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

摘要

PROBLEM TO BE SOLVED: To monitor stress changes in a long period on stress measurement on a member to be measured, a structure made of a nonmagnetic material. SOLUTION: 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. COPYRIGHT: (C)2005,JPO&NCIPI