Magnetostrictive Materials for aerospace applications

Al-Taher, A.; Reiss, R.; Lafferty, Austin D.; Hayes, Shannon; Lupu, N.; Murgulescu, I.; Morley, N. A.

doi:10.1088/1742-6596/903/1/012010

Cited by 9 publications

(13 citation statements)

References 7 publications

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“…COMSOL Modelling From COMSOL modelling it was determined that for a spacing of 6 mm between adjacent FeSiB wires, the average induction across the surface was 0.012T, while for CoSiB wire the average induction across the surface was 0.006T. The results suggest that the FeSiB wires should have higher strain sensitivity, which is in agreement with experimental results [12]. One of the main differences between FeSiB and CoSiB wires and ribbons is the permeability, which is the change in magnetic induction with applied magnetic field, and is strongly dependant upon the magnetic hysteresis loop.…”

Section: Resultssupporting

confidence: 72%

“…For each design at least 4 different panels were made up with the actuators attached. To check for repeatability between actuators, the average inductance of each sample was measured using a 112 turn pick-up coil connected to an Atlas LCR45 analyser [12]. The average inductance for type A ribbons were measured as 3452µH (ribbons) and 259.30.5µH (wires), while for type B they were 3952µH (ribbons) and 2612µH (wires).…”

Section: Methodsmentioning

confidence: 99%

“…The uniform strain sensitivity of the magnetostrictive actuator was tested using the inductance methodology [12]. These were done by straining the composite samples over a range of known bend radii, to determine the change in inductance as a function of strain.…”

Section: Methodsmentioning

confidence: 99%

“…Their main limitations are the additional weight, along with the sensors depoling over time, such that they have a life-cycle of 5 years. Thus, new SHM techniques are being investigated, such as magnetostrictive wires [11,12] and ribbons, which can be monitored using handheld sensors, therefore reducing the weight added to the composite. This paper presents research carried out on the viability of amorphous magnetostrictive ribbons and wires as SHM actuators, via both computer simulations and experimental procedures.…”

Section: Introductionmentioning

confidence: 99%

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Structural Health Monitoring using Magnetostrictive Sensors

Leung

Al-Taher

Walters

et al. 2018

2018 IEEE International Magnetics Conference (INTERMAG)

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Polymer composites are used in a wide range of applications including aerospace and automotive. Although they possess good structural properties, they are subjected to complicated modes of failure. This damage is often barely visible, so structural health monitoring of the composite is required to determine when this barely visible damage occurs. This paper presents results on the design and testing of a magnetostrictive actuator for detecting barely visible damage in aircraft composite. Computer modelling was used to design and optimise the actuator. FeSiB ribbon and wires were used as the actuator, co-cured either onto the composite surface or between the composite layers to investigate composite sensitivity to different forms of damage. The actuators were tested for uniform strain, barely visible impact damage, and composite delamination, by measuring the change in magnetisation using a HMC5883L AMR sensor. It was found that the magnetostrictive actuator-AMR sensor together were able to detect all these forms of composite damage.

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Section: Resultssupporting

confidence: 72%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural Health Monitoring using Magnetostrictive Sensors

Leung

Al-Taher

Walters

et al. 2018

2018 IEEE International Magnetics Conference (INTERMAG)

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“…Magnetostrictive materials change their magnetisation under applied stress, which makes them ideal for detecting BVD in composites, as the damage produced induces a strain field within the composite. Early work [15,16] demonstrated that embedded magnetostrictive wires in composite could detect uniform strain [15] and that the sensitivity is comparable with other SHM systems [16]. More recent work has shown that magnetostrictive ribbons have a better sensitivity to uniform strain compared to magnetostrictive wires [17].…”

Section: Introductionmentioning

confidence: 96%

Magnetostrictive Sensors for Composite Damage Detection and Wireless Structural Health Monitoring

et al. 2019

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The efficacy of magnetostrictive ribbon actuators as aerospace composites impact damage detectors have been investigated through finite element modelling and experimental studies, investigating both the sensitivity of magnetostrictive ribbons embedded and surface mounted using tensile and 3-point bending tests. From the modelling, it was found that the surface mounted ribbons increased the Young's modulus of the system compared to the composite alone, but caused the ribbons to delaminate from the surface before failure. The embedded ribbons did not appear to affect the structural properties of the composite, which was observed through the 3-point bending tests carried out. From the impact damage tests, it was determined that the ribbons had to be embedded 2-ply below the surface to measure impact energies greater than 1.6J. For surface mounted ribbons, damages of 1.6J to the surface could be detected and pinpointed for two ribbons 10mm apart. We also demonstrate in a simple way how a two-ribbon scheme may be used to determine damage position in the tested sample, which may be extended for wireless sensing.

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