Structural health monitoring in a composite beam using magnetostrictive material through a new FE formulation

Ghosh, Debi Prasad; Gopalakrishnan, S.

doi:10.1117/12.514687

Cited by 6 publications

(3 citation statements)

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“…The numerical results coordinate actuator and sensor locations with respect to damage locations. While this is a form of embedded-NDE system, the patches themselves are not characterized to determine structural improvement or detraction of the composite laminate (Ghosh and Gopalakrishnan, 2002). Kumar and Bhattacharya (2008) present a contacting model and experimentation of magnetostrictiveembedded composite laminates with a delamination only on the external surface using an intertwined actuator/sensor.…”

Section: Introductionmentioning

confidence: 99%

Damage detection of unidirectional carbon fiber–reinforced laminates with embedded magnetostrictive particulates: A preliminary study

Myers

Currie

Rudd

et al. 2012

Journal of Intelligent Material Systems and Structures

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Defects in composite laminates are difficult to detect because of the conductive and paramagnetic properties of composite materials. Timely detection of defects in composite laminates can improve reliability. This research illustrates the preliminary analysis and detection of delaminations in carbon fiber laminate beams using a single layer of magnetostrictive particles and noncontacting concentric magnetic excitation and sensing coils. The baseline analytical models also begin to address the intrusive nature of the magnetostrictive particles as well as relate the applied excitation field with the stress and magnetic flux densities induced in the magnetostrictive layer. Numerical methods are used to begin to characterize the presence of magnetostrictive particles in the laminate and the behavior of the magnetostrictive particles in relationship to the magnetic field used during sensing. Unidirectional laminates with embedded delaminations are used for simulations and experimentations. A novel, yet simplified fabrication method is discussed to ensure consistent scanning and sensing capabilities. The nondestructive evaluation scanning experiments were conducted with various shapes and sizes of damages introduced into carbon fiber-reinforced polymeric composite structures. The results demonstrate high potential for magnetostrictive particles as a low-cost, noncontacting, and reliable sensor for nondestructive evaluation of composite materials.

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Section: Introductionmentioning

confidence: 99%

Damage detection of unidirectional carbon fiber–reinforced laminates with embedded magnetostrictive particulates: A preliminary study

Myers

Currie

Rudd

et al. 2012

Journal of Intelligent Material Systems and Structures

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“…The magnetostrictive effect causes a strain field to form when a magnetic material is exposed to a magnetic field, making it an ideal candidate for SHM. Magnetostrictive materials such as Terfenol-D [7][8][9] have been investigated as an actuator but its high magnetostrictive constant is associated with a high cost. Alternative materials such as FeSiB magnetictive ribbon actuators have been investigated and have been shown to lead to repeatable results.…”

Section: Introductionmentioning

confidence: 99%

Flat Inkjet‐Printed Copper Induction Coils for Magnetostrictive Structural Health Monitoring: A Comparison with Bulk Air Coils and an anisotropic magnetoresistive sensor (AMR) Sensor

et al. 2021

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Structural health monitoring (SHM) represents the next generation of carbon fiber‐reinforced composite nondestructive testing. One challenge facing the application of magnetostrictive SHM is the lightweighting and ease of installation of actuators and sensors. Inkjet printing (IJP) technology is well suited to produce miniaturized electronic induction sensors that can be paired with magnetostrictive actuators to detect strain. These sensors have several advantages: their thicknesses can be minimized, the surface area can be maximized to increase sensitivity, and complex multifilar coil configurations can be fabricated. A parametric study of the efficacy of IJP induction coils with different parameters (number of coils, monofilar/bifilar, size) tested on a number of actuator‐functionalized composite coupons (FeSiB ribbon and impregnated epoxy sensors) is conducted. The samples are characterized by measuring their inductance response through induced strains. Increased sensitivity and accuracy of the 10‐turn monofilar IJP sensor are shown with respect to 1) 70‐turn hand‐wound coils, 2) a three‐axis AMR sensor, and 3) other IJP actuators with <10 turns. This is attributed to increased contact area to the composite surface and the requirement of minimum sensitivity (i.e., the number of turns and surface area) for strain detection.

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“…The authors analyzed both 2D and 3D cases. In [25] the constitutive linearized equations were used for finite element modelling of magnetostrictive material. In [11] 3D finite element modelling was used.…”

Section: Modelling and Finite Element Analysismentioning

confidence: 99%

Coupled wave-equation and eddy-current model for modelling and measuring propagating stress-waves

Peussa¹,

Belahcen²

2015

Archives of Electrical Engineering

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Abstract:The coupling of the propagating stress wave with the eddy current model is presented. The applied stress produces magnetization in the sample that can be measured outside the sample by measuring the resulting magnetic flux density. The stress and flux density measurements are made on a mechanically excited steel bar. The problem is modelled with the finite element method for both the propagating wave and the eddy current. Three aspects are considered: eddy current model using magnetization from the measurements, coupled wave and eddy current models, and coupled different dimensions in the wave model. The measured stress can be reproduced from the measured flux density by modelling. The coupled models work both for stress and flux couplings as well as for the different dimensionality couplings.

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Structural health monitoring in a composite beam using magnetostrictive material through a new FE formulation

Cited by 6 publications

References 0 publications

Damage detection of unidirectional carbon fiber–reinforced laminates with embedded magnetostrictive particulates: A preliminary study

Damage detection of unidirectional carbon fiber–reinforced laminates with embedded magnetostrictive particulates: A preliminary study

Flat Inkjet‐Printed Copper Induction Coils for Magnetostrictive Structural Health Monitoring: A Comparison with Bulk Air Coils and an anisotropic magnetoresistive sensor (AMR) Sensor

Coupled wave-equation and eddy-current model for modelling and measuring propagating stress-waves

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