Vibration monitoring for aircraft wing model using fiber Bragg grating array packaged by vacuum-assisted resin transfer molding

Wen Zhang; Xiaolong Liu; Wei He; Mingli Dong; Lianqing Zhu

doi:10.1117/1.OE.56.9.094102

9 September 2017 Vibration monitoring for aircraft wing model using fiber Bragg grating array packaged by vacuum-assisted resin transfer molding

Wen Zhang, Xiaolong Liu, Wei He, Mingli Dong, Lianqing Zhu

Author Affiliations +

Optical Engineering, Vol. 56, Issue 9, 094102 (September 2017). https://doi.org/10.1117/1.OE.56.9.094102

Abstract

For the improvement of monitoring accuracy, a vibration monitoring for aircraft wing model using a fiber Bragg grating (FBG) array packaged by vacuum-assisted resin transfer molding (VARTM) is proposed. The working principle of the vibration monitoring using FBG array has been explained, which can theoretically support the idea of this paper. VARTM has been explained in detail, which is suitable for not only the single FBG sensor but also the FBG array within a relatively large area. The calibration experiment has been performed using the FBG sensor packaged by VARTM. The strain sensitivity of the VARTM package is 1.35 pm/μϵ and the linearity is 0.9999. The vibration monitoring experiment has been carried out using FBG array packaged by VARTM. The measured rate of strain changes across the aluminum test board used to simulate the aircraft wing is 0.69 μϵ/mm and the linearity is 0.9931. The damping ratio is 0.16, which could be further used for system performance evaluation. Experimental results demonstrate that the vibration monitoring using FBG sensors packaged by VARTM can be efficiently used for the structural health monitoring. Given the validation and great performance, this method is quite promising for in-flight monitoring and holds great reference value in other similar engineering structures.

Citation Download Citation

Wen Zhang, Xiaolong Liu, Wei He, Mingli Dong, and Lianqing Zhu "Vibration monitoring for aircraft wing model using fiber Bragg grating array packaged by vacuum-assisted resin transfer molding," Optical Engineering 56(9), 094102 (9 September 2017). https://doi.org/10.1117/1.OE.56.9.094102

Received: 18 July 2017; Accepted: 18 August 2017; Published: 9 September 2017

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