材料科学与工程学报2000，Vol.18Issue(z1)：483-488,6.
Fabrication and Sensing Performance of Smart Composite Structures Using Optical Fibre Sensors
Fabrication and Sensing Performance of Smart Composite Structures Using Optical Fibre Sensors
C Y Wei 1S W James 2C C Ye 3R P Tatam 2P E lrving3
作者信息
- 1. Damage Tolerance Group, School of Industrial and Manufacturing Science
- 2. Optical Sensors Group, Centre for Photonics and Optical Eng.
- 3. School of Mech.. Eng.Cranfield University, Cranfield, Bedford MK43 OAL, UK
- 折叠
摘要
Abstract
This paper determines the performance of Fibre Bragg Grating (FBG) sensors for strain sensing applications in carbon fibre composite materials. Carbon fibre laminates in either cross-plied or quasiisotropic stacking sequences were fabricated using T300/Hexcel 914 prepregs. The FBG optical sensors were either surface attached, or embedded within laminates. The sensor orientation was aligned either parallel or transverse to the adjacent carbon fibre layers. The composite structures with integrated FBG sensors were subjected to static tensile loading. A scanning fibre Fabry-Perot filter was used to monitor the reflected Bragg wavelengths. The optical sensor embedded between two 90° carbon fibre plies shows a high sensitivity to multi-site cracking formed in the transverse plies. The embedding in 90° plies seems to change the local stress distributions and to become a source of crack initiation. Efficient stress transfer from the host materials to the sensors is dependent upon incorporation methods, the thickness of the adhesive layers, and the location of the sensors.关键词
Fibre Bragg grating sensor/Strain sensor/Smart materialsKey words
Fibre Bragg grating sensor/Strain sensor/Smart materials引用本文复制引用
C Y Wei,S W James,C C Ye,R P Tatam,P E lrving..Fabrication and Sensing Performance of Smart Composite Structures Using Optical Fibre Sensors[J].材料科学与工程学报,2000,18(z1):483-488,6.
