Development of novel piezoceramic modules for adaptive thermoplastic composite structures capable for series production

Hufenbach, W.; Gude, Μaik; Heber, Thomas

doi:10.1016/j.sna.2009.04.006

Cited by 20 publications

(15 citation statements)

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“…A variety of these approaches has been summarized by Sch€ onecker. 1 They include the fabrication of piezoelectric composites with spherical particles and fibers made of ferroelectric ceramics, 2 the serial production of polymer packages 3 and thermoplastic composite structures, 4 the direct injection of piezoelectric fibers and particles during the forming process, 5 metal die casting, 6,7 as well as ceramic packages. [8][9][10] However, the process of integration is not trivial as the integrity of the very brittle modules, electrical contacts, and wiring needs to be preserved.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mechanical Constraints in Thin Ceramic LTCC/PZT Multilayers on the Polarization Behavior of the Embedded PZT

Neumeister

Eßlinger

Gebhardt

et al. 2014

Int J Applied Ceramic Tech

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The effect of direct integration of PZT into LTCC by sintering on its polarization behavior is studied. Due to the typically small thermal expansion of PZT, compressive stresses are expected after cooling, which should promote poling. However, measurements show a strongly reduced remanent polarization compared to free PZT. Analysis of thermal expansion reveals that thermal shrinkage of the PZT is larger than that of LTCC. The impact of this finding on the poling behavior is simulated for the LTCC/PZT module, confirming the experimental observations and allowing for conclusions concerning the suitability of the PZT for integration into LTCC structures.

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Section: Introductionmentioning

confidence: 99%

Effect of Mechanical Constraints in Thin Ceramic LTCC/PZT Multilayers on the Polarization Behavior of the Embedded PZT

Neumeister

Eßlinger

Gebhardt

et al. 2014

Int J Applied Ceramic Tech

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“…Therefore thermoplastic-compatible piezoceramic modules (TPM) and dedicated manufacture and integration processes are developed, which are specially adapted for a material-homogeneous embedding of the module in the composite structure and which are suitable for a series production of functionintegrative thermoplastic composites [22][23][24]. The TPM permit the substantially coherent and homogeneous embedding in the fibrereinforced composite by a welding technology during a hot-pressing process and thus without additional bonding efforts.…”

Section: Thermoplastic-compatible Piezoceramic Modulesmentioning

confidence: 99%

Embedding versus adhesive bonding of adapted piezoceramic modules for function-integrative thermoplastic composite structures

Hufenbach

Gude

Heber

2011

Composites Science and Technology

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Against the background of an integration of piezoceramic modules into thermoplastic composite structures the development of thermoplastic-compatible piezoceramic modules (TPM) requires the consideration of the type of module-structure-connection and module position for an optimal strain transmission. While commercially available low profile transducers are applied predominantly by adhesive bonding, TPM with thermoplastic carrier films identical to the thermoplastic matrix of the composite structure offer the possibility for a material-homogeneous integration by a hot-pressing process. The aim of the presented work is to examine the influence of an adhesive layer as well as the comparison of adhesive bonding and module integration by a hot-pressing process. Therefore a common analytic model and the Finite Element Method (FEM) is used. Particular regard is given to a maximum strain transmission between the functional module and the composite structure. For pure bending as well as for pure linear expansion the studies show the advantages of a material-homogeneous integration of function modules.

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“…The associated assembly and bonding processes are characterized by several labor-extensive work steps. To successfully transform the current manual production process of active textile-reinforced thermoplastic composites into a fully automated mass production process, novel piezoelectric modules and adapted manufacturing technologies are necessary [12]. In the following studies an assembly method is presented, which is based on an automated thermal The radiation of the Lamb waves into the adjacent fluid takes place at an angle φ which results from the ratio of the wavelength in the fluid λF to the wavelength of the Lamb wave λP.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Characterization of Fiber-Reinforced Thermoplastic Composite Structures with Embedded Piezoelectric Sensor-Actuator Arrays for Ultrasonic Applications

et al. 2016

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Abstract:The paper presents preliminary numerical and experimental studies of active textile-reinforced thermoplastic composites with embedded sensor-actuator arrays. The goal of the investigations was the assessment of directional sound wave generation capability using embedded sensor-actuator arrays and developed a wave excitation procedure for ultrasound measurement tasks. The feasibility of the proposed approach was initially confirmed in numerical investigations assuming idealized mechanical and geometrical conditions. The findings were validated in real-life conditions on specimens of elementary geometry. Herein, the technological aspects of unique automated assembly of thermoplastic films containing adapted thermoplastic-compatible piezoceramic modules and conducting paths were described.

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Development of novel piezoceramic modules for adaptive thermoplastic composite structures capable for series production

Cited by 20 publications

References 1 publication

Effect of Mechanical Constraints in Thin Ceramic LTCC/PZT Multilayers on the Polarization Behavior of the Embedded PZT

Effect of Mechanical Constraints in Thin Ceramic LTCC/PZT Multilayers on the Polarization Behavior of the Embedded PZT

Embedding versus adhesive bonding of adapted piezoceramic modules for function-integrative thermoplastic composite structures

Numerical and Experimental Characterization of Fiber-Reinforced Thermoplastic Composite Structures with Embedded Piezoelectric Sensor-Actuator Arrays for Ultrasonic Applications

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