Numerical modelling of resistance changes in symmetric CFRP composite under the influence of structure damage

Pyrzanowski, Paweł; Olzak, M.

doi:10.1016/j.compscitech.2013.08.023

Cited by 9 publications

(5 citation statements)

References 11 publications

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“…However, a relatively small number of electrodes combined with a simple, low-cost algorithm can be an interesting alternative to the currently used methods. The approximation (10) adopted in the model is correct if the distance between the damage and the electrode is greater than the size of the damage. As a consequence, the area close to the electrodes was excluded from the study.…”

Section: Discussionmentioning

confidence: 99%

“…𝛽 is the angle corresponding to the damage orientation in the coating coordinate system and it is used in Section 2.6. The set of equations ( 12)-( 14) was determined using Ohm's law and ( 6), ( 9) and (10).…”

Section: Mathematical Model Of Single Damage In a Uniform Potential F...mentioning

confidence: 99%

“…However, when the entire high conductance structure is tested, a low value of resistance means that small currents must be measured. Even when a four-wire resistance measurement method is used, the measurements are subject to a large error due to a very high level of noise [10]. The method is also not effective for non-conductive materials such as glass composites or dried concrete.…”

Section: Introductionmentioning

confidence: 99%

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Metrology and Measurement Systems

Stepnowski,

Janczak,

Jakubowska

et al. 2021

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The article presents the method of identifying surface damage by measuring changes in resistance in graphitebased sensing skin. The research focused on analysis of conductivity anomalies caused by surface damage. Sensitivity maps obtained with Finite Element Method (FEM) in conjunction with the analytical damage model were used to build the coating evaluation algorithm. The experiment confirmed the ability of this method to identify a single elliptical-shape damage. Eight electrodes were enough to locate the damage that covered about 0.1‰ of the examined area. The proposed algorithm can prove useful in simple applications for surface condition monitoring. It can be implemented wherever it is possible to apply a thin layer of conductor to a non-conductive surface.

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Section: Discussionmentioning

confidence: 99%

Section: Mathematical Model Of Single Damage In a Uniform Potential F...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Metrology and Measurement Systems

Stepnowski,

Janczak,

Jakubowska

et al. 2021

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“…Therefore, the through-thickness conductivity of the damaged elements was reduced following the previous work of Pyrzanowski and Olzak. 29 In the current work, relative to the electrical properties in Table 2, the electrical conductivity in the through-thickness direction was reduced by a factor of two at the interface in order to represent of the reduction of contact between the adjacent plies. The reduction factor was chosen following the authors’ previous work, 12,30 where the through thickness electrical conductivity in the damaged region of the FE model was modified iteratively until the predicted electrical resistance matched the experimental measurements.…”

Section: Methodsmentioning

confidence: 99%

Influence of low-velocity impact-induced delamination on electrical resistance in carbon fiber-reinforced composite laminates

Hart

Zhupanska

2018

Journal of Composite Materials

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In this paper, experiments have been performed and finite element models have been developed for studying the influence of low-velocity impact damage on the four-probe electrical resistance of carbon fiber-reinforced polymer matrix laminates. Sixteen-ply and 32-ply AS4/3501-6 laminates with quasi-isotropic layup were analyzed. Electrical resistance was evaluated using a four-step procedure. First, finite element models were created in Abaqus Finite Element Analysis (FEA) for simulating low-velocity impact using a quasi-static loading approach. Second, matrix rupture in the inside plies was evaluated, and delamination analysis was performed at the corresponding interfaces to determine delamination patterns. Third, four-probe electrical finite element models were developed in Abaqus FEA for specimens before and after impact using the concept of effective conducting thickness and the delamination patterns obtained from the delamination analysis. Effects of the low-velocity impact delamination on four-probe top and oblique electrical resistance were studied. Electrical resistance predictions were compared to the experimental data. Both top and oblique resistance planes were sensitive to presence of delamination with the oblique resistance measurement being more sensitive as compared to the top resistance measurement. In addition, the resistance of the 16-ply specimens was more greatly affected by the delamination compared to the 32-ply specimens. The proposed analysis can be utilized for design of carbon fiber-reinforced polymer matrix composites with optimized damage sensing capabilities.

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“…As different seasons, 3D braided composite materials have different damage in manufacture and using period. 3 As a result, 3D braided composites in-service nondestructive testing is particularly important. 4 As the main bearer aerospace materials, establishing a complete health monitoring system in its operation, continuous real-time monitoring of the development of the state of local damage is very important.…”

Section: Introductionmentioning

confidence: 99%

Damage Analysis of Three-Dimensional Braided Composite Material Using Carbon Nanotube Threads

Wan

Guo

2015

Exp Techniques

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The method of carbon nanotube thread sensors embedded in three-dimensional braided composites is proposed in this study. The optimization allocation principle of which carbon nanotube threads are embedded in three-dimensional braided composites is investigated. This study describes tensile strain sensing characteristics of carbon nanotube threads embedded in three-dimensional braided composites. The experimental results show that the method of real-time health monitoring of three-dimensional braided composites using carbon nanotube threads is feasible. It will provide the basis for construction of structural health monitoring system of three-dimensional braided composites using carbon nanotube threads.

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Numerical modelling of resistance changes in symmetric CFRP composite under the influence of structure damage

Cited by 9 publications

References 11 publications

Metrology and Measurement Systems

Metrology and Measurement Systems

Influence of low-velocity impact-induced delamination on electrical resistance in carbon fiber-reinforced composite laminates

Damage Analysis of Three-Dimensional Braided Composite Material Using Carbon Nanotube Threads

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