Title
Analysis of Residual Stress in Electrical Penetration Assembly Based on a Fiber Bragg Grating Sensor.
Abstract
An important factor for maintaining hermeticity of a metal-to-glass sealed electrical penetration assembly (EPA) is the residual stress in the sealing glass, which is generated during the EPA sealing process. A novel method to investigate and optimize the sealing process of EPAs, based on a fiber Bragg grating (FBG) sensor, is proposed in this research. An FBG was well bonded with sealing glass to measure the parameters of the glass during the sealing process. The temperature change during the heating process was able to be measured by Bragg wavelength shift. After the sealing glass solidified and dropped to room temperature, the residual stress was determined and the effect of temperature was minimized because the temperature before and after the sealing process was the same as room temperature. The curing temperature of the sealing glass was evaluated to specifically investigate the solidification process of the EPA. This study provides a basis for online stress and temperature monitoring of EPAs under external loads in nuclear power plants.
Year
DOI
Venue
2019
10.3390/s19010018
SENSORS
Keywords
Field
DocType
sealing process analysis,residual stress,embeddable technology,fiber Bragg grating,electrical penetration assembly
Penetration (firestop),Fiber bragg grating sensor,Composite material,Fiber Bragg grating,Analytical chemistry,Wavelength shift,Residual stress,Engineering,Curing (food preservation)
Journal
Volume
Issue
ISSN
19
1
1424-8220
Citations 
PageRank 
References 
0
0.34
1
Authors
7
Name
Order
Citations
PageRank
Zhichun Fan100.34
Xingzhong Diao200.34
Yong Zhang300.68
Malin Liu400.34
Feng Chen564.07
Zhiyong Huang600.34
He Yan700.68