Evaluation of electromechanical characteristics for screen printed piezoelectric sensor-based Pu/PZT composite

Nguyen, Van-Cuong; Le, Minh‐Quyen; Fimbel, Amaury; Bernadet, Sophie; Hebrard, Yoann; Mogniotte, Jean-François; Capsal, Jean‐Fabien; Cottinet, Pierre‐Jean

doi:10.1117/12.2609769

Cited by 4 publications

(4 citation statements)

References 35 publications

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“…The first one, supplied by Creative Materials (CM, 128-07 product), possesses lower viscosity, but shape fidelity and adherence to the HNBR material are also attained. The second one exhibits very high viscosity (~57,000 cps) compared to those used in classical screen printing [ 30 , 31 , 32 ]. For confidential purposes, the name of the second ink’s supplier is not shown.…”

Section: Design Strategy and Printing Processmentioning

confidence: 99%

Extrusion-Based 3D Printing of Stretchable Electronic Coating for Condition Monitoring of Suction Cups

Nguyen

Mogniotte

et al. 2022

Micromachines

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Suction cups (SCs) are used extensively by the industrial sector, particularly for a wide variety of automated material-handling applications. To enhance productivity and reduce maintenance costs, an online supervision system is essential to check the status of SCs. This paper thus proposes an innovative method for condition monitoring of SCs coated with printed electronics whose electrical resistance is supposed to be correlated with the mechanical strain. A simulation model is first examined to observe the deformation of SCs under vacuum compression, which is needed for the development of sensor coating thanks to the 3D printing process. The proposed design involves three circle-shaped sensors, two for the top and bottom bellows (whose mechanical strains are revealed to be the most significant), and one for the lip (small strain, but important stress that might provoke wear and tear in the long term). For the sake of simplicity, practical measurement is performed on 2D samples coated with two different conductive inks subjected to unidirectional tensile loading. Graphical representations together with analytical models of both linear and nonlinear piezoresistive responses allows for the characterization of the inks’ behavior under several conditions of displacement and speed inputs. After a comparison of the two inks, the most appropriate is selected as a consequence of its excellent adhesion and stretchability, which are essential criteria to meet the target field. Room temperature extrusion-based 3D printing is then investigated using a motorized 3D Hyrel printer with a syringe-extrusion modular system. Design optimization is finally carried out to enhance the surface detection of sensitive elements while minimizing the effect of electrodes. Although several issues still need to be further considered to match specifications imposed by our industrial partner, the achievement of this work is meaningful and could pave the way for a new generation of SCs integrated with smart sensing devices. The 3D printing of conductive ink directly on the cup’s curving surface is a true challenge, which has been demonstrated, for the first time, to be technically feasible throughout the additive manufacturing (AM) process.

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Section: Design Strategy and Printing Processmentioning

confidence: 99%

Extrusion-Based 3D Printing of Stretchable Electronic Coating for Condition Monitoring of Suction Cups

Nguyen

Mogniotte

et al. 2022

Micromachines

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“…The mechanical properties of the entire system are mostly determined by the characteristics of the steel-type material because the typical sensor layer is very thin compared to the underlying substrate. In our previous work [ 37 ], we investigated a four-point bending (4 PB) setup [ 38 , 39 ] that allowed us to generate consistent and uniaxial stress along the longitudinal direction of the instrumented substrate. Another advantage of this technique is the ability to directly determine the transverse piezoelectric constant ( d 31 ), which is usually found through the intermediary longitudinal constant ( d 33 ).…”

Section: Introductionmentioning

confidence: 99%

Design Rules of Bidirectional Smart Sensor Coating for Condition Monitoring of Bearings

