Back to Search
Start Over
Measurement of a 3D Ultrasonic Wavefield Using Pulsed Laser Holographic Microscopy for Ultrasonic Nondestructive Evaluation
- Source :
- Sensors (Basel, Switzerland), Sensors, Vol 18, Iss 2, p 573 (2018), Sensors; Volume 18; Issue 2; Pages: 573
- Publication Year :
- 2018
- Publisher :
- MDPI, 2018.
-
Abstract
- In ultrasonic array imaging, 3D ultrasonic wavefields are normally recorded by an ultrasonic piezo array transducer. Its performance is limited by the configuration and size of the array transducer. In this paper, a method based on digital holographic interferometry is proposed to record the 3D ultrasonic wavefields instead of the array transducer, and the measurement system consisting of a pulsed laser, ultrasonic excitation, and synchronization and control circuit is designed. A consecutive sequence of holograms of ultrasonic wavefields are recorded by the system. The interferograms are calculated from the recorded holograms at different time sequence. The amplitudes and phases of the transient ultrasonic wavefields are recovered from the interferograms by phase unwrapping. The consecutive sequence of transient ultrasonic wavefields are stacked together to generate 3D ultrasonic wavefields. Simulation and experiments are carried out to verify the proposed technique, and preliminary results are presented.
- Subjects :
- ultrasonic imaging
Materials science
Acoustics
Holography
digital holographic microscopy
CCD sensor
lcsh:Chemical technology
Biochemistry
Article
Analytical Chemistry
law.invention
law
Microscopy
050602 political science & public administration
lcsh:TP1-1185
Electrical and Electronic Engineering
array transducer
Instrumentation
System of measurement
05 social sciences
ultrasonic wavefield
050301 education
Holographic interferometry
Atomic and Molecular Physics, and Optics
0506 political science
Charge-coupled device
Ultrasonic sensor
Digital holographic microscopy
Transient (oscillation)
0503 education
Subjects
Details
- Language :
- English
- ISSN :
- 14248220
- Volume :
- 18
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Sensors (Basel, Switzerland)
- Accession number :
- edsair.doi.dedup.....ae1f74692423eca8e3f575ba0838ad68