Function Analysis Plus and Cause-Effect Chain Analysis Plus with Applications

  • Min-Gyu Lee


In an inventive problem-solving project, the most important steps are often problem analysis and idea generation. Recently, two practical methods for these steps were introduced by the Korean consulting industry—Function Analysis Plus (FA+) and Cause-Effect Chain Analysis Plus (CECA+). This chapter introduces an application of these two methods in a TRIZ-based Define–Analyze–Solve–Execute (DASE) roadmap for inventive problem solving. The roadmap provides problem solvers an algorithmic roadmap with systematic methods and convenient tools for analysis and ideation. Especially, with FA+ and CECA+, the solver can identify comprehensive solving directions ‘semi-automatically’, which helps the solver to generate rich ideas along diverse solving directions. As an example, these methods are applied to a project of inventing a self-watering flowerpot.


Function analysis Cause effect chain analysis Inventive problem solving TRIZ 



I would like to thank Professor Leonid Chechurin at Lappeenranta University of Technology, Finland, and TRIZ masters Vasily Lenyashin and Yury Danilovskiy at QM&E Innovation for their guidance and help in this exciting field of innovation.


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Copyright information

© The Author(s) 2019

Authors and Affiliations

  • Min-Gyu Lee
    • 1
    • 2
  1. 1.Department of Industrial Engineering and ManagementLappeenranta University of TechnologyLappeenrantaFinland
  2. 2.QM&E Innovation & Uni Innovation LabBundang-gu, Seongnam-si, Gyeonggi-doSouth Korea

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