A Unified Measurement Method for Shape Sensing of Plate Structure

Niu, Shengtao; Guo, Yanhao; Bao, Hong; Leng, Guojun

doi:10.1109/tim.2022.3227542

Cited by 6 publications

(5 citation statements)

References 29 publications

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“…Given the substantial mass of the restraint base, the antenna plate can be conceptualized as an optimal cantilever structure, aligning well with the experimental specifications. Fiber Bragg grating is widely used in aerospace fields due to its small size, lightweight, and strong electrical insulation [28]. Therefore, Beijing Xizuo FBG is used as the contact strain sensor in this experiment, which relates the change in grating per unit length to the strain, and it is shown in Figure 17.…”

Section: Experimental Calculationmentioning

confidence: 99%

“…Therefore, Beijing Xizuo FBG is used as the contact strain sensor in this experiment, which relates the change in grating per unit length to the strain, and it is shown in Figure 17. Fiber Bragg grating is widely used in aerospace fields due to its small size, lightweight, and strong electrical insulation [28]. Therefore, Beijing Xizuo FBG is used as the contact strain sensor in this experiment, which relates the change in grating per unit length to the strain, and it is shown in Figure 17.…”

Section: Experimental Calculationmentioning

confidence: 99%

“…Fiber Bragg grating is widely used in aerospace fields due to its small size, lightweight, and strong electrical insulation [ 28 ]. Therefore, Beijing Xizuo FBG is used as the contact strain sensor in this experiment, which relates the change in grating per unit length to the strain, and it is shown in Figure 17 .…”

Section: Applicationmentioning

confidence: 99%

“…Esposito et al [ 27 ] carried out deformation sensing research on a cantilever wing box with static flexural and torsional loading, and the wing box panel was partitioned into a large number of uniform rectangular elements. Niu et al [ 28 ] applied the iFEM to a small antenna panel loaded with concentrated forces with the fixed end. Li et al [ 29 ] explored the iFEM technique on a cryogenic composite tank under internal pressure, which was a cylindrical shell with a large structure size and complex form.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Discontinuous Deformation Monitoring of Smart Aerospace Structures Based on Hybrid Reconstruction Strategy and Fiber Bragg Grating

Chen,

Fan,

Bao

2024

Sensors

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A hybrid enhanced inverse finite element method (E-iFEM) is proposed for real-time intelligent sensing of discontinuous aerospace structures. The method can improve the flight performance of intelligent aircrafts by feeding back the structural shape information to the control system. Initially, the presented algorithm combines rigid kinematics with the classical iFEM to discretize the aerospace structures into elastic parts and rigid parts, which will effectively overcome structural complexity due to fluctuating bending stiffness and a special aerodynamic section. Subsequently, the rigid parts provide geometric constraints for the iFEM in the shape reconstruction method. Meanwhile, utilizing the Fiber Bragg grating (FBG) strain sensor to obtain real-time strain information ensures lightweight and anti-interference of the monitoring system. Next, the strain data and the geometric constraints are processed by the iFEM for monitoring the full-field elastic deformation of the aerospace structures. The whole procedure can be interpreted as a piecewise sensing technology. Overall, the effectiveness and reliability of the proposed method are validated by employing a comprehensive numerical simulation and experiment.

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Section: Experimental Calculationmentioning

confidence: 99%

Section: Experimental Calculationmentioning

confidence: 99%

Section: Applicationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Discontinuous Deformation Monitoring of Smart Aerospace Structures Based on Hybrid Reconstruction Strategy and Fiber Bragg Grating

Chen,

Fan,

Bao

2024

Sensors

Self Cite

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show abstract

“…These works emphasize that MM is a useful tool in the presence of uncertainties, since it is less influenced by them, although it achieves a lower reconstruction accuracy than iFEM. Other than its high accuracy, the inverse finite element method’s key strengths lie in its ability to monitor the displacement field even under unknown loading conditions and material properties [ 16 ], along with its computational speed which enables real-time applications.…”

Section: Introductionmentioning

confidence: 99%

Shape Sensing in Plate Structures through Inverse Finite Element Method Enhanced by Multi-Objective Genetic Optimization of Sensor Placement and Strain Pre-Extrapolation

Del Priore,

Lampani

2024

Sensors

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The real-time reconstruction of the displacement field of a structure from a network of in situ strain sensors is commonly referred to as “shape sensing”. The inverse finite element method (iFEM) stands out as a highly effective and promising approach to perform this task. In the current investigation, this technique is employed to monitor different plate structures experiencing flexural and torsional deformation fields. In order to reduce the number of installed sensors and obtain more accurate results, the iFEM is applied in synergy with smoothing element analysis (SEA), which allows the pre-extrapolation of the strain field over the entire structure from a limited number of measurement points. For the SEA extrapolation to be effective for a multitude of load cases, it is necessary to position the strain sensors appropriately. In this study, an innovative sensor placement strategy that relies on a multi-objective genetic algorithm (NSGA-II) is proposed. This approach aims to minimize the root mean square error of the pre-extrapolated strain field across a set of mode shapes for the examined plate structures. The optimized strain reconstruction is subsequently utilized as input for the iFEM technique. Comparisons are drawn between the displacement field reconstructions obtained using the proposed methodology and the conventional iFEM. In order to validate such methodology, two different numerical case studies, one involving a rectangular cantilevered plate and the other encompassing a square plate clamped at the edges, are investigated. For the considered case studies, the results obtained by the proposed approach reveal a significant improvement in the monitoring capabilities over the basic iFEM algorithm with the same number of sensors.

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Shape sensing of the thin-walled beam members by coupling an inverse finite element method with a refined quasi-3D zigzag beam theory

Zhao,

Guo,

Bao

2024

Thin-Walled Structures

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A Unified Measurement Method for Shape Sensing of Plate Structure

Cited by 6 publications

References 29 publications

Discontinuous Deformation Monitoring of Smart Aerospace Structures Based on Hybrid Reconstruction Strategy and Fiber Bragg Grating

Discontinuous Deformation Monitoring of Smart Aerospace Structures Based on Hybrid Reconstruction Strategy and Fiber Bragg Grating

Shape Sensing in Plate Structures through Inverse Finite Element Method Enhanced by Multi-Objective Genetic Optimization of Sensor Placement and Strain Pre-Extrapolation

Shape sensing of the thin-walled beam members by coupling an inverse finite element method with a refined quasi-3D zigzag beam theory

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