Damage Detection of CFRP Stiffened Panels by Using Cross-Correlated Spatially Shifted Distributed Strain Sensors

Ciminello, Monica; Boffa, Natalino Daniele; Concilio, Antonio; Galasso, Bernardino; Romano, Fulvio; Monaco, Ernesto

doi:10.3390/app10082662

Cited by 5 publications

(6 citation statements)

References 25 publications

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“…Several studies have investigated debonding and delamination in stiffened composite panels for aerospace applications in a damage tolerance scenario with DOFSs [ 59 , 60 ] and FBGs [ 61 ], considering damage sizes in the 40–80 mm range. In this study, it is shown that in a DCB specimen, it is possible to achieve

of 5.66 mm (see Table 2 ).…”

Section: Discussionmentioning

confidence: 99%

A Model-Assisted Probability of Detection Framework for Optical Fiber Sensors

Falcetelli

Yue

Rossi³

et al. 2023

Sensors

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Optical fiber sensors (OFSs) represent an efficient sensing solution in various structural health monitoring (SHM) applications. However, a well-defined methodology is still missing to quantify their damage detection performance, preventing their certification and full deployment in SHM. In a recent study, the authors proposed an experimental methodology to qualify distributed OFSs using the concept of probability of detection (POD). Nevertheless, POD curves require considerable testing, which is often not feasible. This study takes a step forward, presenting a model-assisted POD (MAPOD) approach for the first time applied to distributed OFSs (DOFSs). The new MAPOD framework applied to DOFSs is validated through previous experimental results, considering the mode I delamination monitoring of a double-cantilever beam (DCB) specimen under quasi-static loading conditions. The results show how strain transfer, loading conditions, human factors, interrogator resolution, and noise can alter the damage detection capabilities of DOFSs. This MAPOD approach represents a tool to study the effects of varying environmental and operational conditions on SHM systems based on DOFSs and for the design optimization of the monitoring system.

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of 5.66 mm (see Table 2 ).…”

Section: Discussionmentioning

confidence: 99%

A Model-Assisted Probability of Detection Framework for Optical Fiber Sensors

Falcetelli

Yue

Rossi³

et al. 2023

Sensors

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“…The goal of this study is to use the recently adopted VCCT based approach in the FE Code ABAQUS to analyze the delamination growth behaviour of a composite single-stringer specimen subjected to cyclic stress in the postbuckling regime. In this investigation, the behaviour of large multi-stringer panels, such as those present in aircraft fuselage constructions, is mimicked using a Single-Stringer Compression (SSC) specimen that was created and validated in [27]. The coupon specimen level of the building block approach commonly used for aerospace composite constructions and the large multi-stringer stiffened panel level both accommodate the specimen.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determination of the fatigue behavior of the composite Single-Stringer structure based on the quasi-static method

Shomran

Faisal

Hussein

et al. 2023

EEJET

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In this investigation, the Mechanical Behavior of the composite Single-Stringer structure was subjected to numerical analysis in order to better understand its properties. As the primary material for the modeling process, the carbon-epoxy IM7/8552 with quasi-isotropic Layups has been utilized. The outcomes of the numerical analysis that were carried out on the structure while it was in its static state have been put into the structural tool that was developed by the ANSYS programme. The fundamental boundary conditions have been defined on the basis of the information that was received from the testing. Static forces with a combined magnitude of 13.7 kN are being applied to the composite Single-Stringer structure. Shear stresses, direction deformation, von mises stresses, and total deformation have all been shown to have an effect on a material's mechanical behaviour, and this effect has been demonstrated. The calculations indicate that there is a maximum amount of bending that can take place as a direct result of the load that is being applied, and that amount is equal to 0.0147. The maximum amount of bending that can take place as a direct result of the load that is being applied is equal to 0.0147. As a consequence of the application of 13.7 kN of pressure, the von Mises stress, which is also frequently referred to as comparable stresses, has reached 51.9 MPa. Shear stresses have been estimated in three distinct plans, and it was discovered that the shear stress that was applied to the XY plane achieved a maximum of 15 MPa, but the shear stress that was applied to the XZ plane reached a maximum of 9.8 MPa. This was found. Both aeroplanes were put through precisely the same amount of tension at the exact same time. At this time, the shear stress on the plane YZ has reached a level of 1.5 MPa.

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“…2020, 4, x 6 of 34 strains follow the stiffness degradation trend where damage mechanism occurred; such a strain rate allowed for detecting the specimen onset failure. Another paper [46] presents a cross-correlation function-based method applied for a skinstringer debonding detection and length estimation. The proposed methodology is applied to strains follow the stiffness degradation trend where damage mechanism occurred; such a strain rate allowed for detecting the specimen onset failure.…”

Section: Fbgs Applicationmentioning

confidence: 99%

“…The proposed methodology is applied to strains follow the stiffness degradation trend where damage mechanism occurred; such a strain rate allowed for detecting the specimen onset failure. Another paper [46] presents a cross-correlation function-based method applied for a skinstringer debonding detection and length estimation. The proposed methodology is applied to Another paper [46] presents a cross-correlation function-based method applied for a skin-stringer debonding detection and length estimation.…”

Section: Fbgs Applicationmentioning

confidence: 99%

Strain State Detection in Composite Structures: Review and New Challenges

Arena

Viscardi

2020

J. Compos. Sci.

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Developing an advanced monitoring system for strain measurements on structural components represents a significant task, both in relation to testing of in-service parameters and early identification of structural problems. This paper aims to provide a state-of-the-art review on strain detection techniques in composite structures. The review represented a good opportunity for direct comparison of different novel strain measurement techniques. Fibers Bragg grating (FBG) was discussed as well as non-contact techniques together with semiconductor strain gauges (SGs), specifically infrared (IR) thermography and the digital image correlation (DIC) applied in order to detect strain and failure growth during the tests. The challenges of the research community are finally discussed by opening the current scenario to new objectives and industrial applications.

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Damage Detection of CFRP Stiffened Panels by Using Cross-Correlated Spatially Shifted Distributed Strain Sensors

Cited by 5 publications

References 25 publications

A Model-Assisted Probability of Detection Framework for Optical Fiber Sensors

A Model-Assisted Probability of Detection Framework for Optical Fiber Sensors

Determination of the fatigue behavior of the composite Single-Stringer structure based on the quasi-static method

Strain State Detection in Composite Structures: Review and New Challenges

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