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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27 , No. 4

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[ Article ]
Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 4, pp. 376-382
Abbreviation: J. Korean Soc. Manuf. Technol. Eng.
ISSN: 2508-5107 (Online)
Print publication date 15 Aug 2018
Received 18 May 2018 Revised 10 Jul 2018 Accepted 27 Jul 2018
DOI: https://doi.org/10.7735/ksmte.2018.27.4.376
원전용 지지격자판의 비접촉 자동 계수 및 챔퍼검사에 관한 연구
정해균^a ; 홍준희^b^{, *} ; 정황영^b


Study on Non-contact Automatic Counting and Chamfer Inspection of Spacer Grid straps
HaeGyoon Jung^a ; Junhee Hong^b^{, *} ; Hwangyoung Jeong^b
aDepartment of Safety & Emergency Management, KHNP Central Research Institute, 70, Yuseong-daero 1312beon-gil, Yuseong-gu, Daejeon 34057, Korea
bDepartment of Mechanical Engineering, Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
Correspondence to : ^*Tel.: +82-42-821-5642 Fax: +82-42-822-5642 E-mail address: hongjh@cnu.ac.kr (Junhee Hong).



Funding Information ▼ Chungnam National University

Abstract

In this work, we investigated spacer grid straps using a strap inspection device with a laser displacement sensor. Non-contact measurement using laser displacement sensors has the advantages of high speed and automated measurement. The strap inspection device consisted of a jig, laser displacement sensor, and signal processing circuit. The variation in the output value of the strap inspection device was measured. The mid inner-strap of a spacer grid was used as the specimen. Prior to the experiment, we predicted an approximate expression for the experimental output values, and then performed the experiments to verify our predictions. In this study, we have demonstrated the possibility of counting the number of straps, and of identifying no-chamfered edges, using a strap inspection device with a laser displacement sensor.


Keywords: Spacer Grid, Strap, Counts the number of straps, Chamfer, Laser Displacement Sensor

Acknowledgments

이 연구는 2016 충남대학교 학술연구비에 의해 지원되었음.

References


1.	Ryu, B. J., KOO, K. W., 2012, Modal Analysis and Testing for a Middle Spacer Grid of a Nuclear Fuel ROD, KIEE. 61(12) 1948~1952.
2.	KEPCO NF n.d. Fuel Manufacturing <http://www.knfc.co.kr/fuel_manufacturing>.
3.	Lee, B. h., 2003, Review of the Present Status of Optical Fiber Sensors, Optical Fiber Technology, 9 57-79.
4.	Grattan, K.T.V., Sun, T., 2000, Fiber Optic Sensor Technology: An Overview, Sensors and Actuators A: Physical, 82 40-61.
5.	Kang, D. H., 2006, A Study of the Non-Contact Bill Counter using Optical Fiber Sensor, Master Thesis, ChungNam National University, Republic of Korea.
6.	Been, J. H., 2012, A Study of The Applicability of Optical Fiber Displacement Sensor Using ID Card Auto Counter, Master Thesis, ChungNam National University, Republic of Korea.
7.	Lee, J. Y., Kim, S. W., 1992, Displacement Measurement System Based on Optical Triangulation Method, KSME, 16(6) 1030~1035.
8.	Smart Sensor(ZX-L-N Series) 2008, Smart Sensor(ZX-L-N Series) User Manual, OmRon.