Results 51 to 60 of about 6,744 (161)

Characteristics of Lamb Wave Propagation on a Nanoscale Membrane Induced by a Laser Ultrasonic Technique [PDF]

open access: yes한국정밀공학회지
A lamb wave propagation behavior on a freestanding nanoscale membrane was investigated using a laser ultrasonic technique in the present study. A 110-nm thick aluminum (Al) layer was deposited on a rectangular 200-nm thick silicon nitride (SiN) membrane ...
Yun Young Kim
doaj   +1 more source

Multi-Wave Structures of Traveling Ionospheric Disturbances Associated with the 2022 Tonga Volcanic Eruptions in the New Zealand and Australia Regions

open access: yesRemote Sensing
Using dense global navigation satellite system data and brightness temperature data across the New Zealand and Australia regions, we tracked the propagation of traveling ionospheric disturbances (TIDs) associated with the 15 January 2022 Tonga volcanic ...
Xiaolin Li   +6 more
doaj   +1 more source

Integrated Structural Health Assessment Using Piezoelectric Active Sensors

open access: yesShock and Vibration, 2005
This paper illustrates an integrated approach for identifying structural damage. The method presented utilizes piezoelectric (PZT) materials to actuate/sense the dynamic response of the structures.
Jeannette R. Wait   +2 more
doaj   +1 more source

A Lamb Wave Wavenumber-Searching Method for a Linear PZT Sensor Array

open access: yesSensors, 2019
In this paper, a wavenumber−searching method based on time-domain compensation is proposed to obtain the wavenumber of the Lamb wave array received signal.
Bin Liu, Tingzhang Liu, Jianfei Zhao
doaj   +1 more source

Lamb wave-based corrosion source location on a plate of magnesium alloy WZ73 using the acoustic emission technique

open access: yesCorrosion Communications
Corrosion on a plate of magnesium alloy WZ73 in contact with 0.001 mol/L NaCl solution was analysed by long-range testing using the acoustic emission (AE) technique. At a distance d = 1.66 m to the source, the Lamb wave propagation of resulting AE events
Marcel Mandel   +3 more
doaj   +1 more source

Fully Noncontact Wave Propagation Imaging in an Immersed Metallic Plate with a Crack

open access: yesShock and Vibration, 2014
This study presents a noncontact sensing technique with ultrasonic wave propagation imaging algorithm, for damage visualization of liquid-immersed structures. An aluminum plate specimen (400 mm × 400 mm × 3 mm) with a 12 mm slit was immersed in water and
Jung-Ryul Lee   +2 more
doaj   +1 more source

STATUS REPORT ON LAMB WAVES [PDF]

open access: yes, 1962
Theoretical and experimental aspects of Lamb waves are considered. These are described as body waves, or modes, which travel throughout an entire plate and are radiated from both surfaces, so that it is possible to detect Lamb waves when the receiver and sender are on opposite sides of the plate.
openaire   +2 more sources

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