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Gotowe bibliografie tematyczne / D14 piezoelectric coefficient

Gotowa bibliografia na temat „D14 piezoelectric coefficient”

Autor: Grafiati

Data publikacji: 22 czerwca 2024

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Artykuły w czasopismach na temat "D14 piezoelectric coefficient":

1

Boivin, Guillaume, Pierre Bélanger i Ricardo J. Zednik. "Characterization of Pure Face-Shear Strain in Piezoelectric α-Tellurium Dioxide (α-TeO2)". Crystals 10, nr 10 (15.10.2020): 939. http://dx.doi.org/10.3390/cryst10100939.

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Paratellurite, also known as α-tellurium dioxide, is a ceramic that is primarily employed for its interesting optical properties. However, this material’s crystal structure belongs to the 422 symmetry class that allows a unique piezoelectric behavior to manifest itself: deformation in pure face-shear. This means that crystal symmetry necessitates the piezoelectric tensor to have only a single non-zero coefficient, d123 = d14: such unique behavior has the potential to enable novel gyroscopic sensors and high-precision torsional microelectromechanical systems (MEMS) actuators, as pure face-shear can be used to induce pure torsion. Although α-TeO2 is one of the few known materials belonging to this symmetry class, considerable uncertainty in its single piezoelectric coefficient exists, with the few reported literature values ranging from 6.13 to 14.58 pC/N; this large uncertainty results from the difficulty in using conventional piezoelectric characterization techniques on paratellurite, limiting measurements to indirect methods. The novel applications that would be enabled by the adoption of this extraordinary material are frustrated by this lack of confidence in the literature. We therefore leverage, for the first time, a first-principles analytical physical model with electrochemical impedance spectroscopy (EIS) to determine, directly, the lone piezoelectric coefficient d123 = d14 = 7.92 pC/N.

2

Boivin, Guillaume, Pierre Bélanger i Ricardo J. Zednik. "Torsional Piezoelectric Strain in Monocrystalline Paratellurite". Materials Science Forum 879 (listopad 2016): 637–41. http://dx.doi.org/10.4028/www.scientific.net/msf.879.637.

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Crystals of the 422 symmetry class exhibit interesting piezoelectric behavior, as their piezoelectric tensor has only a single non-zero coefficient, d123 = d14: such unique behavior has the potential to enable novel gyroscopic sensors and high-precision torsional MEMS actuators. Although alpha-phase tellurium dioxide (paratellurite, alpha-TeO2) is one of the few materials belonging to this symmetry class, this material has been primarily studied for its interesting optical properties. Indeed, a large uncertainty in the piezoelectric coefficient of paratellurite exists, with d123 measurements on single crystals ranging from 8.13 pC/N to 14.58 pC/N; this large uncertainty results from the difficulty in using conventional piezoelectric characterization techniques on paratellurite, and impedes adoption of this extraordinary material. The present study characterizes the piezoelectric behavior of this interesting material using two independent techniques, (1) a three dimensional laser Doppler interferometer system, and (2) electrochemical impedance spectroscopy (EIS). The experimental results are analyzed using numerical simulations for dynamic excitation conditions over a frequency range of 20 Hz to 200 kHz.

3

Mallah, Abdulrahman, Mourad Debbichi, Mohamed Houcine Dhaou i Bilel Bellakhdhar. "Structural, Mechanical, and Piezoelectric Properties of Janus Bidimensional Monolayers". Crystals 13, nr 1 (10.01.2023): 126. http://dx.doi.org/10.3390/cryst13010126.

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In the present work, the noncentrosymmetric 2D ternary Janus monolayers Al2XX’(X/X’ = S, Se, Te and O), Si2XX’(X/X’ = P, As, Sb and Bi), and A2PAs(A = Ge, Sn and Pb) have been studied based on first-principles calculations. We find that all the monolayers exhibit in-plane d12, and out-of-plane d13 piezoelectric coefficients due to the lack of reflection symmetry with respect to the central A atoms. Moreover, our calculations show that Al2OX(T = S, Se, Te) chalcogenide monolayers have higher absolute in-plane piezoelectric coefficients. However, the highest out-of-plane values are achieved in the Si2PBi monolayer, larger than those of some advanced piezoelectric materials, making them very promising transducer materials for lightweight and high-performance piezoelectric nanodevices.

