The Synergy of TRIZ and Automatic Optical Inspection (AOI) for Detecting Surface Defects on Small Metal Parts

Abstract

The aim of this paper is to show how to apply TRIZ to resolve difficulties and conflicts in Automatic Optical Inspection (AOI) for detecting surface defects on small metal parts and saving effort-spent (energy saving). TRIZ has been well-known as a creative and innovative thinking theory in solving engineering and technology contradictions in the last two decades. However, few studies and practical usage were proposed in AOI area. Conflicts occurring in AOI are discussed to demonstrate the ideas guided by 39 TRIZ management parameters, 40 innovative principles, and contradiction matrix. The results show that TRIZ is able to provide direct, quick and effective alternatives to resolve the conflicts in AOI. In this manner, huge effort and cost can be saved in further execution stage. In this paper, the detection for surface defects on small and precise metal part are utilized as a case study to describe the proposed TRIZ-based conflicts-solution in AOI implementation.