scholarly journals 3D Printable Piezoelectric Composite Sensors for Guided Ultrasonic Wave Detection

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Thomas Roloff ◽  
Rytis Mitkus ◽  
Jann Niklas Lion ◽  
Michael Sinapius
Keyword(s):  
Ultrasonic Wave ◽  
Lead Zirconate Titanate ◽  
Uv Light ◽  
Analytical Calculation ◽  
Lead Zirconate ◽  
Piezoelectric Composite ◽  
Adhesively Bonded ◽  
Wave Propagation Direction ◽  
Micrometer Size ◽  
Minimum Amplitude

Commercially available photopolymer resin is combined with Lead Zirconate Titanate (PZT) micrometer size piezoelectric particles to form 3D printable suspensions that solidify under UV light. This in turn allows achieving various non-standard sensor geometries that might bring benefits, such as increased piezoelectric output in specific conditions. However, it is unclear whether piezoelectric composite materials are suitable for Guided Ultrasonic Wave (GUW) detection, which is crucial for Structural Health Monitoring (SHM) in different applications. In this study, thin piezoelectric composite sensors are tape casted, solidified under UV light, covered with electrodes, polarized in a high electric field and adhesively bonded onto a wave guide. This approach helps to understand the capabilities of thin piezoelectric composite sensors for GUW detection. In an experimental study, thin 2-dimensional rectangular, circular and annulus segment shaped piezoelectric composite sensors with an effective surface area smaller than 400 mm2 applied to an aluminum plate with a thickness of 2 mm demonstrate successful detection of GUW up to 250 kHz. An analytical calculation of the maximum and minimum amplitude for the ratio of the wavelength and the sensor length in wave propagation direction shows good agreement with the sensor-recorded amplitude. The output of the piezoelectric composite sensors is compared to commercial piezoelectric discs to evaluate their performance.

A Novel Method to Attenuate Protein Adsorption Using Combinations of Polyethylene Glycol (PEG) Grafts and Piezoelectric Actuation

2010 ◽  
Vol 1 (4) ◽  
Author(s):  
Po-Ying Yeh ◽  
Jayachandran N. Kizhakkedathu ◽  
Mu Chiao
Keyword(s):  
Polyethylene Glycol ◽  
Protein Adsorption ◽  
Lead Zirconate Titanate ◽  
Photoelectron Spectroscopy ◽  
Theoretical Calculations ◽  
Lead Zirconate ◽  
Piezoelectric Composite ◽  
Coated Surfaces ◽  
Bsa Adsorption

An antifouling treatment based on the combined effects of grafted polyethylene glycol (PEG) polymers and the application of vibration is reported. A gold-coated lead zirconate titanate piezoelectric composite was grafted with PEG used as a model substrate. The PEG grafted surfaces were thoroughly characterized by attenuated total reflectance-Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. In vitro protein adsorption onto PEG coated surfaces was studied with and without the application of vibration. Bovine serum albumin (BSA) adsorption onto PEG grafted surfaces followed a similar pattern as reported in literature. However, when piezoelectric vibration was applied on the PEG grafted surface, BSA desorption was observed. At very low graft densities, the vibration significantly reduced the BSA adsorption compared with high PEG graft densities. Theoretical calculations showed that the thickness of PEG layer on the surface was affecting vibration induced protein desorption.

Lead zirconate titanate aerogel piezoelectric composite designed with biomimetic shell structure for underwater acoustic transducers

2021 ◽  
Author(s):  
Xin Long ◽  
Xiongbang Wei ◽  
Yuhong Qiu ◽  
Ming Jiang ◽  
Zhi Chen ◽  
...  
Keyword(s):  
Lead Zirconate Titanate ◽  
Shell Structure ◽  
Raw Materials ◽  
Composite Coatings ◽  
Sol Gel ◽  
Lead Zirconate ◽  
Piezoelectric Composite ◽  
Gel Method ◽  
Acoustic Transducers ◽  
Zirconate Titanate

In this research, we used lead zirconate titanate (PZT) aerogels prepared by solvothermal assisted sol-gel method as raw materials, and prepared PZT aerogel/PVDF composite coatings and PZT aerogel sintered sheets...

scholarly journals Mechanical properties and connectivity evaluation of a conductive coated piezoceramic/polymer composite

2014 ◽  
Vol 04 (03) ◽  
pp. 1450019 ◽  
Author(s):  
Gilberto de Campos Fuzari ◽  
Walter Katsumi Sakamoto
Keyword(s):  
Lead Zirconate Titanate ◽  
Polyvinylidene Fluoride ◽  
Volume Fraction ◽  
Composite Films ◽  
Lead Zirconate ◽  
Mechanical Tests ◽  
Piezoelectric Composite ◽  
Mechanical Resistance ◽  
Dielectric Measurements ◽  
Pvdf Matrix

In the present work, piezoelectric composite films made of Polyaniline (PAni) coated Lead Zirconate Titanate (PZT) particles immersed into polyvinylidene fluoride (PVDF) matrix were characterized by mechanical tests, and the connectivity of the composite sample was determined using dielectric measurements and applying the Poon–Shin model. The composite was considered a binary system with coated PZT particles as one phase and the polymer matrix the other one. To support the result obtained from theoretical analysis, scanning electron microscopy of the composites were done. It was observed a decrease up to 85% on the mechanical resistance when the ceramic volume fraction increases from 0% to 40%. Furthermore, the composite film no longer can be considered with 0–3 connectivity when the ceramic content is 30 vol.% or over.

scholarly journals Magnetodielectric properties of ferrite-piezoelectric composite materials.

