Comparison of PZT, PZT Based 1–3 Composite and PMN–PT Acoustic Emission Sensors for Glass Fiber Reinforced Plastics

Kim, Geonwoo; Seo, Mu-Kyung; Choi, Namkyoung; Kim, Yong‐Il; Kim, Ki-Bok

doi:10.1007/s12541-019-00055-7

Cited by 9 publications

(7 citation statements)

References 12 publications

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“…However, general acoustic emission sensors have certain limitations for these materials due to the low acoustic impedances. Kim et al [101] compared various high sensitivity acoustic emission sensors for glass reinforced plastic to achieve a broadband frequency spectrum.…”

Section: Acoustic Emission Testingmentioning

confidence: 99%

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A review of non-destructive testing on wind turbines blades

2020

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Wind energy, with an exponential growth in the last years, is nowadays one of the most important renewable energy sources. Modern wind turbines are bigger and complex to produce more energy. This industry requires to reduce its operating and maintenance costs and to increase its reliability, safety, maintainability and availability. Condition monitoring systems are beginning to be employed for this purpose. They must be reliable and cost-effective to reduce the long periods of downtimes and high maintenance costs, and to avoid catastrophic scenarios caused by undetected failures. This paper presents a survey about the most important and updated condition monitoring techniques based on non-destructive testing and methods applied to wind turbine blades. In addition, it analyses the future trends and challenges of structural health monitoring systems in wind turbine blades.

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Section: Acoustic Emission Testingmentioning

confidence: 99%

“…The fault signals are weak and are masked by large noise disturbances. [101] Comparison of AE sensors for glass fiber reinforced plastics…”

Section: Refmentioning

confidence: 99%

A review of non-destructive testing on wind turbines blades

2020

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“…The backing materials act like a mechanical damper that absorbs the ultrasonic waves generated on the back side of the piezo-electric element. It also determines the bandwidth of the response waveforms by controlling their acoustic impedance [25,26,27,28]. The front matching layer is located between the piezo-electric element and a test specimen and serves as an acoustic impedance matching filter to minimize loss of the acoustic energy and to control the phase of the transmitted ultrasonic signals [5,6,25,26,27,28].…”

Section: Ultrasonic Transducer Designmentioning

confidence: 99%

“…In addition, to determine the acoustic impedance of the backing material, backing materials with various acoustic impedance were simulated using the KLM model. From this, 8 × 10 6 kg/m 2 s was selected as the acoustic impedance of the ultrasonic transducer, with about 60% bandwidth as in our previous studies [5,6,25,26].…”

Section: Ultrasonic Transducer Designmentioning

confidence: 99%

“…For the ultrasonic transducer design and simulation, various models based on equivalent circuits have been developed such as the Mason, Redwood, and KLM models [20,21,22]. Among these models, the KLM model was selected for this study due to its simple acoustic transmission nodes and transfer functions that operate in a more physically intuitive manner than in the others [23,24,25,26]. The KLM model can simulate the thickness-vibration mode of a piezo-electric material, from which its ultrasonic pulse-echo response signals can be obtained.…”

Section: Introductionmentioning

confidence: 99%

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Pb(Mg1/3Nb2/3)-PbTiO3-Based Ultrasonic Transducer for Detecting Infiltrated Water in Pressurized Water Reactor Fuel Rods

Kim

Choi

Kim

et al. 2019

Sensors

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In this study, a high-sensitivity Pb( Mg 1 / 3 Nb 2 / 3 ) O 3 - PbTiO 3 (PMN-PT)-based ultrasonic transducer was developed for detecting defective pressurized water reactor (PWR) fuel rods. To apply the PMN-PT substance to nuclear power plant facilities, given the need to guarantee their robustness against radioactive materials, the effects of neutron irradiation on PMN-PT were investigated. As a result, the major piezo-electric constants of PMN-PT, such as the electrical impedance, dielectric constant, and piezo-electric charge constant, were found to vary within acceptable ranges. This means that the PMN-PT could be used as the piezo-electric material in the ultrasonic transducer for nuclear power plants. The newly developed ultrasonic transducer was simulated using a modified KLM model for the through-transmission method and fabricated under the same conditions as in the simulation. The through-transmitted waveforms of normal and defective PWR fuel rods were obtained and compared with simulated results in the time and frequency domains. The response waveforms of the newly developed ultrasonic transducer for pressurized water reactor (PWR) fuel rods showed good agreement with the simulation outcome and could clearly detect defective specimens with high sensitivity.

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Application of Acoustic Emission for the Inspection of Fiber-Reinforced Composite Materials

Zhong

Nsengiyumva

2022

Nondestructive Testing and Evaluation of Fiber-Reinforced Composite Structures

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Comparison of PZT, PZT Based 1–3 Composite and PMN–PT Acoustic Emission Sensors for Glass Fiber Reinforced Plastics

Cited by 9 publications

References 12 publications

A review of non-destructive testing on wind turbines blades

A review of non-destructive testing on wind turbines blades

Pb(Mg1/3Nb2/3)-PbTiO3-Based Ultrasonic Transducer for Detecting Infiltrated Water in Pressurized Water Reactor Fuel Rods

Application of Acoustic Emission for the Inspection of Fiber-Reinforced Composite Materials

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