Piezo-electric material, its manufacturing method, a contact detecting device, a load detecting device, and an abnormal condition detecting device

Japanese Patent JP6275018

B2

PROBLEM TO BE SOLVED: To provide a piezoelectric material that can be enhanced in piezoelectric performance and load bearing performance, a manufacturing method for the same, a contact detection device, a load detection device and an abnormality state detection device.SOLUTION: In a piezoelectric material 1, plural piezoelectric particles 2 are arranged in a predetermined direction in a base material 3, and when a load acts in the predetermined direction, power is generated. The piezoelectric material 1 is a projection orientation type composite piezoelectric material in which the piezoelectric particles 2 are arranged in the base material 3 so as to project from the base material surface 3a. In the piezoelectric material 1, the piezoelectric particles 2 on which the load acts project from the base material surface 3a, and a part of the particle surface 2a of each piezoelectric particle 2 projecting from the base material surface 3a is held by the base material 3. Therefore, the load is made to act on the piezoelectric particles 2 projecting from the base material surface 3a, and the load is made to intensively act on the plural piezoelectric particles 2 arranged in the base material 3, whereby the base material 3 is enabled to enhance the piezoelectric performance.SELECTED DRAWING: Figure 2

Shogo Makita
Naoyuki Yaguchi
S. Okada

JP2014237536A

February 07, 2018

November 25, 2014

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Railway Technical Research Institute

H01L41/18; G01L1/16; H01L41/113; H01L41/37

JP2008108762A
JP2008532349A
JP61046083A
JP2004191207A

WO2012081403A1
WO2013188380A1

Taketo Okuma

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