. Walrath
- Applicant Address: US MA Waltham
- Assignee: Jentek Sensors, Inc.
- Current Assignee: Jentek Sensors, Inc.
- Current Assignee Address: US MA Waltham
- Agency: Hamilton, Brook, Smith & Reynolds, P.C.
- Main IPC: G01R33/12
- IPC: G01R33/12 ; G01N27/72 ; G01N27/90 ; G01B7/24

Abstract:
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.
Public/Granted literature
- US20130014589A1 Test Circuit With Sense Elements Having Associated And Unassociated Primary Windings Public/Granted day:2013-01-17
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