Abstract
Hermetically sealed flexible food packages require a very effective seal integrity test to guarantee the quality of thermally processed food. In this contribution a new ultrasonic pulse-echo technique called Back-scattered Intensity Integral (BII)-mode imaging for the detection of micro-channel defects in these types of food packages is proposed and evaluated. The BII technique integrates the received backscattered signal of each A-line and produces an integrated spatial map, a BII-mode image. It has been shown that the BII-mode image has the ability for subwavelength detection of channel defects. For example, that a 10 μm-diameter channel defect can be detected at a center frequency of 15 MHz (λ≈140 μm).
| Original language | English (US) |
|---|---|
| Pages (from-to) | 777-780 |
| Number of pages | 4 |
| Journal | Proceedings of the IEEE Ultrasonics Symposium |
| Volume | 1 |
| State | Published - 1996 |
| Event | Proceedings of the 1996 IEEE Ultrasonics Symposium. Part 2 (of 2) - San Antonio, TX, USA Duration: Nov 3 1996 → Nov 6 1996 |
ASJC Scopus subject areas
- Acoustics and Ultrasonics