Title:
STRESS SENSOR
Document Type and Number:
Japanese Patent JP2015215231
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a stress sensor capable of suppressing the problem that stress occurring in an object to be detected cannot be accurately detected.SOLUTION: A stress sensor 11 includes: first and second stress transmission members 21, 22 that transmit stress f generated in an object to be detected; a magnetostrictive material 3 whose magnetic permeability changes according to distortion with the stress f transmitted through the first and second stress transmission members 21, 22; a magnet 4 that generates magnetic flux; and a detection element 5 that detects the magnetic flux passing through the magnetostrictive material 3. The magnetostrictive material 3 is held between the first and second stress transmission members 21, 22 aligned in the direction of the stress f, and the magnetic flux detected by the detection element 5 changes with change of the magnetic permeability of the magnetostrictive material 3.
Inventors:
IKEDA YUKIO
SANO HIROHISA
NAKAMURA TERUYUKI
FUTATSUMORI KEIKO
SANO HIROHISA
NAKAMURA TERUYUKI
FUTATSUMORI KEIKO
Application Number:
JP2014097949A
Publication Date:
December 03, 2015
Filing Date:
May 09, 2014
Export Citation:
Assignee:
HITACHI METALS LTD
International Classes:
G01L1/00; G01L1/12
Domestic Patent References:
| JP2010038913A | 2010-02-18 | |||
| JPH0719970A | 1995-01-20 | |||
| JP2003194639A | 2003-07-09 | |||
| JP2005037264A | 2005-02-10 | |||
| JPH0261530A | 1990-03-01 | |||
| JPS6023743U | 1985-02-18 |
Foreign References:
| US20040211268A1 | 2004-10-28 |
Attorney, Agent or Firm:
Tadao Hirata
Kenji Tsunoda
Yuji Iwanaga
Keiko Nakamura
Endo Wako
Takashi Nomiyama
Hiroyuki Ito
Kenji Tsunoda
Yuji Iwanaga
Keiko Nakamura
Endo Wako
Takashi Nomiyama
Hiroyuki Ito