Full-field experimental–numerical study of mechanical static strain and stress in piezoelectric multilayer compression-type actuators

Lemosse, Didier; Pagnacco, Emmanuel

doi:10.1016/j.compstruct.2006.11.009

Cited by 7 publications

(4 citation statements)

References 19 publications

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“…2, for a 5-μm thick epoxy bond). The locations of these stress concentrations are similar to locations found in actuators with a comparable geometry [11]. These stresses lead to cracks starting in the inactive regions of the PZT, running through PZT the multilayer element.…”

Section: Resultsmentioning

confidence: 70%

Lifetime of piezoceramic multilayer actuators: Interplay of material properties and actuator design

Ende

Bos

Groen³

et al. 2008

J Electroceram

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We report an investigation into factors limiting the functional lifetime of multilayer piezoceramic actuators. The study consists of a combination of lifetime experiments by means of an accelerated lifetime test, inspection of the actuator microstructure at different stages of the accelerated lifetime test, and numerical simulation of the displacements and mechanical stresses that arise during actuator performance. During the lifetime test, both displacement and electrical properties were measured. The results show a clear correlation between the microstructure and the mechanical stresses in the actuator, giving evidence that crack initiation starts early in actuator lifetime and humidity effects accelerate degradation. The numerical simulations performed provide clues for optimization of the actuator design with respect to stress development and performance. Attention is paid to the choice of adhesive interlayer and its effect on the performance and lifetime of the actuator.

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Section: Resultsmentioning

confidence: 70%

Lifetime of piezoceramic multilayer actuators: Interplay of material properties and actuator design

Ende

Bos

Groen³

et al. 2008

J Electroceram

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show abstract

“…In the next paragraphs a short overview of these deformations and their consequences will be given. A full study, including the comparison with a numerical model, may be found in literature [7] . The low-voltage axial mode multilayer actuator considered in this study is parallelepipedic; their internal constitution is shown in Fig.…”

Section: Static Deformations Of a Compression-type Multilayer Actuatormentioning

confidence: 99%

Experimental study of unconveniant static and dynamic deformations of piezoelectric actuators

Borza

2008

SPIE Proceedings

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Piezoelectric actuators are widely used active devices able to perform static and dynamic displacements in the micrometer and submicrometer range. Both the magnitudes and the directions of these displacements and forces applied to devices acted upon must be strictly controlled. Different actuators have been studied by using speckle interferometry. The results of the study show that some actuator designs lead to unexpected shapes of the deformed actuator. As a consequence, these actuators have an unsuitable behaviour, which may consist in uncontrolled directions of the forces applied, in unconveniant deformations of the structures acted upon, or in stress concentrations which are dangereous for the actuator itself. Several holographic and shearographic speckle interferometry techniques are used throughout the study, so as to allow separate measurement of orthogonal components of the displacement maps and an estimation of their spatial derivatives. Results of other experimental investigations show deformations which are convenient and may be used in the development of sensors and actuators.

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“…Static strain and deflection are generally measured using light probes, as in [5], or strain gages, as in [6]. However use of the so-called electronic speckle pattern interferometry (ESPI) is becoming very popular for both conventional [8] and smart [9][10][11] structures. This is due in particular to the fact that the ESPI system provides more sensitive and full-range measurement possibilities than strain gages and has the advantage of being able to measure deformations and deflections of engineering structures and materials without contact.…”

Section: Introductionmentioning

confidence: 99%

Static experimentations of the piezoceramic d₁₅-shear actuation mechanism for sandwich structures with opposite or same poled patches-assembled core and composite faces

Berik

Benjeddou

2011

International Journal of Smart and Nano Materials

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Static d 15 -shear actuated smart composites consisting of glass fiber/epoxy layers sandwiching piezoceramic shear patches-assembled cores were investigated experimentally and numerically. The piezoceramic cores were formed by connecting two or three patches with the same or opposite polarization directions. For each cantilevered benchmark the shear-induced transverse tip deflection, under increasing actuation voltage, ranging from 61.5 V to 198 V, was measured by an electronic speckle pattern interferometer system. The performance of the shear actuated smart composites was characterized by their shear-induced transverse deflection per length per voltage. It was found that this performance is much better at high voltages for which the response becomes nonlinear. For verification of the experimental results the proposed benchmarks were simulated within ABAQUS ® commercial code using three-dimensional piezoelectric finite elements. The comparison of the obtained experimental and simulation results show a nonlinear dependence of the transverse deflection for voltages higher than around 92 V.

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Full-field experimental–numerical study of mechanical static strain and stress in piezoelectric multilayer compression-type actuators

Cited by 7 publications

References 19 publications

Lifetime of piezoceramic multilayer actuators: Interplay of material properties and actuator design

Lifetime of piezoceramic multilayer actuators: Interplay of material properties and actuator design

Experimental study of unconveniant static and dynamic deformations of piezoelectric actuators

Static experimentations of the piezoceramic d₁₅-shear actuation mechanism for sandwich structures with opposite or same poled patches-assembled core and composite faces

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Full-field experimental–numerical study of mechanical static strain and stress in piezoelectric multilayer compression-type actuators

Cited by 7 publications

References 19 publications

Lifetime of piezoceramic multilayer actuators: Interplay of material properties and actuator design

Lifetime of piezoceramic multilayer actuators: Interplay of material properties and actuator design

Experimental study of unconveniant static and dynamic deformations of piezoelectric actuators

Static experimentations of the piezoceramic d15-shear actuation mechanism for sandwich structures with opposite or same poled patches-assembled core and composite faces

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Product

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About

Static experimentations of the piezoceramic d₁₅-shear actuation mechanism for sandwich structures with opposite or same poled patches-assembled core and composite faces