Lamb Waves-based Impact Damage Monitoring of a Stiffened Aircraft Panel using                 Piezoelectric Transducers

Monnier, Thomas

doi:10.1177/1045389x06058630

Cited by 65 publications

(44 citation statements)

References 28 publications

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“…Lead Zirconate Titanate (PZT) ceramics can be used as sensors for in-situ health monitoring systems for structural systems, such as vibration monitoring, acoustic emission detection and impact detection [1]. Especially in aerospace fibre composite structures, such systems are important for detection of oncoming failure of the component.…”

Section: Introductionmentioning

confidence: 99%

The effect of calcining temperature on the properties of 0-3 piezoelectric composites of PZT and a liquid crystalline thermosetting polymer

2010

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We report on the optimisation of a recently developed high performance 0-3 piezoelectric composite comprising of the piezoelectric Lead Zirconate Titanate (PZT) powder and a liquid crystalline thermosetting matrix polymer (LCT). The matrix polymer is a liquid crystalline polymer comprising of an HBA-HNA backbone with phenylethynyl end-groups. The use of a high performance polymer makes the composite a possible candidate to be used in sensor applications at elevated temperatures. The composite properties were optimised by calcining the PZT powder at different temperatures, prior to mixing the powders into the LCT matrix. The aim is to study the effect of the calcining temperature on the piezoelectric properties of the composite The PZT powders were characterised by X-ray diffraction and scanning electron microscopy. The dielectric constant and piezoelectric charge constant (d 33 ) of the composite samples was measured. It was found that a relationship exists between the calcining temperature of the PZT powder and the piezoelectric properties of the composites. A maximum voltage constant of g 33 =63 mVm/N was obtained for a composite containing 40% (by volume) of PZT powder calcined at 1150°C.

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Section: Introductionmentioning

confidence: 99%

The effect of calcining temperature on the properties of 0-3 piezoelectric composites of PZT and a liquid crystalline thermosetting polymer

2010

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“…The measurements of the E/M impedance or admittance signatures are related to the mechanical impedance which is affected by the presence of damage. Lamb wave method is also suitable for structural health monitoring applications [12][13] .…”

Section: Introductionmentioning

confidence: 99%

Early damage detection in epoxy matrix using cyclobutane-based polymers

Zou

Liu

Shan

et al. 2014

Smart Mater. Struct.

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Identification of early damage in polymer composites is of great importance. We have incorporated cyclobutane-containing crosslinked polymers into an epoxy matrix, studied the effect on thermal and mechanical properties and more importantly, demonstrated early damage detection through mechanically induced fluorescence generation. Two cinnamate derivatives, 1,1,1-tris(cinnamoyloxymethyl) ethane (TCE) and poly(vinyl cinnamate) (PVCi), were photoirradiated to produce cyclobutane-containing polymer, respectively. The effects on the thermal properties and mechanical properties with the addition of cyclobutane-containing polymer into epoxy matrix were investigated. The emergence of cracks was detected by fluorescence at a strain level right beyond the yield point of the polymer blends and the fluorescence intensified with accumulation of strain. Overall, the results show that the damages can be detected through fluorescence generation along the crack propagation.

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“…Simulations of sensor multiplexing, high frequency response, and the inclusion of damage are presented in [1]. In [9] was defined an in situ and nondestructive method for the impact damage monitoring of carbon/epoxy laminated composites and the propagation of Lamb waves inside a stiffened aeronautical structure, and the definition of associated data processing systems was described. Surface-bonded piezoelectric sensors can be used to monitor the mechanical behavior of structures for damage detection.…”

Section: Diagnostics Methods Used To Assess the Airframe Structure Hementioning

confidence: 99%

SHM Supporting Damage Tolerance Design Philosophy As a Challenge for Designers of Future Airframes

Kustroń¹

2008

Journal of Konbin

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Development design pfilosophy of airframes in all the relevant technological fields is important for the evaluation of high performance airframes best to achive high level of safety and satisfy the market needs. Maintenance cost reduction, increased aircraft availability and weight saving are goals which will be reaching by SHM systems as on-line monitoring of the structure health. Irrespective of which materials will be used in the future, the current design philosophy, which is applied today by the structural designers, will be challenged by the new design philosophy based on SHM. The most efective SHM methods are based on Lamb wave techniques. Using the based on Lamb wave techniques would be cost-effective and reliable damage detection is critical for the utilization of metal, composite and hybrid materials. Multitude of diagnostics data requires to use expert systems for effective analysis.Key words: aircraft, airframe, metal and composite structure, degradation, durability, reliability, safety, damage detection, non destructive testing, structural health monitoring, piezoelectric, expert systems, artificial intelligence.Streszczenie: Rozwój efektywnych metod konstruowania płatowca warunkuje powstawanie konstrukcji o lepszych osiągach przy wysokich właściwościach eksploatacyjnych. Ważnym aspektem jest obniżenie kosztów eksploatacyjnych przy wzroście współczynnika gotowości operacyjnej i oszczędnościach masowych. Te zadania mogą zostać osiągnięte poprzez efektywne zastosowanie ciągłego monitoringu (SHM) w celu wykrywania czy określania wielkości uszkodzenia. Wyniki badań w dostępnej literaturze wskazują na wysoką efektywność metod wykorzystujących własności fal Lamba. Czujniki piezoelektryczne, które można umieszczać na strukturze jak i wprowadzać w samą strukturę podczas procesu wytwarzania elementów konstrukcyjnych płatowca wpływają na oszczędności co do kosztów a przez to, że mają wykrywać uszkodzenia lub nadzorować ich rozprzestrzenianie podwyższają niezawodność. Techniki wykorzystujące fale Lamba są efektywne w ocenie uszkodzeń struktur metalowych, kompozytowych jak i hybrydowych. Dane zbierane z czujników o ogromnej ilości muszą być oceniane przy użyciu systemów eksperckich bazujących na technikach sztucznej inteligencji.

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Lamb Waves-based Impact Damage Monitoring of a Stiffened Aircraft Panel using Piezoelectric Transducers

Cited by 65 publications

References 28 publications

The effect of calcining temperature on the properties of 0-3 piezoelectric composites of PZT and a liquid crystalline thermosetting polymer

The effect of calcining temperature on the properties of 0-3 piezoelectric composites of PZT and a liquid crystalline thermosetting polymer

Early damage detection in epoxy matrix using cyclobutane-based polymers

SHM Supporting Damage Tolerance Design Philosophy As a Challenge for Designers of Future Airframes

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