Eum, Jae-Min Kim, Eun-Ji Kim, Dae-Su Go, Su-Hwan Chae, Yeon-Gyeong Lee, Dong-Gyu Il Kim, Seung Choi, Yong Rak Choi, Wonjae Ha, Jong Moon Seung, Hong Min Nahm, Sahn 2024-01-19T10:02:22Z 2024-01-19T10:02:22Z 2023-03-10 2023-03 0272-8842 https://pubs.kist.re.kr/handle/201004/113957 Face-shear deformation was observed in various square piezoelectric transducers prepared using the anti-parallel co-poling method, which led to uniform polarization and the generation and receipt of pure fundamental shear horizontal (SH0) waves without any Lamb wave. The amplitude of the SH0 wave was found to be proportional to the piezoelectric charge constant (d33) of the piezoceramic, suggesting that the d33 value can be used as a figure of merit for piezoelectric transducers with strong SH0 waves. The amplitude of the SH0 wave associated with the square piezoelectric transducer is large at 0 degrees and 90 degrees but almost zero at 45 degrees; therefore, a piezoelectric transducer with good omnidirectional properties needs to be developed. A ring-type omnidirectional piezoelectric trans-ducer was produced using eight trapezoidal piezoceramics. The minimum amplitude of the SH0 wave generated and received by the ring type-transducer exceeded 70% of the maximum amplitude. Hence, this ring-type transducer is highly omnidirectional and can be used for nondestructive testing and structural health-monitoring applications. English Pergamon Press Ltd. Developing a face-shear lead-free piezoelectric transducer through anti-parallel co-poling and its application to an omnidirectional piezoelectric transducer Article 10.1016/j.ceramint.2022.10.252 1 Ceramics International, v.49, no.5, pp.7556 - 7565 Ceramics International 49 5 7556 7565 N scie scopus 000932660000001 2-s2.0-85141882115 Materials Science, Ceramics Materials Science Article GUIDED-WAVE EMAT HORIZONTAL WAVES DEFECT DETECTION SINGLE-CRYSTALS LAMB INSPECTION GENERATION EXCITATION RECEPTION MODE (C) Piezoelectric properties (D) Perovskites (E) Actuators (E) Sensors Lead-free