PTCa/PEKK piezo-composites for acoustic emission detection

Marin-Franch, P.; Martin, T.; Tunnicliffe, D.L.; Das-Gupta, D.K.

doi:10.1016/s0924-4247(01)00789-0

Cited by 32 publications

(17 citation statements)

References 11 publications

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“…Lee and Kuo [21] design a miniature acoustic transducer with two conical PZT elements to measure the surface wave velocity by using PZT ceramic (PZT-5H) as the sensing element. Other piezoelectric elements reported in literature for AE sensing are polyvinylidene fluoride-trifluonoethylene (PVDF-TrFE) copolymer [22], embedded polyvinylidene fluoride (PVDF) [23], PTCa/PEKK piezo-composites [24,25], piezoelectric polymer-ceramic composites [26], macro-fiber composite (MFC) film [27].…”

Section: Piezoelectric Acoustic Emission (Ae) Sensorsmentioning

confidence: 99%

Numerical approach to absolute calibration of piezoelectric acoustic emission sensors using multiphysics simulations

Zhang

Yalcinkaya

Ozevin

2017

Sensors and Actuators A: Physical

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In this paper, the absolute calibration of piezoelectric Acoustic Emission (AE) sensors is developed using multi-physics numerical and experimental models. In this process, two common excitation approaches including laser and pencil lead break (PLB) are used to generate the simulation sources because of their excellent reproducibility and well-established analytical expressions of their source functions. The numerical models include source function, steel plate and piezoelectric sensor model with the details including adhesive layer, wear plate, piezoelectric ceramic, and backing material. The experimental results of four types of AE sensors (true wideband sensor, low and high frequency conventional sensors and low frequency unpackaged sensor) are compared with the numerical results. The numerically obtained calibration curves show good agreement with the calibration curves provided by the manufacturer. The influences of adhesive layer, backing material and sensor size on the sensor response are studied. The uncoupled piezoelectric sensor models indicate that there is no single displacement history that the sensors can be used for calibration. It is shown that the quantitative AE analysis requires the coupled structural and electrical models of structural medium and piezoelectric sensor.

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Section: Piezoelectric Acoustic Emission (Ae) Sensorsmentioning

confidence: 99%

Numerical approach to absolute calibration of piezoelectric acoustic emission sensors using multiphysics simulations

Zhang

Yalcinkaya

Ozevin

2017

Sensors and Actuators A: Physical

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“…Techniques involving acoustic emission sensors consist of measuring the elastic waves produced during a mechanical event -strain or fracture -with relatively low sensitivity [53][54][55]. Though these sensors are passive, a network of these sensors can indicate the location of an "event" through triangulation.…”

Section: Piezoelectric Acoustic Emissionsmentioning

confidence: 99%

“…A traditional AE sensor consists of piezoelectric ceramic or crystal; however, composite sensors are also used. In [54], the authors suggest that piezoelectric material is not compatible with the concrete in which it is embedded and that the use of composite sensors is superior. The sensor to which they refer is a composite consisting of piezoelectric rods embedded in cement.…”

