Numerical calculation of wing-bending moment with real-time strain monitoring by FBG modulation

Weifang Zhang1, Wei Wei2, Bo Jin3, Xiaobei Liang4, Meng Zhang5

1, 2, 5School of Reliability and Systems Engineering, Beihang University, Beijing, China

3, 4School of Energy and Power Engineering, Beihang University, Beijing, China

3Corresponding author


Received 9 September 2017; accepted 18 September 2017



Abstract. This paper presents an application of Structural Health Monitoring System based on Fiber Bragg Grating sensors (FBGs) dedicated to wing-bending moment. A numerical calculation of bending moment is proposed to the application of real-time wing-bending moment monitoring. With the advantage of anti-electromagnetic interference, small size and light weight, Fiber Bragg grating (FBG) sensors have been applied in structural health monitoring system (SHMS). An experiment was performed in full-scale fatigue test of an aircraft, and the wings of aircraft were subjected to specific loading conditions, and the strain data was collected by FBGs’ demodulation. The relationship matrix  between the strain and the wing-bending moment was established. It is a new approach for the wing-bending moment real-time monitoring with the simple FBG strain collection modulation.

Keywords: bending moment, strain, wing, structural health monitoring, FBG.


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Cite this article

Zhang Weifang, Wei Wei, Jin Bo, Liang Xiaobei, Zhang Meng Numerical calculation of wing‑bending moment with real‑time strain monitoring by FBG modulation. Vibroengineering PROCEDIA, Vol. 14, 2017, p. 374‑378.


© JVE International Ltd. Vibroengineering PROCEDIA. Oct 2017, Vol. 14. ISSN 2345-0533