Using axiomatic design to improve conceptual design robustness in Design for Six Sigma (DFSS) methodology

Abstract

Design for Six Sigma (DFSS) is a systematic process and a disciplined problem-prevention approach to achieve business excellence. Robust design is the heart of DFSS. To ensure the success of robust parameter design, one should start with good design concepts. Axiomatic Design, a fundamental set of principles that determine good design practice, can help to facilitate a project team to accelerate the generation of good design concepts. Axiomatic Design holds that uncoupled designs are to be preferred over coupled designs. Although uncoupled designs are not always possible, application of axiomatic design principles in DFSS presents an approach to help the DFSS team focus on functional requirements to achieve design intents and maximise product reliability. As a result of the application of axiomatic design followed by parameter design, the DFSS team achieved design robustness and reliability. A hydraulic lash adjuster case study will be presented.