4

Berik, Pelin, i Peter L. Bishay. "Parameter Identification of the Nonlinear Piezoelectric Shear d15 Coefficient of a Smart Composite Actuator". Actuators 10, nr 7 (19.07.2021): 168. http://dx.doi.org/10.3390/act10070168.

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The objective of this work is to characterize the nonlinear dependence of the piezoelectric d15 shear coefficient of a composite actuator on the static electric field and include this effect in finite element (FE) simulations. The Levenberg-Marquardt nonlinear least squares optimization algorithm implemented in MATLAB was applied to acquire the piezoelectric shear coefficient parameters. The nonlinear piezoelectric d15 shear constant of the composite actuator integrated with piezoceramic d15 patches was obtained to be 732 pC/N at 198 V. The experimental benchmark was simulated using a three-dimensional piezoelectric FE model by taking piezoelectric nonlinearity into consideration. The results revealed that the piezoelectric shear d15 coefficient increased nonlinearly under static applied electric fields over 0.5 kV/cm. A comparison between the generated transverse deflections of the linear and nonlinear FE models was also performed.

5

Lei, Heng, Tao Ouyang, Chaoyu He, Jin Li i Chao Tang. "Monolayer group IV monochalcogenides T-MX (M = Sn, Ge; X = S, Se) with fine piezoelectric performance and stability". Applied Physics Letters 122, nr 6 (6.02.2023): 062903. http://dx.doi.org/10.1063/5.0135704.

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Monolayer group monochalcogenides (MX; M = Sn, Ge; X = S, Se) in the orthogonal α-phase are excellent piezoelectric materials. In this study, a configuration with bonding features similar to the α-phase is proposed (T-phase) for monolayer MX using the first-principles method. Based on the modern theory of polarization, as implemented in Vienna Ab initio Simulation Package, the T-phase is determined to be an excellent piezoelectric phase for monolayer MX. The in-plane piezoelectric coefficient d11 of T-SnS is 452.3 pm/V, which is larger than that reported for most two-dimensional binary compounds in the α-phase, including α-SnSe (∼250 pm/V). The large piezoelectric coefficients of T-MX mainly stem from its distinctive puckered configuration, which make it extraordinarily flexible along the polarization direction. The study results suggest a possibility for designing high piezoelectric coefficient materials with MX, and the potential application of T-MX in the fields of energy collection and nanoelectromechanical systems needs to be analyzed in future studies.

6

Gao, Chang Yin, i Wan Quan Li. "Research on the Bending Charge Sensitivity Distribution of Piezoelectric Quartz". Applied Mechanics and Materials 48-49 (luty 2011): 980–83. http://dx.doi.org/10.4028/www.scientific.net/amm.48-49.980.

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In order to enhance measurement precision of the piezoelectric micro-actuator, by means of the transformation rule of tensor the research on the Bending Charge Sensitivity Distribution of Piezoelectric Quartz is conducted. First by the theories of elasticity and electromagnetism the torsion stress and bound charge are calculated, and the charge measured by the detection electrodes is obtained, which depend on the piezoelectric coefficient d12. Then using the transformation rule of tensor the piezoelectric coefficient d12 in the new coordinate system is calculated, and according to the unrestrained multipurpose optimization method the optimization Cut is obtained. Finally a special designed experiment is performed, and the experimental results show that the bound charge produced by the optimized Cut is about twice larger than that primitive Cut. This research on the bending charge sensitivity will provide a theoretical foundation for disposing the detection electrodes of a new piezoelectric micro-actuator

7

Altammar, Hussain, Anoop Dhingra i Nathan Salowitz. "Damage Detection Using d15 Piezoelectric Sensors in a Laminate Beam Undergoing Three-Point Bending". Actuators 8, nr 4 (29.09.2019): 70. http://dx.doi.org/10.3390/act8040070.

