Abstract
The detection of smaller channels in packaging seals using an imaging technique displays a single-time gated pressure value from the received RF waveform at each transducer position. The applicability of this technique is demonstrated for plastic and aluminum foil trilaminate films with water or air filled channels. The images are formed with a focused ultrasound transducer scanned over a rectangular grid. The time gate used to create an image is chosen based on where the maximum reflection from the back surface of the material is expected. Images created with this RF sampling (RFS) technique demonstrate higher contrast than other imaging techniques.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 627-630 |
| Number of pages | 4 |
| Journal | Proceedings of the IEEE Ultrasonics Symposium |
| Volume | 1 |
| State | Published - 1997 |
| Event | Proceedings of the 1997 IEEE Ultrasonics Symposium. Part 1 (of 2) - Toronto, Can Duration: Oct 5 1997 → Oct 8 1997 |
ASJC Scopus subject areas
- Acoustics and Ultrasonics