Optical fiber sensor for ultrasonic detection at high temperature
Because of the stable material property of optical fiber up to 1000℃, fiber-optic Bragg grating (FBG) sensor is considered as one of possible ultrasonic sensors used at ultrahigh temperature. However, disappearance of reflectivity of a normal FBG in the high temperature above 900℃ makes the ultrason...
| Main Authors: | , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2017-12-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/84/857/84_17-00406/_pdf/-char/en |
| _version_ | 1797989153397276672 |
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| author | Fengming YU Yoji OKABE |
| author_facet | Fengming YU Yoji OKABE |
| author_sort | Fengming YU |
| collection | DOAJ |
| description | Because of the stable material property of optical fiber up to 1000℃, fiber-optic Bragg grating (FBG) sensor is considered as one of possible ultrasonic sensors used at ultrahigh temperature. However, disappearance of reflectivity of a normal FBG in the high temperature above 900℃ makes the ultrasonic detection impossible. In order to detect ultrasonic wave under high temperature environments, we conducted an anneal heat treatment to produce a regenerated fiber Bragg grating (RFBG) sensor. Because the RFBG has a stable reflectivity even at temperature of 1000℃, we detected the ultrasonic wave successfully at the temperature. Especially, because a π-phase-shifted FBG (PSFBG) was used as the seed grating, the RFBG sensor possessed very short effective gauge length that resulted in a broad bandwidth response to ultrasonic wave over 1 MHz. Hence, we believe that the ultrasonic RFBG sensors could be potentially applied for ultrasonic detection in non-destructive tests to evaluate microscopic damage in materials under extreme high-temperature environment. |
| first_indexed | 2024-04-11T08:14:37Z |
| format | Article |
| id | doaj.art-333ef20b70b64b5ea7636c9daf3b484c |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T08:14:37Z |
| publishDate | 2017-12-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-333ef20b70b64b5ea7636c9daf3b484c2022-12-22T04:35:11ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612017-12-018485717-0040617-0040610.1299/transjsme.17-00406transjsmeOptical fiber sensor for ultrasonic detection at high temperatureFengming YU0Yoji OKABE1The University of Tokyo, Institute of Industrial ScienceThe University of Tokyo, Institute of Industrial ScienceBecause of the stable material property of optical fiber up to 1000℃, fiber-optic Bragg grating (FBG) sensor is considered as one of possible ultrasonic sensors used at ultrahigh temperature. However, disappearance of reflectivity of a normal FBG in the high temperature above 900℃ makes the ultrasonic detection impossible. In order to detect ultrasonic wave under high temperature environments, we conducted an anneal heat treatment to produce a regenerated fiber Bragg grating (RFBG) sensor. Because the RFBG has a stable reflectivity even at temperature of 1000℃, we detected the ultrasonic wave successfully at the temperature. Especially, because a π-phase-shifted FBG (PSFBG) was used as the seed grating, the RFBG sensor possessed very short effective gauge length that resulted in a broad bandwidth response to ultrasonic wave over 1 MHz. Hence, we believe that the ultrasonic RFBG sensors could be potentially applied for ultrasonic detection in non-destructive tests to evaluate microscopic damage in materials under extreme high-temperature environment.https://www.jstage.jst.go.jp/article/transjsme/84/857/84_17-00406/_pdf/-char/enregenerated fiber bragg gratinghigh tempetureultrasonic detectionnon-destructive testcomposite materials |
| spellingShingle | Fengming YU Yoji OKABE Optical fiber sensor for ultrasonic detection at high temperature Nihon Kikai Gakkai ronbunshu regenerated fiber bragg grating high tempeture ultrasonic detection non-destructive test composite materials |
| title | Optical fiber sensor for ultrasonic detection at high temperature |
| title_full | Optical fiber sensor for ultrasonic detection at high temperature |
| title_fullStr | Optical fiber sensor for ultrasonic detection at high temperature |
| title_full_unstemmed | Optical fiber sensor for ultrasonic detection at high temperature |
| title_short | Optical fiber sensor for ultrasonic detection at high temperature |
| title_sort | optical fiber sensor for ultrasonic detection at high temperature |
| topic | regenerated fiber bragg grating high tempeture ultrasonic detection non-destructive test composite materials |
| url | https://www.jstage.jst.go.jp/article/transjsme/84/857/84_17-00406/_pdf/-char/en |
| work_keys_str_mv | AT fengmingyu opticalfibersensorforultrasonicdetectionathightemperature AT yojiokabe opticalfibersensorforultrasonicdetectionathightemperature |