As the temperature resistance of fiber grating improving, the potential application of the fiber grating sensor in the high temperature thermal structure field is increasingly apparent. The high temperature bonding method is one of the most simple and effective methods to apply fiber grating sensors. However, the
high temperature environment may cause various high temperature adhesive failures. The bonding properties of fiber grating sensor and ultra high temperature ceramic are studied in high temperature tensile and shear experiments, and the high temperature bonding failure mechanisms are studied by macro and micro fracture morphology observations. The results show that the bonding failure is a mixed failure mode including interface damage and cohesive failure at two temperatures 500 and 650 ℃, and mainly adhesive cohesive failure, while at 650 and 800 ℃, bonding failure is mainly interface failure. Under a thermal and mechanical load, holes in the adhesive gradually develop to the crack weakening tensile strength, and simple high temperature heat treatment can improve the bonding performance.
DU Chong, PENG Tao, HUO Shi-yu, XIE Wei-hua, MENG Song-he
. Experiment of Failure Mechanism of High Temperature Bonded Fiber Grating Sensor[J]. Journal of Shanghai University, 2013
, 19(6)
: 551
-555
.
DOI: 10.3969/j.issn.1007-2861.2013.06.001
[1] Latini V, Striano V, Monteverde F, et al. DEDALO: application of structural health monitoring systems on UHTC structures [J]. The Open Aerospace Engineering Journal, 2010, 3(2): 32-40.
[2] 韩杰才, 胡平, 张幸红, 等. 超高温材料的研究进展 [J]. 固体火箭技术, 2005, 28(4): 289-294.
[3] Hill K O, Meltz G. Fiber Bragg grating technology fundamentals and overview [J]. Journal of Lightwave Technology, 1997, 15(8): 1263-1276.
[4] Rao Y J. In-fibre Bragg grating sensors [J]. Meas Sci Technol, 1997(8): 355-375.
[5] Rao Y J. Recent progress in applications of in-fibre Bragg grating sensors [J]. Optics and Lasers in Engineering, 1999, 31(4): 297-324.
[6] 江超, 胡兆炜, 贾学珉. 高温光纤温度传感器的研究进展 [J]. 传感器与微系统, 2008, 27(10): 1-4.
[7] Zhang B W, Mojtaba K. High-temperature resistance fiber Bragg grating temperature sensor fabrication [J]. IEEE Sensors Journal, 2007, 7(4): 586-591.
[8] M´ endez A, Wnuk V P, Fokine M, et al. Packaging process of fiber Bragg grating strain sensors for use in high-temperature applications [C]//Proceedings of the SPIE. 2005: 111-117.
[9] Fielder R S, Stinson-Bagby K L, Palmer M. State of the art in high-temperature fiber optic sensors [C]//Proceedings of the SPIE. 2004: 60-69.
[10] Piazza A. Application of high-temperature extrinsic Fabry-Perot interferometer strain sensor [C]// NASA Dryden Flight Research Center Aeronautic Sensors Working Group. 2008: 1-13.
[11] Glass D E, Merski N R, Glass C E. Airframe research and technology for hypersonic airbreathing vehicles [J]//AIAA Paper, 2002, 5137: 1-10.
[12] Du C, Xie W H, Meng S H. The connection technology based on high temperature silica fiber optic sensor [C]//Proceedings of the SPIE. 2012, doi: 10.1117/12.917084.
