Development of the backscattered intensity integral imaging technique for the detection of micro-channels in shelf-stable food packages

Research output: Contribution to journalConference articlepeer-review

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 languageEnglish (US)
Pages (from-to)777-780
Number of pages4
JournalProceedings of the IEEE Ultrasonics Symposium
Volume1
StatePublished - Dec 1 1996
EventProceedings of the 1996 IEEE Ultrasonics Symposium. Part 2 (of 2) - San Antonio, TX, USA
Duration: Nov 3 1996Nov 6 1996

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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