Sensor and methods of detecting target materials and situations in closed systems

Mee, David K.; Ripley, Edward B.; Nienstedt, Zachary C.; Nienstedt, Alex W.; Howell, Jr., Layton N.

Sensor and methods of detecting target materials and situations in closed systems

Patent · 13 March 2018

OSTI ID:1426760

Mee, David K.; Ripley, Edward B.; Nienstedt, Zachary C.; Nienstedt, Alex W.; Howell, Jr., Layton N.

Disclosed is a passive, in-situ pressure sensor. The sensor includes a sensing element having a ferromagnetic metal and a tension inducing mechanism coupled to the ferromagnetic metal. The tension inducing mechanism is operable to change a tensile stress upon the ferromagnetic metal based on a change in pressure in the sensing element. Changes in pressure are detected based on changes in the magnetic switching characteristics of the ferromagnetic metal when subjected to an alternating magnetic field caused by the change in the tensile stress. The sensing element is embeddable in a closed system for detecting pressure changes without the need for any penetrations of the system for power or data acquisition by detecting changes in the magnetic switching characteristics of the ferromagnetic metal caused by the tensile stress.

Research Organization:: Oak Ridge Y-12 Plant (Y-12), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: NA0001942

Assignee:: Consolidated Nuclear Security, LLC (Oak Ridge, TN)

Patent Number(s):: 9,915,575

Application Number:: 14/832,482

OSTI ID:: 1426760

Country of Publication:: United States

Language:: English

References (9)

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Sensor and methods of detecting target materials and situations in closed systems

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