Electrical behavior of laminated composites with intralaminar degradation: A comprehensive micro-meso homogenization procedure

Selvakumaran, Lakshmi; Lubineau, Gilles

doi:10.1016/j.compstruct.2013.10.057

Cited by 25 publications

(23 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obtained conductivity image can then be used to assess the type and extent of local damage in the tested volume provided A c c e p t e d M a n u s c r i p t the relationships between the damage level and the (generally anisotropic) local change in conductivity are known. This task can be accomplished through the solution of an inverse problem and the required relationships have recently been reported in [37,21,38]. It follows that the outcome of the reconstruction process depends on the robustness of the system and the accuracy of the data which, in turn, rely on the quality of the interface between the electrical hardware and the structure being monitored i.e.…”

Section: Introductionmentioning

confidence: 99%

Laser-based surface preparation of composite laminates leads to improved electrodes for electrical measurements

Almuhammadi

Selvakumaran

Alfano

et al. 2015

Applied Surface Science

Self Cite

View full text Add to dashboard Cite

Laserbased surface preparation of composite laminates leads to improved electrodes for electrical measurements, Applied Surface Science (2015), http://dx.doi.org/10.1016/j.apsusc. 2015.10.086 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.Page 1 of 32 A c c e p t e d M a n u s c r i p t AbstractElectrical impedance tomography (EIT) is a low-cost, fast and effective structural health monitoring technique that can be used on carbon fiber reinforced polymers (CFRP). Electrodes are a key component of any EIT system and as such they should feature low resistivity as well as high robustness and reproducibility. Surface preparation is required prior to bonding of electrodes. Currently this task is mostly carried out by traditional sanding. However this is a time consuming procedure which can also induce damage to surface fibers and lead to spurious electrode properties. Here we propose an alternative processing technique based on the use of pulsed laser irradiation. The processing parameters that result in selective removal of the electrically insulating resin with minimum surface fiber damage are identified.A quantitative analysis of the electrical contact resistance is presented and the results are compared with those obtained using sanding.

show abstract

Section: Introductionmentioning

confidence: 99%

Laser-based surface preparation of composite laminates leads to improved electrodes for electrical measurements

Almuhammadi

Selvakumaran

Alfano

et al. 2015

Applied Surface Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…Through mesoscale homogenization the cracked ply can be equivalently represented by a homogeneous ply whose conductivity is modified by the damage indicator. The damage indicator is shown to be a function of the cracking density and is intrinsic to the damaged ply (independent of the geometric parameters of the surrounding plies) [9,10]. This is the major point that, by itself, justifies using mesoscale approaches as a reduced model for the description of transverse cracking: it is indeed valid to replace a cracked ply by an equivalent damaged ply, with reduced electrical conductivity at the mesoscale.…”

Section: Introductionmentioning

confidence: 92%

“…However for the mesoscale description to be valid, d e must be independent of {Ω ′ , Ω"} geom and this has been validated for a classical CFRP laminate with an anisotropic ratio of 27 in [9,10]. Now we check the intrinsic feature for the other families of laminates described in section marked with varying anisotropic ratios.…”

Section: Study: Validation Of Intrinsic Feature For Different Compositesmentioning

confidence: 99%

See 1 more Smart Citation

Validation of Micro-Meso Electrical Relations for Laminates with Varying Anisotropy

Selvakumaran

Lubineau

2015

AMM

Self Cite

View full text Add to dashboard Cite

Abstract. For electrical impedance tomography (EIT) to be useful in monitoring transverse cracks in composites, it is imperative to establish the relation between conductivity and cracking density. Micro to meso scale homogenization has been developed for classical carbon fiber reinforced polymer (CFRP) laminate which provides such a relationship. However, we have shown in previous studies that the detectability of transverse cracks in such CFRP, which are characterized by very anisotropic electrical properties, is poor. Then, it is better to lower the electrical anisotropy, which can be achieved by various technologies including doping the polymeric resin by conductive nanoparticles. However, the validity of mesoscale homogenization for laminates with such low anisotropy has not been tested before. Here, we show that the mesoscale damage indicator is intrinsic for composites with varying anisotropy.

show abstract

“…It is thus important to detect delamination cracking generated by an impact load to improve the reliability of composite structures. One non-destructive inspection method is the use of self-sensing technology that employs carbon fibres as sensors [1][2][3][4][5][6][7][8][9][10][11]. The self-sensing technology applies electric current to composite structures and measures the change in electrical resistance to detect damage.…”

Section: Introductionmentioning

confidence: 99%

Impact damage detection of a carbon-fibre-reinforced-polymer plate employing self-sensing time-domain reflectometry

Todoroki

Yamada

Mizutani

et al. 2015

Composite Structures

View full text Add to dashboard Cite

Electrical behavior of laminated composites with intralaminar degradation: A comprehensive micro-meso homogenization procedure

Cited by 25 publications

References 29 publications

Laser-based surface preparation of composite laminates leads to improved electrodes for electrical measurements

Laser-based surface preparation of composite laminates leads to improved electrodes for electrical measurements

Validation of Micro-Meso Electrical Relations for Laminates with Varying Anisotropy

Impact damage detection of a carbon-fibre-reinforced-polymer plate employing self-sensing time-domain reflectometry

Contact Info

Product

Resources

About