1Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China
2Fiber Optical Sensing Center for Excellence, Yantai Research Institute, Harbin Engineering University, Yantai 264006, Shandong, China
Ye Tian, Chao Duan, Tao Tan, Jiangzhong Zhang. Research Progress in Residual Stress Measurement Techniques Based on Fiber Bragg Grating[J]. Laser & Optoelectronics Progress, 2023, 60(11): 1106008
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High precision,mature theory,wide application,suitable for field test
The most commonly used test method in engineering
Affected by sensor layout,can only measure surface residual stress,destructive
Ring core method
China
JB/T 8888-1999
Simple operation,high precision,suitable for small scale residual stress measurement
Special annular drill bit is required,which requires high operation requirements,limited application range and is destructive
Planar method
Stress in the direction of thickness can be measured
Lack of relevant standards,the test results are unstable and destructive
Nondestructive testing
X-ray diffraction method
European Union
EN 15305-2008
China
GB/T 7704 -2017
Mature theory,high precision,wide use,macro/micro residual stress can be tested
Strict requirements on material surface,limited penetration,only can measure the superficial surface of the material,expensive equipment,large volume,not suitable for field testing
Neutron diffraction method
Can detect three-dimensional stress,high spatial resolution,large penetration depth
Construction and operation costs are extremely high,neutron sources are required,radiation is high,and surface residual stress cannot be detected
Ultrasonic method
The equipment is portable,easy to operate and can measure residual stress on the surface and inside
Due to the influence of material microstructure,the measurement accuracy is low,and only the average stress along the measurement path can be obtained
Magnetic detection method
High sensitivity,large detection depth
Only applicable to ferromagnetic materials,will produce magnetic pollution
Nanoindentation method
Small area detection can be realized
The theory is not mature and the residual stress results of different models differ greatly
Embedded sensor method
Full cycle on-line monitoring of composite/additive manufacturing components can be realized
It is only applicable to some composite materials and additive manufacturing materials,and will affect the original mechanical properties of materials
Table 1. Comparison of residual stress test methods
Year
Fiber optic sensing type
Research content
Propose solution and contribution
Reference
2015
FBG
Application of FBG in residual stress measurement of plate
It is the first time to combine FBG with drilling method
[23]
2020
FBG
FBG chirp due to non-uniform strain of plate drilling
The relation function between grating spectrum parameters and layout parameters is established to chirp compensation
The test error was reduced from 10% to 2%
[24]
2022
FBG
FBG chirp due to non-uniform strain of curved structure drilling
Using the transmission matrix and genetic algorithm,the relation between grating spectral parameters and strain distribution is established,and the chirp compensation is performed
The test error was reduced from 20% to 5%
[27]
2021
FBG
Nonuniformity test of residual stress in plates
The distribution of residual stress was measured by FBG array arranged in ring
It provides a new method for the accurate measurement of residual stress in complex heterogeneous materials by drilling method
[32]
Table 2. Research progress of residual stress measurement of FBG based on drilling method
Year
Fiber optic sensing type
Type of material
Research content
Propose solution and contribution
Reference
1972
FBG
Composite plate
The change of residual stress during solidification of composite plates was measured
FBG is embedded in composite material for the first time
[34]
1996
FBG
Composite plate
The change of residual stress during solidification of composite plates was measured
FBG is embedded in composite material for the first time in our country
[35]
2009
FBG
Fiber reinforced polymer
Transfer coefficient between FBG and resin substrate
The mechanical transfer model of FBG embedded in composites is established
[36]
2010
FBG
Fiber reinforced polymer
FBG chirp problem
The FBG was prepackaged with stainless steel casing and the strain transfer model under this condition was established
[37]
2019
FBG
FDM
Additive manufacturing materials
Residual stress testing of continuous fiber reinforced thermoplastic composites made by FDM technology
For the first time,FBG was embedded into the composite material by FDM technique and in-situ residual stress monitoring was carried out
[41]
2022
FBG
FDM
Additive manufacturing materials
Measuring of residual prestress of glass fiber reinforced composite made by FDM technology
For the first time,the FBG array was embedded into the composite material by FDM technique and the residual stress was monitored in situ
[42]
2019
FBG
composites foam
Measuring of residual stress under mechanical and thermal load of composites foam
For the first time,FBG was embedded in a foamed composite material and its residual stress was measured under thermodynamic load
[44]
2019
OFDR
Fiber reinforced polymer
Residual stress of thermosetting fiber reinforced laminates was measured by OFDR
The curing kinetics of thermosetting fiber reinforced laminates was measured by OFDR
[45]
2022
OFDR
Epoxy resin and optical fiber composite material
The residual stress of fiber optic shape sensor was measured by OFDR
The residual stress of fiber optic shape sensor was measured by OFDR
[46]
Table 3. Research progress of residual stress testing technology based on embedded FBG
Ye Tian, Chao Duan, Tao Tan, Jiangzhong Zhang. Research Progress in Residual Stress Measurement Techniques Based on Fiber Bragg Grating[J]. Laser & Optoelectronics Progress, 2023, 60(11): 1106008