ABD Availability Based Design : A New Original Methodology preventing Modern Machine Design Failures

Designing novel products and machines is one of the most complex task of nature : this is due to the difficulty to satisfy antagonist constraints that have to be met for achieving (a) given satisfactorily design(s) regards to specifications. Modern life and quickly varying markets impose nowadays designers to integrate availability constraints at very early design stages of the design process. Additionally, 3 "large amounts" acting against designer's tasks increase nowadays drastically the risk of failure : 1) the extent of specifications to be met, 2) the breadth of standard manufacturing programs, 3) the extent of technical checks to be performed and satisfied. In order to avoid a new type of design failure that is, achieving a design that will not be available regards to timeline specifications ! In order to prevent this new failure type and to identify sufficient satisfactory design option(s) a new methodology called "ABD" has been developped : availability constraints (Time, MOQ, End of life, ...) are early integrated within the design process. Materials and processing parameters selection are also important parts of the design process. Where in the past, designers were mainly following sequential, so called "over the wall" approach, current "ABD" approach reorganize completely design steps. The current talk intends to make a detailed review of those constraining factors with the goal to prevent future machine design failures. After having shown nowadays issues, this talk details ABD methodology and its scheme : ABD facilitates the complex iterative tasks of designers by converging more quickly and securely to a group of satisfactorily design options. Finally, the talk concludes with the benefits of this new scheme in terms of time win and design failure risk prevention.