CIVA Modelling as an Effective Tool for Air-coupled Through-Transmission Ultrasonic Inspection
Air-coupled ultrasound has been used as a tool for surface profilometry and to inspect highly attenuative materials such as composite laminates and foams for voids or disbonded areas. Significant losses are experienced with air-coupled ultrasound applications due to the attenuation in air and hig...
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| Main Author: | |
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| Format: | Article |
| Language: | deu |
| Published: |
NDT.net
2024-12-01
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| Series: | e-Journal of Nondestructive Testing |
| Online Access: | https://www.ndt.net/search/docs.php3?id=30492 |
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| Summary: | Air-coupled ultrasound has been used as a tool for surface profilometry and to inspect highly attenuative
materials such as composite laminates and foams for voids or disbonded areas. Significant losses are experienced
with air-coupled ultrasound applications due to the attenuation in air and high impedance mismatch. As a result,
not many inspections use the traditional pulse-echo approach. Instead, through transmission is preferred.
Considering how most air-coupled probes are driven using a tone-burst excitation, resulting in a very narrow
bandwidth (ringy) pulse, through transmission is a practical option since it relies solely on amplitude response
rather than temporal resolution. CIVA software features the ability to simulate an air-coupled ultrasonic
through-transmission inspection by using imported 3D CAD files. This paper describes how such an inspection
can be modelled in the simulation software.
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| ISSN: | 1435-4934 |