Nguyen

Bernadet

et al. 2023

Polymers

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This paper reports a novel monitoring technique of bearings’ bidirectional load (axial and radial) based on a smart sensor coating, which is screen printed onto the surface of a cross-shaped steel substrate. To ensure the accuracy and stability of measurement as well as the durability of the printed coating, the developed prototype is built according to design rules commonly used in electronic circuits. The finite element model (FEM) is used to predict the mechanical property of the tested substrate under either unidirectional or bidirectional loads. Regarding the output voltage of the piezoelectric sensor, experimental results are revealed to be well-corelated to the numerical simulation. It is pointed out that the output signal generated from the sensor (electrode) could be particularly affected due to the capacitive parasite coming from the conductive tracks (CTs). Such a phenomenon might be reduced by printing them on the dielectric layer rather than on the piezocomposite layer. The study also investigates a highly anisotropic shape of electrodes (rectangular instead of circle), indicating that the orientation of such electrodes (axial or radial) does affect the output measurement. To sum up, the high performance of a sensor network coating depends not only on the ultimate characteristics of its own materials, but also on its structural design. Such an issue has been rarely reported on in the literature, but is nonetheless crucial to achieving reliable condition monitoring of bearings, especially for multidirectional loads—a key signature of early failure detection.

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“…Nowadays, studies on new conductive inks are very common [7][8][9][10] . Indeed, several researchers have reported on new types of conductive inks, water or solvent based, for different printing technologies, namely screen printing, 3D printing, inkjet printing, flexography [11][12][13][14][15][16] . Previous work covers several types of elements, conductive ink and their conductive properties.…”

Section: Introductionmentioning

confidence: 99%

“…Some researchers investigates the effect of the basic surface properties of the fabric, lining, on the printing accuracy and electrical performance of conductive tracks [19][20][21] . These types of conductive tracks are used in applications for example in electronic circuits, sensing devices, heated seats, anti-icing and de-icing systems, smart clothing worn on the skin, capable of collecting data in the health field 11,12 . The ink printing technologies, the quality of the conductive materials, as well as the thickness of the ink deposited on the textile substrate, are among the parameters and properties that play a very important role in multifunctional materials for printed electronics [24][25][26][27] .…”

Section: Introductionmentioning

confidence: 99%

Enhancement of a smart stretchable resistive heater textile using printed electronic coatings: towards application in automobile

Diatezo¹,

Le²,

Tonellato³

et al. 2023

Active and Passive Smart Structures and Integrated Systems XVII

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Intelligent textiles are predicted to see a surprising development in the future. The consequence of this revived interest has been the growth of automobile industry and the improvement of innovative methods for the incorporation of electrical and thermal features into textiles materials. In the present work, the development of a smart stretchable heating device integrated into a car-seat headrest has been identified as a target application. The need for smart conductive materials is becoming increasingly apparent, but they still represent a great challenge for the heating textile area, particularly in additive manufacturing. Polymer-based composites reinforced with copper and carbon powders, attractive as advanced coatings, seems to be good solutions to this issue. Such composites are now acquainted as ideal materials for electronic device engineering and fabrication, thanks to their excellent electrical and thermal conductivities while maintaining suitable mechanical compliance. For easier process and integration, an extrusion 3D printer is employed to achieve thin films coated on the surface of the textile substrate. The developed heater device consists of two principal copper electrodes (so-called power bus), and one heating resistor made of carbon composites designed in different configurations. Finite element models (FEM) are developed to predict the heating behavior of the tested fabric substrates under different pattern suggestions. Experimental measurements via a thermal camera are in consistent with the numerical solutions. It is pointed out that the design optimization based on an adequate tuning of the pattern’s parameters allows to solve inevitable matters in terms of temperature regularity and overheating effect.

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Evaluation of electromechanical characteristics for screen printed piezoelectric sensor-based Pu/PZT composite

Cited by 4 publications

References 35 publications

Extrusion-Based 3D Printing of Stretchable Electronic Coating for Condition Monitoring of Suction Cups

Extrusion-Based 3D Printing of Stretchable Electronic Coating for Condition Monitoring of Suction Cups

Design Rules of Bidirectional Smart Sensor Coating for Condition Monitoring of Bearings

Enhancement of a smart stretchable resistive heater textile using printed electronic coatings: towards application in automobile

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