A defect tracking tool framework for multi-process products

In production lines consisting of multi-process chains, defects are difficult to be detected, especially with a single-stage measurement. The framework presented in this paper concerns real-time defect tracking through modelling, leading to zero-defect manufacturing. The a priori knowledge of a mechanical system response is used. Examples of final products of gradually increasing complexity are studied in an attempt to detect the defect causes. The objective is to be able to manage highly complex products, such as the booster of brakes in automotive industry and potentially link the defect that has been detected to a preceding process that has generated it.