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A major inhibition to the widespread use of laminate structures is the inability of nondestructive testing techniques to effectively evaluate the bondline integrity. This work proposes and analyzes a bondline-integrity health monitoring approach utilizing shear-mode (d15) piezoelectric transducers. The d15 transducers were embedded in the bondlines of symmetric laminate structures to monitor and evaluate the bondline integrity using ultrasonic inspection. The d15 piezoelectric transducers made of lead zirconate titanate (PZT) enabled ultrasonic inspection of bonds by actuating and sensing antisymmetric waves in laminate structures. Design considerations, fabrication process, and experimental methods for testing a laminate specimen are presented. Designs included bondline-embedded d15 PZT piezoelectric transducers with surface-mounted transverse (d31) piezoelectric transducers for signal comparison. Defects in the bondline were created by a quasi-static three-point bending test, with results showing the ability of d15 piezoelectric transducers to detect bondline damage. Two damage indices based on Pearson correlation coefficient and normalized signal energy were implemented to evaluate the presence of damage and its severity. The experimental results demonstrate the ability of bondline-embedded d15 piezoelectric transducers to be used as actuators and sensors for ultrasonic health monitoring of bondline integrity. A comparison between surface-mounted d31 PZT and bondline-embedded d15 PZT sensors was also conducted. It was seen that signals sensed by bondline-embedded d15 PZTs showed higher distortion due to bondline defects compared with the sensed signals from the surface-mounted d31 PZT.

8

Jiang, Chao, Feifei Chen, Fapeng Yu, Shiwei Tian, Xiufeng Cheng, Shujun Zhang i Xian Zhao. "Thermal Expansion and Electro-Elastic Features of Ba2TiSi2O8 High Temperature Piezoelectric Crystal". Crystals 9, nr 1 (24.12.2018): 11. http://dx.doi.org/10.3390/cryst9010011.

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A high-quality Ba2TiSi2O8 (BTS) single crystal was grown using the Czochralski (Cz) pulling method. The thermal expansion and electro-elastic properties of BTS crystal were studied for high temperature sensor applications. The relative dielectric permittivities ε 11 T / ε 0 and ε 33 T / ε 0 were determined to be 16.3 and 11.8, while the piezoelectric coefficients d15, d31, d33 were found to be 17.8, 2.9, and 4.0 pC/N, respectively. Temperature dependence of electro-elastic properties were investigated, where the variation of elastic compliance s 55 E (= s 44 E ) was found to be <6% over temperature range of 20–700 °C. Taking advantage of the anisotropic thermal expansion, linear thermal expansion comparable to insulating alumina ceramic was achieved over temperature range up to 650 °C. The optimum crystal cut with large effective piezoelectric coefficient (>8.5 pC/N) and linear thermal expansion coefficient (8.03 ppm/°C) achieved for BTS crystal along the (47°, φ) direction (φ is arbitrary in 0–360°), together with its good temperature stability up to 650 °C, make BTS crystal a promising candidate for high temperature piezoelectric sensors.

9

Zhu, Yuankun, Xuejun Zheng, Lei Li, Yuangen Yu, Xun Liu i Jianguo Chen. "Evaluation of shear piezoelectric coefficient d15 of piezoelectric ceramics by using piezoelectric cantilever beam in dynamic resonance". Ferroelectrics 520, nr 1 (18.11.2017): 202–11. http://dx.doi.org/10.1080/00150193.2017.1388838.

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10

Gu, W. Y., W. Y. Pan i L. E. Cross. "Direct measurement of the piezoelectric shear coefficient d15 under non-resonant conditions". Materials Letters 8, nr 1-2 (kwiecień 1989): 3–5. http://dx.doi.org/10.1016/0167-577x(89)90085-2.

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Więcej źródeł

Rozprawy doktorskie na temat "D14 piezoelectric coefficient":

1

Ben, Achour Mohamed Aymen. "Etude des propriétés piézoélectriques du polymère biosourcé PLA pour la récupération d'énergie vibratoire". Electronic Thesis or Diss., Valenciennes, Université Polytechnique Hauts-de-France, 2021. http://www.theses.fr/2021UPHF0025.

