Original scientific paper

Differential digital holography in quality control

Krešimir Nenadić ; Faculty of Electrical Engineering, J. J. Strossmayer University of Osijek, Kneza Trpimira 2b, 31000 Osijek, Croatia
Tomislav Keser ; Faculty of Electrical Engineering, J. J. Strossmayer University of Osijek, Kneza Trpimira 2b, 31000 Osijek, Croatia
Franjo Jović ; Faculty of Electrical Engineering, J. J. Strossmayer University of Osijek, Kneza Trpimira 2b, 31000 Osijek, Croatia

Abstract

This paper describes a method of differential digital holography applicable in quality control for some manufacturing processes. The proposed method is able to differentiate 3D objects without production defects and similar 3D objects with production defects. Holograms of all objects are created using off-axis laboratory setup. Computer is used to compare holograms or difference holograms and determine whether the manufactured object has some defect or no defect. Production defects can be in the form of pattern errors or in the form of surface bumps. A model of production setup for implementation in manufacturing processes is proposed.

Keywords

digital hologram; defect detection; product quality control

Hrčak ID:

69584

URI

https://hrcak.srce.hr/69584

Publication date:

27.6.2011.

Article data in other languages: croatian

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