Section: Piezoelectric Acoustic Emissionsmentioning

confidence: 99%

Innovative concrete sensing technologies for nuclear power plants

Chen

2019

JCE

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Innovative concrete sensing technologies for nuclear power plantsNondestructive evaluation has been used to investigate construction and use of concrete structures for the nuclear power industry. Nuclear concrete often has unique structural characteristics which increase proclivity towards degradation and inhibit analysis and inspection using traditional nondestructive techniques. Modern embedded sensing technologies can provide opportunities for the in-depth evaluation of nuclear reinforcedconcrete structures. This paper offers an assessment of emerging embedded and surficial sensor techniques, and critically evaluates sensor applicability in the analysis of concrete structures used in the nuclear power industry. Inovativne senzorske tehnologije za beton u nuklearnim elektranamaPostupak nerazornog ispitivanja primjenjuje se za istraživanja tijekom izvođenja i uporabe betonskih konstrukcija koje se koriste za potrebe nuklearne industrije. Beton u nuklearnim elektranama često se odlikuje posebnim svojstvima koja ga čine osjetljivim na propadanje te koja onemogućuju analizu i kontrolu pomoću tradicionalnih nerazornih postupaka. Moderne tehnologije analize unutar betona omogućuju dubinsko istraživanje nuklearnih armiranobetonskih konstrukcija. U radu se analiziraju perspektivne dubinske i površinske analitičke metode te se kritički ocjenjuje primjena senzora u analizi betonskih konstrukcija koje se koriste u nuklearnoj industriji. Ključne riječi: nuklearne elektrane, beton, praćenje stanja konstrukcija, nerazorno ispitivanje, senzori Vorherige Mitteilung Innovative Sensortechnologie für Beton in Kernkraftwerken Das Werkstoffprüfverfahren wird für die Untersuchung während der Ausführung und Verwendung von Betonkonstruktionen angewendet, die für die Kernkraftindustrie verwendet werden. Der Beton in Kernkraftwerken zeichnet sich häufig durch besondere Eigenschaften aus, die ihn anfällig auf Zerfall machen, und die eine Analyse und Kontrolle mithilfe traditioneller Werkstoffprüfverfahren unmöglich machen. Moderne Technologien der Analyse innerhalb des Betons ermöglichen eine Tiefenuntersuchung der nuklearen Stahlbetonkonstruktionen. In der Abhandlung werden prospektive Tiefen-und Oberflächenanalyseverfahren analysiert und der Einsatz von Sensoren bei der Analyse von Betonkonstruktionen, die in der Kernkraftindustrie verwendet werden, wird kritisch beurteilt. Schlüsselwörter: Kernkraftwerke, Beton, kontinuierliche Überwachung der Konstruktion, Werkstoffprüfung, Sensoren

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“…Applications for these integrated sensor materials include vibration monitoring, impact detection and ultrasonic sensors for structural health monitoring [2][3][4]. State-of-the-art piezoelectric materials such as the poly-vinylidene fluoride (PVDF) polymer family and Lead Zirconate Titanate (PZT) ceramics are more difficult to integrate with the processing of fiber reinforced composites.…”

Section: Introductionmentioning

confidence: 99%

Properties of Quasi 1-3 Piezoelectric PZT-epoxy Composites Obtained by Dielectrophoresis

Ende

Bory

Groen

et al. 2010

Integrated Ferroelectrics

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The dielectric and piezoelectric properties of piezoelectric particle-epoxy polymer composites structured into 1-3 composites via dielectrophoresis during curing are reported. The dielectrophoretic alignment induces a textured microstructure in the composite, with particles forming chains in the direction of the electric field. The particles form a quasi-1-3 connectivity structure which influences the dielectric and piezoelectric properties of the composite in this direction. The maximum g 33 of the Pb(Zr,Ti)O 3 -epoxy system that was investigated was increased compared to the maximum g 33 for a 0-3 composite of the same system. Furthermore, these maximum values are achieved at a Pb(Zr,Ti)O 3 volume fraction of 0.1, which is much lower than in conventional 0-3 composites. The effect of the amplitude of the applied electric field at high volume fractions of filler on the dielectric and piezoelectric properties of the composites is discussed. Additionally, the polarisation behavior of the composites at high electric fields is discussed. The experimental data are quantitatively described by a new microstructure-based model.

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PTCa/PEKK piezo-composites for acoustic emission detection

Cited by 32 publications

References 11 publications

Numerical approach to absolute calibration of piezoelectric acoustic emission sensors using multiphysics simulations

Numerical approach to absolute calibration of piezoelectric acoustic emission sensors using multiphysics simulations

Innovative concrete sensing technologies for nuclear power plants

Properties of Quasi 1-3 Piezoelectric PZT-epoxy Composites Obtained by Dielectrophoresis

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