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La potentialité des films PLA produits par extrusion et étirés uniaxialement par MDO à partir des grades industriels a été investiguée pour la récupération d’énergie vibratoire par effet piézoélectrique. Une technique de caractérisation du coefficient piézoélectrique plus adaptée aux films polymères a été testée et validée sur un film piézoélectrique commercial de PVDF, puis utilisée pour évaluer le coefficient piézoélectrique d14 des films PLA. Une étude physico-chimique a été menée afin de comprendre les relations entre les observables piézoélectriques des films PLA et les modifications structurales (orientation moléculaire, cristallinité et nature des phases cristallines) apportées par les conditions d’élaboration des films. Un banc de test de récupération d’énergie reposant sur l’application des déformations de traction dynamiques a été utilisé pour évaluer la capacité des PLAs à convertir des vibrations mécaniques en énergie électrique. Une comparaison avec du PVDF commercial a été réalisée. Un modèle électro-mécanique équivalent a été développé et a permis de décrire l’évolution de la puissance électrique récupérée en fonction des conditions de sollicitations mécaniques pour différents grades de PLA ainsi que pour le PVDF. Ce modèle étant validé, a été utilisé pour prédire l’effet de la variation des différents paramètres intrinsèques (qualités mécaniques et piézoélectriques des polymères) et extrinsèques (conditions de sollicitations mécaniques et adaptation d’impédance électrique). Enfin, pour de futures applications, nous avons évalué la potentialité du PLA (sous forme de film ou de textile) pour des applications comme capteur de déformation, de force dynamique et de chocs mais aussi pour l’émission et la réception ultrasonore
The potentiality of PLA films produced by extrusion and uniaxial stretching by MDO of industrial grades has been investigated for the energy harvesting by piezoelectric transformation. A piezoelectric coefficient characterization technique suitable for polymer films was tested and validated on a commercial PVDF piezoelectric film. It was then used to evaluate the d14 coefficient of PLA films. A study on the effect of structural parameters of the PLAs on their piezoelectric behaviour was carried out. An energy recovery test bench based on the application of dynamic tensile strains was used to assess the capability of PLAs to convert mechanical vibrations into electrical energy. A comparison with commercial PVDF was carried out. An equivalent electro-mechanical model was developed and made it possible to describe the evolution of power as a function of mechanical stress conditions for different grades of PLA as well as for PVDF. This model, was used to predict the effect of the variation of the various intrinsic parameters (mechanical and piezoelectric qualities of polymers) and extrinsic (characteristics of the vibratory source and electrical impedance matching). Finally, for future applications, we evaluated the potentiality of PLA (in film or textile form) for applications as a dynamic deformation, dynamic force and shock sensor and also for ultrasonic emission and reception

Streszczenia konferencji na temat "D14 piezoelectric coefficient":

1

Liu, T. Q., i C. S. Lynch. "Optimization of Relaxor Single Crystals for Bending Mode Applications". W ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33995.

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Rhombohedral relaxor single crystals are a class of materials that includes PZN-PT and PMN-PT in a certain range of compositions. This work presents an approach to predicting the physical properties of relaxor single crystals with an engineered domain state. A model based on properties of crystal variants and volume averaging indicates large piezoelectric coefficient d31 (690 pC/N) and d32 (−1670 pC/N) for the <110> cuts and a value over 4000 pC/N for d15 and the existence of d16 with a value as large as −2300 pC/N in <111> orientation cuts. The predictive capability of the approach results in a computational tool for the design of engineered domain states with properties optimized for specific applications. This has resulted in the identification of a crystal cut optimized for actuator and sensor applications that utilizes the transverse mode piezoelectric coupling coefficients (d31 and d32).

2

Ducharme, Stephen, Jack Feinberg i Ratnakar Neurgaonkar. "Electrooptic and piezoelectric measurements in photorefractive materials". W OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/oam.1986.mv6.

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We have measured the low frequency (undamped) electrooptic and piezoelectric coefficients in several photorefractive crystals using interferometric techniques. The electrooptic and piezoelectric measurements were independent of the frequency (in the range from 10 Hz to 100 kHz) and linear in the magnitude (in the range from 0.1 to 200 V/cm) of the applied electric field. The electrooptic coefficients measured in melt-grown BaTiO3 single crystals at λ = 5145 Å and at T = 23°C are r13 = 33 ± 2 pm/V and r33=124 ± 6 pm/V. The piezoelectric coefficient d13 = 57 ± 3 pm/V was measured separately. The combined Pockels coefficient r C = 84 ± 5 pm/V was measured independently and is in good agreement with the value r c ≡ r33 − (n1/n3)3r13 = 84 ± 5 pm/V computed from the above values of r13 and r33. (n1, and n3 are the ordinary and extraordinary indices of refraction, respectively, of tetragonal BaTiO3.) Similar measurements at λ = 5145 Å in Sr0.6Ba0.4Nb2O6 single crystals yield the electrooptic coefficients r13 = 55 ± 3 pm/V, r33 = 224 ± 11 pm/V, and the piezoelectric coefficient d13 = 47 ± 3 pm/V. The electrooptic and piezoelectric coefficients of LiNbO3 single crystals were also measured. As an independent check on this data, we also measured the coupling between two optical beams in these photorefractive crystals. The ratio of the measured coupling strengths for different optical polarizations agrees with theory using the electrooptic coefficients measured above.

