Mode selection of Lamb waves for the evaluation of solid plates with liquid loading

Gao, Guangjian; Deng, Mingxi; Li, MingLiang; Pei, Jian

doi:10.1007/s11433-013-5269-0

Cited by 4 publications

(1 citation statement)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This antisymmetric Lamb wave mode can be directly used in practical applications such as the estimation of the plate thickness [20], detection of defects in underwater pipes [5], identification of corrosion damage in submerged metallic structures [6], etc. Meanwhile, due to characteristics such as low attenuation, symmetric modes, especially those at a specific fd range, are frequently used in evaluations of solid plates, such as in hidden defect detection [21], multiple defect detection [22], corrosion monitoring [23], imaging of immersed plates with defects [24], and so on. These symmetric modes of Lamb waves at a specific fd range can also be generated and detected by contact-transducers.…”

Section: Introductionmentioning

confidence: 99%

Defects Detection and Localization in Underwater Plates Using Laser Laterally Generated Pure Non-Dispersive S0 Mode

Xie

Shen

2019

Applied Sciences

View full text Add to dashboard Cite

Featured Application: This study provides a non-contact method of defect detection and localization in underwater plates using pure S 0 mode of Lamb wave with small dispersion generated by laterally distributed laser source.Abstract: When working in humid environments, corrosion defects are easily produced in metallic plates. For defect detection in underwater plates, symmetric modes of Lamb waves are widely used because of their characteristics including long propagating distance and high sensitivity to defects. In this study, we extend our previous work by applying the laser laterally generated S 0 mode to detection and localization of defects represented by artificial notches in an aluminum plate immersed in water. Pure non-dispersive S 0 mode is generated in an underwater plate by lateral laser source irradiation and its fd (frequency·thickness) range is selected by theoretical calculation. Using this lateral excitation, the S 0 mode is enhanced; meanwhile, the A 0 mode is effectively suppressed. The mode-converted A 0 mode from the incident S 0 mode is used to detect and localize the defect. The results reveal a significantly improved capability to detect defects in an underwater plate using the laser laterally generated S 0 mode, while that using A 0 is limited due to its high attenuation. Furthermore, owing to the long propagating distance and the non-dispersion characteristics of the S 0 generated by the lateral laser source, multiple defects can also be detected and localized according to the mode conversion at the defects.

show abstract

Section: Introductionmentioning

confidence: 99%

Defects Detection and Localization in Underwater Plates Using Laser Laterally Generated Pure Non-Dispersive S0 Mode

Xie

Shen

2019

Applied Sciences

View full text Add to dashboard Cite

show abstract

Propagation characteristics of acoustic emission signals in solid-liquid-solid coupling interface

Jin

Guo

et al. 2023

Measurement

View full text Add to dashboard Cite

Investigation of film bulk acoustic resonators for sensing applications in liquid environment

Zhou

Zou

Gao

et al. 2022

Applied Physics Letters

View full text Add to dashboard Cite

The thin film bulk acoustic resonator (FBAR) has emerged as a promising choice for liquid sensors because of its high frequency and sensitivity. To investigate the potential of FBAR devices working as the liquid sensors, we study the operating law of FBAR in liquid environments and explore the different loading effects of liquid on the shear mode and longitudinal mode. By analyzing the device and liquid interactions, we modify the Mason model of FBAR in the liquid environment. Subsequently, the influence of the piezoelectric film with different tilt angles and liquids on the characteristics of FBAR is discussed. We also prepared Sc0.2Al0.8N film-based FBAR to confirm the influence of different liquid environments on the resonant performances. The results show that the frequency drift of FBAR in the shear mode is related to density and viscosity of liquid, and the frequency drift of FBAR in the longitudinal mode is related to bulk modulus and density of liquid. The resonant frequency of FBAR in the shear mode is more sensitive with glycerol solution than that of FBAR in the longitudinal mode. This work can provide a research basis for the application of FBAR liquid sensors.

show abstract

Mode selection of Lamb waves for the evaluation of solid plates with liquid loading

Cited by 4 publications

References 17 publications

Defects Detection and Localization in Underwater Plates Using Laser Laterally Generated Pure Non-Dispersive S0 Mode

Defects Detection and Localization in Underwater Plates Using Laser Laterally Generated Pure Non-Dispersive S0 Mode

Propagation characteristics of acoustic emission signals in solid-liquid-solid coupling interface

Investigation of film bulk acoustic resonators for sensing applications in liquid environment

Contact Info

Product

Resources

About