2021 ◽  
Vol 2021 (10) ◽  
Author(s):  
Yu.A. Lupitskaya ◽  
◽  
E.M. Filonenko ◽  
P.E. Romazev ◽  
◽  
...  
Keyword(s):  
Composite Materials ◽  
Lead Zirconate Titanate ◽  
Ceramic Composite ◽  
Lead Zirconate ◽  
Piezoelectric Composite ◽  
Entire Concentration Range ◽  
Physicochemical Methods ◽  
System 1 ◽  
Different Content ◽  
Frequency Dependences

Ceramic composite materials based on compounds of lead zirconate-titanate and cobalt ferrite with different content of the initial components mass fraction have been synthesized. Using a complex of physicochemical methods, the microstructure and magnetodielectric properties of the synthesized ceramics have been studied. The resulting frequency dependences of the magneto-dielectric coefficient for the composite system (1-x)PZT + xCF(0.0 ≤ x ≤ 0.5) in an external magnetic field have a resonance form in the entire concentration range investigated. The largest changes in the value of the complex permittivity are observed for the sample with the composition of 0.6PZT + 0.4CF.

scholarly journals Wearable Shoe-Mounted Piezoelectric Energy Harvester for a Self-Powered Wireless Communication System

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 237
Author(s):  
Se Yeong Jeong ◽  
Liang Liang Xu ◽  
Chul Hee Ryu ◽  
Anuruddh Kumar ◽  
Seong Do Hong ◽  
...  
Keyword(s):  
Wireless Communication ◽  
Lead Zirconate Titanate ◽  
Communication System ◽  
Energy Harvester ◽  
Uv Light ◽  
Lead Zirconate ◽  
Wireless Communication System ◽  
Wireless Transmitter ◽  
Piezoelectric Energy ◽  
Self Powered

This study covers a self-powered wireless communication system that is powered using a piezoelectric energy harvester (PEH) in a shoe. The lead-zirconate-titanate (PZT) ceramic of the PEH was coated with UV resin, which (after curing under UV light) allowed it to withstand periodic pressure. The PEH was designed with a simple structure and placed under the sole of a shoe. The durability of the PEH was tested using a pushing tester and its applicability in shoes was examined. With periodic compression of 60 kg, the PEH produced 52 μW of energy at 280 kΩ. The energy generated by the PEH was used to power a wireless transmitter. A step-down converter with an under-voltage lockout function was used to gather enough energy to operate the wireless transmitter. The transmitter can be operated initially after walking 24 steps. After the transmitter has been activated, it can be operated again after 8 steps. Because a control center receives signals from the transmitter, it is possible to check the status of workers who work outside at night or mostly alone, to detect emergencies.

Smart thin-film piezoelectric composite sensors based on high lead zirconate titanate content

2014 ◽  
Vol 14 (3) ◽  
pp. 214-227 ◽  
Author(s):  
Nasser Saber ◽  
Qingshi Meng ◽  
Hung-Yao Hsu ◽  
Sang-Heon Lee ◽  
Hsu-Chiang Kuan ◽  
...  
Keyword(s):  
Thin Film ◽  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Piezoelectric Composite ◽  
Zirconate Titanate ◽  
High Lead

Piezoelectric Composite Panels for Underwater Acoustic Control

1995 ◽  
Author(s):  
Richard L. Gentilman ◽  
Leslie J. Bowen ◽  
Robert D. Corsaro ◽  
Brian H. Houston
Keyword(s):  
Lead Zirconate Titanate ◽  
Active Surface ◽  
Lead Zirconate ◽  
Piezoelectric Composite ◽  
Naval Research ◽  
Large Area ◽  
Sensor Actuator ◽  
Surface Control ◽  
Acoustic Control ◽  
Good Agreement

Abstract Large area 1–3 composite piezoelectric transducer panels have been produced by Materials Systems Inc. (MSI). These SonoPanels™ measure 250 × 250 mm and have excellent response as underwater actuators as well as sensors. Piezocomposite panel manufacturing has been facilitated by an injection molding technology for fabricating net-shape lead zirconate titanate (PZT) ceramic preforms. An array of fifteen 250 × 250 mm 1–3 composite actuator panels, integrated with surface mounted pressure and velocity sensors, has been attached to a steel backing structure. The array has been evaluated for underwater active surface control applications at the Naval Research Laboratory. Sensor-actuator coupling was investigated, with good agreement between calculated and measured performance.

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