Evaluation of a Piezo-Actuated Sensor for Monitoring Elastic Variations of Its Support with Impedance-Based Measurements

Tinoco, Héctor A.; Cardona, Carlos I.; Peña, Fabio M.; Gómez, Juan Pablo; Roldan-Restrepo, Samuel I.; Velasco-Mejia, Maria A.; Barco, Daniel R.

doi:10.3390/s19010184

Cited by 17 publications

(21 citation statements)

References 43 publications

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“…The past century has been characterized by rapid advances in materials development, especially in functional materials, such as piezoceramic materials. Nowadays, on one hand, piezoceramic materials have found a wide spectrum of commercial applications [1,2], such as ultrasonic measurement [3][4][5], vibration sensing and control [6][7][8], force sensing [9,10], pumping and dosing [11][12][13], ultrasonic cleaner, ultrasonic welding, energy harvesting [14,15] and imaging [16], among others. On the other hand, piezoceramic materials and devices are still being actively researched to achieve better performance with lower cost and less environmental impact [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Dynamic Cone Angle on the Atomization Performance of a Piezoceramic Vibrating Mesh Atomizer

2019

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In this paper, we find that the dynamic cone angle of a piezoceramic atomizer is linked to periodic changes in the volume of the micro-cone hole of the atomizer, and such changes affect atomization performance. Firstly, we explained the theory of the dynamic cone angle inside the vibrating mesh atomizer. Then, we analyzed the flow status of liquid in the micro-cone hole, and the one-way flow Rof the liquid is caused by the difference of diffuser and nozzle flow resistance. The volume change of the micro-cone hole and the liquid chamber can produce atomization. Furthermore, we developed the experiment to measure the atomization rate, atomization height, and the diameter of the atomized particles. The experiments reveal that the atomization rate and height are much larger when the vibrating mesh atomizer is working in the forward path than in the reverse one. The atomization rate and atomization height increase as the working voltage increases. Meanwhile, with increasing driving voltage to the piezoceramic actuator, the atomization particle size decrease and the atomized particle size distribution is more concentrated. Finally, the size of the micro-cone hole was measured using a microscope with different direct current (DC) voltages, further demonstrating the existence of the dynamic cone angle.

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Section: Introductionmentioning

confidence: 99%

Effect of the Dynamic Cone Angle on the Atomization Performance of a Piezoceramic Vibrating Mesh Atomizer

2019

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“…Active damage-detection technology using piezoelectric transducers can be further divided into the electromechanical-impedance (EMI) method [37,38] and active-sensing methods [39,40]. The EMI method involves only a single piezoceramic transducer that functions as both an actuator and a sensor [41,42]. Meanwhile, in active-sensing methods, at least one pair of transducers are needed: one functions as an actuator and the other functions as sensor [43,44].…”

Section: Piezoelectric Transducers and Active Sensing Based On Piezoementioning

confidence: 99%

Piezoceramic-Based Damage Monitoring of Concrete Structure for Underwater Blasting

Zhong

Xiong

2020

Sensors

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This paper developed a piezoelectric-transducer-based damage detection of concrete materials after blasting. Two specimens (with or without an energy-relieving structure) were subjected to a 40 m deep-underwater blasting load in an underwater-explosion vessel, and their damage was detected by a multifunctional piezoelectric-signal-monitoring and -analysis system before and after the explosion. Statistical-data analysis of the piezoelectric signals revealed four zones: crushing, fracture, damage, and safe zones. The signal energy was analyzed and calculated by wavelet-packet analysis, and the blasting-damage index was obtained after the concrete specimen was subjected to the impact load of the underwater explosion. The damage of the two specimens gradually decreased from the blast hole to the bottom of the specimen. The damage index of the specimen with the energy-relieving structure differed for the fracture area and the damage area, and the damage protection of the energy-relieving structure was prominent at the bottom of the specimen. The piezoelectric-transducer-based damage monitoring of concrete materials is sensitive to underwater blasting, and with wavelet-packet-energy analysis, it can be used for postblasting damage detection and the evaluation of concrete materials.

