Title:
PHASE CHANGE MONITORING METHOD AND DEVICE FOR MATERIAL USING OPTICAL FIBER
Document Type and Number:
Japanese Patent JP2019191061
Kind Code:
A
Abstract:
To provide a method and device capable of monitoring a phase change in a material at low cost without damaging the observed object.SOLUTION: The method includes a step for burying the tip of an optical fiber sensor through which the light that has been guided in the optical fiber for the transmission path enters the optical fiber for the receiving path and is guided in the observed substance by at least two reflections other than the total reflections at the tip to which each end of the transmission path and the light receiving path using an optical fiber is provided in parallel; a step for measuring the initial amount of the light received in the initial state of the substance; and a step for measuring the variation end time and steady amount of light received in which the amount of light received is in a steady state, and monitors the phase change in the observed material from the variation start time, the variation end time, and the steady light receiving amount.SELECTED DRAWING: Figure 2
Inventors:
AKUTAGAWA SHINICHI
Application Number:
JP2018085808A
Publication Date:
October 31, 2019
Filing Date:
April 26, 2018
Export Citation:
Assignee:
UNIV KOBE
International Classes:
G01N21/552; G01N21/41
Domestic Patent References:
| JP2013007680A | 2013-01-10 | |||
| JPS62184315A | 1987-08-12 | |||
| JPS62160352U | 1987-10-12 | |||
| JPS61105446A | 1986-05-23 |
Foreign References:
| US4904080A | 1990-02-27 |
Other References:
村越堅、芥川真一: "光の屈折率の違いを利用した光ファイバーセンシング手法に関する基礎的研究", 土木学会年次学術講演会講演概要集（ＣＤ−ＲＯＭ）, vol. 第７２回, JPN6022003154, 1 August 2017 (2017-08-01), pages 73 - 74, ISSN: 0004693450
Attorney, Agent or Firm:
Global intellectual property corporation