3

Cross, L. Eric. "Materials Issues in Underwater Transducer Systems". W ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0436.

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Abstract In poled piezoelectric ceramic lead zirconate:lead titanate (PZT) compositions, the non zero components of the piezoelectric tensor are d33, d31 = d32, d15 = d24 (Bornstein, 1981). When the positive directions of the three axis in the ceramic is taken as the poling direction and a tensile stress is considered positive, d33 is a positive coefficient and d31 is negative (Jaffe, Cook, Jaffe, 1971). For the very high coupling compositions with zirconia titania ratio close to that of the morphotropic phase boundary between tetragonal an rhombohedral ferroelectric phases (Zr/Ti = 53/48) in the PZT phase diagram there is an unfortunate effect that d33 ∼ 2d31 (Setter and Cola, 1993). Thus in attempting to use monolithic PZT as a hydrostatic pressure wave sensor dh = h33 + 2d31 is unusually small. For all PZTs, the dielectric permittivity ε33 is large (Herbert, 1982) so that the hydrostatic voltage coefficient gh = dh/ε33 is now very small. For many hydrophone applications the product dhgh is often taken as a figure of merit and so monolithic PZT in spite of its very high individual coefficients is useless as a hydrostatic sensor.

4

Malakooti, Mohammad H., i Henry A. Sodano. "Electromechanical Characterization of Piezoelectric Shear Actuators". W ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/smasis2013-3303.

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Piezoelectric materials exhibit electromechanical coupling which has led to their widespread application for sensors, actuators, and energy harvesters. These materials possess anisotropic behavior with the shear coefficient have the largest electromechanical coupling coefficient. However the shear mode is difficult to measure with existing techniques and thus has not been fully capitalized upon in recent devices. Better understanding of the full shear response with respect to the driving electric field would significantly help the design of optimized piezoelectric shear devices. Here a simple and low cost direct measurement method based on digital image correlation is developed to characterize the shear response of piezoelectric materials and its nonlinear behavior as a function of external field. The piezoelectric shear coefficient (d15) of a commercial shear plate actuator is investigated in both bipolar and unipolar electric fields. Two different nonlinearities and hysteresis behaviors of the actuators were observed, and the relation between the driving field amplitude and the corresponding d15 coefficient is determined. Moreover, the measured transverse displacement of the plate actuator in simple shear condition is validated through a laser interferometry technique.

5

Altammar, Hussain, i Nathan Salowitz. "Using d15 Piezoelectric Transducers for Ultrasonic Inspection of Delamination in Laminated Structures". W ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-69157.

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Abstract A laminated beam consisted of internally embedded d15 piezoelectric transducers in a pitch-catch configuration was fabricated with artificial delamination created at the interface of aluminum layers. The severity of damage was also varied to evaluate the effectiveness of the approach to detect delamination. A five-peak tone burst signal centered at 30 kHz was supplied to piezoelectric actuators throughout the experiment to produce antisymmetric waves in the laminate specimen. It was found that the closer the delamination occurred to the d15 PZT actuator the greater the change in signal increasing the probability to be identified using antisymmetric A0 wave mode. The analysis suggests that d15 PZT actuators should be placed in regions where delamination is likely to occur in laminated structures. Also, the propagation path of delamination was successfully predicted using a set of sensor signals processed using damage index methods including Pearson correlation coefficient and root mean square deviation. Evaluation of the results indicated that embedded d15 piezoelectric transducers exclusively couple to antisymmetric guided waves and can advance signal analysis for detection of delamination with ultrasonic structural health monitoring systems.

6

Kanno, Isaku, Kenji Akama, Ryuji Yokokawa i Hidetoshi Kotera. "Shear piezoelectric coefficient d15 of c-axis oriented epitaxial Pb(Zr,Ti)O3 films". W Nanoscale Phenomena in Polar Materials. IEEE, 2011. http://dx.doi.org/10.1109/isaf.2011.6014138.

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Benjeddou, Ayech. "FREQUENCY- AND FIELD-DEPENDENT NON-LINEARITIES OF THE SHEAR STRAIN PIEZOELECTRIC COUPLING COEFFICIENT (D15) OF A POLED SOFT PIEZOCERAMIC MATERIAL (PZT PIC255)". W 10th ECCOMAS Thematic Conference on Smart Structures and Materials. Patras: Dept. of Mechanical Engineering & Aeronautics University of Patras, 2023. http://dx.doi.org/10.7712/150123.9968.473594.

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