Damage Detection in Holed Carbon Fiber Composite Laminates Using Embedded Fiber Bragg Grating Sensors Based on Strain Information
Autor: | Guoping Ding, Hao Cao, Xiaoling Gao, Wenhao Song |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
010302 applied physics
Specific modulus Damage detection Materials science Article Subject Strain (chemistry) Mechanical Engineering Physics QC1-999 02 engineering and technology Fibre-reinforced plastic 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Condensed Matter Physics 01 natural sciences Specific strength Carbon fiber composite Fiber Bragg grating Mechanics of Materials 0103 physical sciences Composite material Fbg sensor 0210 nano-technology Civil and Structural Engineering |
Zdroj: | Shock and Vibration, Vol 2020 (2020) |
ISSN: | 1875-9203 1070-9622 |
Popis: | Compared with metal materials, Carbon Fiber Reinforced Plastic (CFRP) is more excellent in performance, with high specific strength and high specific modulus. And among various CFRP structural elements, CFRP laminated plates have widespread applications. However, some indiscernible and hidden primary damage always appears on the CFRP laminated plate and will continuously evolve and expand after being loaded. This work starts with the analysis of the relationship between the changes of the strain distribution and damage expansion of CFRP laminated plates and proposes the damage recognition method of CFRP laminated plates based on strain information. Then, the CFRP laminate damage monitoring system based on Fiber Bragg Grating (FBG) sensor is established, and the CFRP laminate damage identification experiment based on FBG sensor is made to verify the accuracy of the CFRP laminate damage identification method. The results show that the maximum error between the load when the damage appears on the FBG sensor and that when the damage of CFRP laminated plates expands based on the simulated analysis does not exceed 16%. The accuracy of the damage recognition method of CFRP laminated plates is verified and the damage recognition of CFRP laminated plates and their expansion process is achieved. |
Databáze: | OpenAIRE |
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