Feasibility of component state awareness of high strain rate events using fiber Bragg grating sensors

Ayers, James; Weerasooriya, Tusit; Ghoshal, Anindya; Pecora, Collin; Gunnarsson, Allan; Sanborn, Brett; Turney, Peter

doi:10.1016/j.ijimpeng.2016.10.012

Cited by 11 publications

(2 citation statements)

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“…32 Ayers et al. 33 present a study using FBG sensors under highstrain-rate loading in a Hopkinson bar experiment, in which one-dimensional (1D) and two-dimensional (2D) strain measurements were carried out, and the viability of these sensors under more complex dynamic loading was evaluated. This article describes dynamic strain measurement under explosive load on a special subway door.…”

Section: Introductionmentioning

confidence: 99%

“…31 Some FBG sensors have been tentatively applied to targets that generate high-speed strains, such as gun barrel, and the results show that FBG can accurately measure the strain in harsh environments of strong electromagnetic radiation. 32 Ayers et al 33 present a study using FBG sensors under high-strain-rate loading in a Hopkinson bar experiment, in which one-dimensional (1D) and two-dimensional (2D) strain measurements were carried out, and the viability of these sensors under more complex dynamic loading was evaluated. This article describes dynamic strain measurement under explosive load on a special subway door.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation and identification of dynamic strain on a blast door subjected to blast loading using fibre Bragg grating sensors

Xiong

Zhang

Lü

et al. 2018

International Journal of Distributed Sensor Networks

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Tunnels and subway blast doors are effective barriers to terrorist attacks and emergencies, and research into the mechanical properties of blast doors under explosive dynamic loads can improve and enhance the performance thereof. In this article, surface strain measurements on subway blast door models under dynamic load are carried out using quasi-distributed fibre Bragg grating sensors. The principle underpinning fibre Bragg grating sensing is introduced before the experiment. In the experiment, a model of an explosion-proof door was designed, and the experimental foundation pit was designed to be used to fix the explosion-proof door. Then, eight fibre Bragg grating sensors are placed at different positions on the surface of the explosion door to measure the strain at the time of explosion. Through the experiment we found that the optical fibre grating sensing system can be used under explosive loading surface strain: the strain distribution on the surface of the protective door is revealed under large dynamic strain. At the same time, the rebound effect of the protective door in the explosion was found through the strain phenomenon in double peak phenomenon. The strain distribution and rebound effect in the test results can provide a useful reference for the mechanical design of the blasting door and the strain monitoring of reinforced concrete structures under dynamic load.

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Section: Introductionmentioning

confidence: 99%