| 摘要 |
PROBLEM TO BE SOLVED: To provide a noncontact-type strain/stress measuring method capable of measuring the strain or stress in static and dynamic pulling/compression directions with high accuracy, and determining each directionality thereof, or the like.SOLUTION: A strain/stress sensor 10 including an oxide-based ceramics sintered body formed by adding 0.1-3.0 atom% (preferably 0.5-1.5 atom%) of Cr to SrAlO(X=0.02-2.0), in which an emission wavelength, when irradiating excitation light fluctuates according to the intensity of a strain/stress, and a fluctuation direction of the emission wavelength is different according to the direction of the strain/stress, is installed on a structure 1. The strain/stress sensor 10 is irradiated with an exciting light 11 to undergo fluorescence emission 12, and the emission wavelength is measured by a wavelength measuring means; and emission wavelength change with respect to a reference emission wavelength, when a strain is not generated in the structure, and its direction are measured, to thereby measure the strain or the stress generated in the structure 1, and to determine its directionality. |
