Crack Detection in High-Velocity Oxygen-Fuel-Sprayed Al59.2Cu25.5Fe12.3B3 Quasicrystalline Coatings Using Piezoelectric Active Sensors

Gomes, Rodinei Medeiros; Feitosa, Francisco R. P.; Souto, Cícero da Rocha; Lima, Bruno Alessandro Silva Guedes de; Anselmo, José; Cunha, Maxsuel Ferreira; Sobrinho, José Marques Basílio; Dubois, Jean‐Marie

doi:10.1007/s11665-019-04298-3

Cited by 5 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This coating technique was applied to produce micrometric quasicrystalline alloy and was chosen because of its ease of operation, high efficiency, and mainly its low cost for coating large surfaces. Besides this, the HVOF-obtained micrometric quasicrystalline coating was shown to have high hardness, low sliding friction, high corrosion resistance [ 27 , 28 ], and good thermal properties such as high absorbance and low emittance. These properties turn micrometric quasicrystalline coating into a good option for coating solar thermal absorber [ 5 ].…”

Section: The Thermoelectric Energy Harvester Systemmentioning

confidence: 99%

A Thermoelectric Energy Harvester Based on Microstructured Quasicrystalline Solar Absorber

et al. 2021

View full text Add to dashboard Cite

As solar radiation is the most plentiful energy source on earth, thermoelectric energy harvesting emerges as an interesting solution for the Internet of Things (IoTs) in outdoor applications, particularly using semiconductor thermoelectric generators (TEGs) to power IoT devices. However, when a TEG is under solar radiation, the temperature gradient through TEG is minor, meaning that the TEG is useless. A method to keep a significant temperature gradient on a TEG is by using a solar absorber on one side for heating and a heat sink on the other side. In this paper, a compact TEG-based energy harvester that features a solar absorber based on a new class of solid matter, the so-called quasicrystal (QC), is presented. In addition, a water-cooled heat sink to improve the temperature gradient on the TEG is also proposed. The harvester is connected to a power management circuit that can provide an output voltage of 3 V and store up to 1.38 J in a supercapacitor per day. An experimental evaluation was carried out to compare the performance of the proposed QC-based harvester with another similar harvester but with a solar absorber based on conventional black paint. As a result, the QC-based harvester achieved 28.6% more efficient energy generation and achieved full charge of a supercapacitor around two hours earlier. At last, a study on how much the harvested energy can supply power to a sensor node for Smart agriculture during a day while considering a trade-off between the maximum number of measurements and the maximum number of transmission per day is presented.

show abstract

Section: The Thermoelectric Energy Harvester Systemmentioning

confidence: 99%

A Thermoelectric Energy Harvester Based on Microstructured Quasicrystalline Solar Absorber

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Piezoelectric transducers are used in various fields, such as nondestructive evaluation, image processing, acoustic signal detection, and energy harvesting [1][2][3][4]. Sound navigation and ranging (SONAR) is a technology for acoustic signal detection that can be used to detect objects under water.…”

Section: Introductionmentioning

confidence: 99%

Comparison between Resonance and Non-Resonance Type Piezoelectric Acoustic Absorbers

Pyun

Kim

Kwon

et al. 2019

Sensors

View full text Add to dashboard Cite

In this study, piezoelectric acoustic absorbers employing two receivers and one transmitter with a feedback controller were evaluated. Based on the target and resonance frequencies of the system, resonance and non-resonance models were designed and fabricated. With a lateral size less than half the wavelength, the model had stacked structures of lossy acoustic windows, polyvinylidene difluoride, and lead zirconate titanate-5A. The structures of both models were identical, except that the resonance model had steel backing material to adjust the center frequency. Both models were analyzed in the frequency and time domains, and the effectiveness of the absorbers was compared at the target and off-target frequencies. Both models were fabricated and acoustically and electrically characterized. Their reflection reduction ratios were evaluated in the quasi-continuous-wave and time-transient modes.Sensors 2020, 20, 47 2 of 17 previous studies. However, it is difficult to compare them due to the different approaches involved. Therefore, we believe that only resonance and non-resonance models with similar structures should be compared. In this study, resonance and non-resonance models suitable for the target frequency were designed via mathematical analysis. Based on the designs, the resonance and non-resonance models were fabricated and evaluated. The absorber was configured in the form of tiles, and the lateral size of the structure was equal to half of the wavelength. Our proposed resonance and non-resonance models were fabricated by stacking commercially available lead zirconate titanate (PZT). Various studies have previously investigated the stacking or direct fabrication of devices [14-19]. Materials and Methods ConceptIn the case of a piezoelectric material, vibration along the thickness direction is observed when an electrode is applied, and the sound spreads around both the front and rear sides of the piezoelectric material. The resonance frequency range of a piezoelectric material depends on its thickness. The thickness of a piezoelectric material and its resonance frequency are inversely proportional, i.e., the thinner the piezoelectric material, the higher is its resonance frequency and vice versa.In this paper, we present a model that resonates in the low frequency region of the target frequency and a non-resonance model that deviates from the target frequency. The proposed resonance and non-resonance models incorporated a function that cancelled a certain portion of the incident sound waves.The incident and reflected waves must be separated to cancel the incident sound wave. Two receiving sensors were required to separate the incident and reflected waves, as the signals were measured based on the overlap between these two waves. The incident (P + ) and reflected (P -) acoustic pressures were the input and output of the system, respectively (Figure 1). We calculated the incident and reflected acoustic sensitivities based on the different receiving sensitivities of the two sensors obtained using the Krimholtz-L...

show abstract

Free vibration and bending of one-dimensional quasicrystal layered composite beams by using the state space and differential quadrature approach

Sun

Guo

2022

Acta Mech

View full text Add to dashboard Cite

Crack Detection in High-Velocity Oxygen-Fuel-Sprayed Al59.2Cu25.5Fe12.3B3 Quasicrystalline Coatings Using Piezoelectric Active Sensors

Cited by 5 publications

References 28 publications

A Thermoelectric Energy Harvester Based on Microstructured Quasicrystalline Solar Absorber

A Thermoelectric Energy Harvester Based on Microstructured Quasicrystalline Solar Absorber

Comparison between Resonance and Non-Resonance Type Piezoelectric Acoustic Absorbers

Free vibration and bending of one-dimensional quasicrystal layered composite beams by using the state space and differential quadrature approach

Contact Info

Product

Resources

About