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Jun-Cheol Lee and Chang-Joon Lee
The electro-mechanical impedance (EMI) change in Piezoelectric (PZT) sensors embedded in steel-fiber-reinforced mortar (SFRM) was investigated to assess the material setting time. The EMI was continuously monitored for 12 h by the PZT sensor embedded in ...
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Ilaria Ronconi, Roberta Salierno, Ling Liu, Andrea Giglio, Francesco Ripamonti and Ingrid Paoletti
The limitations of active noise control (ANC) in coping with low frequencies and of passive noise control (PNC) in coping with middle-high frequencies are objects of research that present the potentialities of hybrid noise control (HBC). It aims at combi...
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Sang-Hyub Moon, Kyung Hwa Chang, Hyun Mok Park, Bong Joo Park, Sun Kook Yoo and Ki Chang Nam
The functional components of vibrating mesh nebulizers are a piezoelectric ceramic with a mesh mounted on one side, a reservoir, and a driving circuit. The piezoelectric material vibrates at a specific intrinsic frequency, and when the mechanical resonan...
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Tao Wang, Bohai Tan, Mingge Lu, Zheng Zhang and Guangtao Lu
To detect small cracks in plate like structures, the high frequency characteristics of local dynamics were studied with the piezoelectric electro-mechanical impedance (EMI) method, and damages were monitored by the changes of the EMI. The finite element ...
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Vitalii Didkovskyi,Sergey Naida,Oleksandr Drozdenko,Kateryna Drozdenko
Pág. 6 - 12
Experimental confirmation of the possibility of real-time measurement of the internal (deep) temperature of a biological object by thermal acoustic radiation with an accuracy of at least 0.2 °C using an acoustic thermometer implementing the modified...
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Wongi S. Na and Ki-Tae Park
Debonding detection of composite structures is a vital task as such damage weakens the structure leading to a failure. As adhesive bonding is a more preferable choice over the conventional mechanical fastening method, detecting debonding as early as poss...
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Yu-Chih Lin, Yu-Hsi Huang and Kwen-Wei Chu
This investigation is to establish the model of solid?liquid coupled vibration for piezoelectric material. The experimental measurements and finite element computation results are in good agreement for both the anti-phase and in-phase vibrations coupled ...
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Nicolás Pérez, Alvaro García, Enrique Riera and Lorena Pardo
(Bi0.5Na0.5)0.94Ba0.06TiO3 dense ceramics were obtained from autocombustion sol-gel synthesized nanopowders and sintered at 1050 °C for 1?2 h for the study of the electromechanical anisotropy. Measurement of the complex impedance spectrum was carried out...
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Byeongil Kim and Jong-yun Yoon
This article investigates vibration rejection for a continuous smart structure using piezoelectric bimorph patches. Such a structure has inherent nonlinearities, such as hysteresis and creep, and the whole system may experience unexpected disturbances, u...
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