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“…For the third experimental test, a piezoelectric transducer was added to the base of the beam with the aim to convert the harvester to a piezo-inductive configuration. The piezoelectric transducer used is a lead zirconate titanate (PZT) SEN10293 ROHS (SparkFun Electronics, Niwot, CO, USA) that is widely applied in sensor design due to its electromechanical properties [40,41]. The transducer film was cut and attached with a cyanoacrylate instant adhesive Loctite 495 (Henkelstr, Düsseldorf, Germany).…”

Section: Experimental Setup and Energy Harvesting Configurationsmentioning

confidence: 99%

“…due to its electromechanical properties [40,41]. The transducer film was cut and attached with a cyanoacrylate instant adhesive Loctite 495 (Henkelstr, Düsseldorf, Germany).…”

Section: Experimental Setup and Energy Harvesting Configurationsmentioning

confidence: 99%

Electrical Performance of a Piezo-inductive Device for Energy Harvesting with Low-Frequency Vibrations

Vargas

Tinoco

2019

Actuators

Self Cite

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This study presents the experimental evaluation of a piezo-inductive mechanical system for applications of energy harvesting with low-frequency vibrations. The piezo-inductive vibration energy harvester (PI-VEH) device is composed of a voice coil motor (VCM) extracted from a hard disk drive. The proposed design allows the integration of different element types as beams and masses. The dynamic excitations in the system produce a pendular motion carried out by a hybrid arm (rigid-flexible) that generates energy with the rotations (with a coil) and the beam strains (with a piezoelectric material). The electrical assessment was performed through different working modes classified as inductive, inductive with magnetic instabilities, and piezo-inductive. The instabilities in the harvester refer to external forces induced by two magnets that repel each other. The first two inductive configurations were designed as a function of three parameters (length, mass, instability angle) to debug these using the maximum output voltage. The selected experiments were conducted in a piezo-inductive configuration. The results showed two effects on the output voltage-the first one is related to a system without resonances (higher broadband), and the second effect is associated with a multi-resonant system. As a final conclusion, it is pointed out that the electrical performance can be improved with the magnetic instabilities since these considerably amplified the output voltages.Actuators 2019, 8, 55 2 of 14 applications [5]. For example, [6] show that the energy harvesting systems can feed sensor networks, since the replacement of the batteries can be very impractical due to its remote locations. For this case, the use of non-limited energy sources becomes relevant if energy harvesting technologies can capture, store, and supply the energy permanently to these sensor networks [7].Different alternatives have been proposed to use the renewable energy sources through the energy scavenging, which is defined as the process by which the energy is transformed and provided into small quantities [8]. Diverse energy sources are used for this purpose, among which are solar, wind, electromagnetic radiation, thermal, and mechanical vibrations [9], and a combination of different transduction mechanisms can be integrated in order to capture the energy from these energy sources such as magnetostrictive, piezoelectric, electromagnetic, and electrostatic. These systems are called hybrid energy harvesters (HEH), as mentioned by [10]. Vibratory energy sources have shown promissory applications in devices that demand low power consumption [11]. Since the electrical power is obtained with resonant systems that can improve its electrical performance from the design focused on the excitation frequencies [12,13]. In this context, the energy generated by mechanical vibrations could be provided from the bridges, winds, river and sea waves, human body motions, etc. For the mentioned energy sources, [14] considers high frequencies to be above 50 Hz and low frequ...

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Evaluation of a Piezo-Actuated Sensor for Monitoring Elastic Variations of Its Support with Impedance-Based Measurements

Cited by 17 publications

References 43 publications

Effect of the Dynamic Cone Angle on the Atomization Performance of a Piezoceramic Vibrating Mesh Atomizer

Effect of the Dynamic Cone Angle on the Atomization Performance of a Piezoceramic Vibrating Mesh Atomizer

Piezoceramic-Based Damage Monitoring of Concrete Structure for Underwater Blasting

Electrical Performance of a Piezo-inductive Device for Energy Harvesting with Low-Frequency Vibrations

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