METHOD FOR MEASURING STRESS OF MEMBER TO BE MEASURED MADE OF NONMAGNETIC MATERIAL

Title:

METHOD FOR MEASURING STRESS OF MEMBER TO BE MEASURED MADE OF NONMAGNETIC MATERIAL

Document Type and Number:

Japanese Patent JP2004317158

Kind Code:

A

Abstract:

To monitor stress changes in a long period on stress measurement on a member to be measured, a structure made of a nonmagnetic material.

A measuring plate 2 made of a magnetic body is pasted to the member to be measured 1 made of a nonmagnetic material, and distortion of the measuring plate 2 is converted into stress by a magnetostrictive method to measure stress of the member to be measured 1. Stress immediately after the measuring plate 2 is pasted to the member to be measured 1 or before the pasting is measured by a magnetostrictive method and taken as initial stress. Stress of the measuring plate 2 after load of the member to be measured 1 is changed is measured by a magnetostrictive method, and the difference between the result of stress measurement after the load of the measuring plate 2 is changed and the initial stress is taken as stress of the member to be measured 1.

Inventors:

MATSUOKA TAKASHI
FUJIOKA YASUHIRO
ODA TAKUYA
IWAGAMI AKIRA
ARITSUNE TAKESHI
YASUFUKU SEIICHI

Application Number:

JP2003107838A

Publication Date:

November 11, 2004

Filing Date:

April 11, 2003

Export Citation:

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Assignee:

CHUDEN GIJUTSU CONSULTANT KK
CHUGOKU ELECTRIC POWER

International Classes:

G01L1/00; G01L25/00; (IPC1-7): G01L1/00; G01L25/00

Attorney, Agent or Firm:

Yoshiaki Takemasa
Field saki Akira

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