Professional paper

Application of Low - intensity Ultrasound („pulse – echo“) for Damage Detection of Packaging Materials and Foreign Bodies in Packaged Products

Tomislav Bosiljkov ; Faculty of Food Technology and Biotechnology, Department of Biochemical Engineering , University of Zagreb, Pierotti street 6, 10.000 Zagreb, Croatia
Sven Karlović ; Faculty of Food Technology and Biotechnology, Department of Biochemical Engineering , University of Zagreb, Pierotti street 6, 10.000 Zagreb, Croatia
Branko Tripalo ; Faculty of Food Technology and Biotechnology, Department of Biochemical Engineering , University of Zagreb, Pierotti street 6, 10.000 Zagreb, Croatia
Mladen Brnčić ; Faculty of Food Technology and Biotechnology, Department of Biochemical Engineering , University of Zagreb, Pierotti street 6, 10.000 Zagreb, Croatia
Damir Ježek ; Faculty of Food Technology and Biotechnology, Department of Biochemical Engineering , University of Zagreb, Pierotti street 6, 10.000 Zagreb, Croatia
Suzana Rimac Brnčić ; Faculty of Food Technology and Biotechnology, Department of Biochemical Engineering , University of Zagreb, Pierotti street 6, 10.000 Zagreb, Croatia
Antonija Penava ; Faculty of Food Technology and Biotechnology, Department of Biochemical Engineering , University of Zagreb, Pierotti street 6, 10.000 Zagreb, Croatia
Damir Karlović ; Faculty of Food Technology and Biotechnology, Department of Biochemical Engineering , University of Zagreb, Pierotti street 6, 10.000 Zagreb, Croatia

Abstract

In order to achieve precise and clear definitions of possible flaws, imperfections in packaging materials, low intensity ultrasound is the basic applied technique. The most useful applications of low intensity ultrasound are for detection of foreign bodies, damages and holes inside of the packaging materials. Ultrasound is mechanical vibration similar to audible sound. Diagnostic investigations were performed in frequency range between 1MHz – 30MHz with low intensity (<1 W/cm²). This article indicate different techniques of using low intensity ultrasound such as “pulse – echo” method like a more effective method for detection of foreign bodies inside of packaging materials during production. The main goal of measuring of acoustic impedance is acquiring distinct images of analyzed contact places of packaging materials. There are also shown the basic characteristics of BAI (Backscattering Amplitude Integral) technique of getting images and their analysis for identification of damages of
connecting places of packaging materials.

Keywords

packaging material; ” pulse – echo” method; low intensity ultrasound

Hrčak ID:

59410

URI

https://hrcak.srce.hr/59410

Publication date:

30.6.2010.

Article data in other languages: croatian

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