| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a specifying method of a corrosion spot of a structure capable of specifying highly accurately the corrosion spot of the structure, and specifying a loss factor of an optical fiber. <P>SOLUTION: In this method for specifying the corrosion spot of the structure 82 generating gaseous hydrogen h by corrosion, by storing one or a plurality of optical fibers 86, generation of the gaseous hydrogen h is detected by allowing light having the wavelength for detecting the gaseous hydrogen h generated by corrosion to enter the optical fibers 86, and when generation of the gaseous hydrogen h is detected, purge gas n is supplied into the structure 82 in a section where the gaseous hydrogen h is generated, to thereby purge the gaseous hydrogen h in the structure 82 to the outside of the structure 82, and then the change of a transmission loss generated in the optical fibers 86 is detected by allowing light having the wavelength for detecting the gaseous hydrogen hn to enter the optical fibers 86, to thereby specify a generation spot of the gaseous hydrogen hn. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
