Surface Structure State Perception System Based on FBG Array

Lixin Yin; Zhichao Liu; Chunhui Liu

doi:10.3788/CJL202148.2406001

Chinese Journal of Lasers, Volume. 48, Issue 24, 2406001(2021)

Surface Structure State Perception System Based on FBG Array

Lixin Yin^1,2, Zhichao Liu^1,2、*, and Chunhui Liu^1,2

Author Affiliations

¹College of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China

²Key Laboratory of Optoelectronic Measurement and Control and Optical Information Transmission Technology of Ministry of Education, Changchun University of Science and Technology, Changchun, Jilin 130022, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(12)

Fig. 1. Schematic diagram of micro-element segment before and after deformation

Download full size

Fig. 2. Schematic diagram of coordinate conversion

Download full size

Fig. 3. Surface strain distributions of structure to be tested. (a) Load is 40 N; (b) load is 100 N

Download full size

Fig. 4. Schematic diagram of overall system structure

Download full size

Fig. 5. Physical distribution diagram of experimental device

Download full size

Fig. 6. Schematic diagrams of fiber wavelength offsets at different pressure points. (a) Pressure point is at s1; (b) pressure point is at s2; (c) pressure point is at s3; (d) pressure point is at s4; (e) pressure point is at s5; (f) pressure point is at s6; (g) pressure point is at s7; (h) pressure point is at s8; (i) pressure point is at s9

Download full size

Fig. 7. Comparison and analysis diagram of actually measured strain values and simulated values

Download full size

Fig. 8. Three-dimensional surface reconstruction by MATLAB

Download full size

Fig. 9. Three-dimensional surface map after Qualify point cloud processing

Download full size

Table 1. Error analysis table when pressure point is at s2

View table

Table 1. Error analysis table when pressure point is at s2

FBG number	Deformation value /mm			Absolute errorΔ /mm	Relative errorσ /%
FBG number	ANSYS	FBG	Handyscan	Absolute errorΔ /mm	Relative errorσ /%
1	0.215	0.231	0.221	0.010	4.32
2	0.239	0.252	0.244	0.008	3.17
3	0.351	0.403	0.377	0.026	6.45
4	0.327	0.312	0.301	0.011	3.52
5	0.134	0.149	0.142	0.007	4.70
6	0.138	0.151	0.141	0.010	6.62

Table 2. Error analysis table when pressure point is at s9

View table

Table 2. Error analysis table when pressure point is at s9

FBG number	Deformation value /mm			Absolute errorΔ /mm	Relative errorσ /%
FBG number	ANSYS	FBG	Handyscan	Absolute errorΔ /mm	Relative errorσ /%
1	0.214	0.221	0.223	0.002	0.90
2	0.229	0.233	0.246	0.013	5.58
3	0.113	0.123	0.115	0.008	6.50
4	0.102	0.112	0.105	0.007	6.25
5	0.335	0.342	0.331	0.011	3.22
6	0.329	0.335	0.327	0.008	2.39

Table 3. Error analysis table when pressure point is at s7

View table

Table 3. Error analysis table when pressure point is at s7

FBG number	Deformation value /mm			Absolute errorΔ /mm	Relative errorσ /%
FBG number	ANSYS	FBG	Handyscan	Absolute errorΔ /mm	Relative errorσ /%
1	0.123	0.141	0.136	0.005	3.54
2	0.132	0.135	0.126	0.009	6.67
3	0.252	0.257	0.246	0.011	4.28
4	0.247	0.252	0.268	0.016	6.35
5	0.312	0.324	0.337	0.013	4.01
6	0.331	0.349	0.338	0.011	3.15

Tools

Get Citation

Copy Citation Text

Lixin Yin, Zhichao Liu, Chunhui Liu. Surface Structure State Perception System Based on FBG Array[J]. Chinese Journal of Lasers, 2021, 48(24): 2406001

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: fiber optics and optical communications

Received: Mar. 22, 2021

Accepted: May. 17, 2021

Published Online: Nov. 22, 2021

The Author Email: Liu Zhichao (lzc@cust.edu.cn)

DOI:10.3788/CJL202148.2406001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology