Optimization of a car brake prototype as a consequence of successful DOE training

In this article we discuss the importance of running a successful experiment while teaching design of experiments (DOE) to working engineers. A key aspect is to build engineer's confidence in DOE methodology and in their capabilities of using it, and this means keeping the content simple and developing a learning-by-doing experience. We cover several aspects of the course content and preparation, but the emphasis is in the preparation, follow up, roles of teachers and attendants, and the planning and steps followed in preparing and conducting the real experiment. A crucial aspect is making sure that the attendants recognize that they have gained valuable knowledge. A measure of the success of the approach suggested is that after the course and the real experiment associated with it were finished, Bosch's engineers have run several other experiments completely on their own. Even though a professional statistician may have done a better job, the use of the techniques were correct and the learning from the experiments was highly valuable.