The DUT failure history is the complete record of all defects, anomalous behaviors, and test statuses that a given tested product has exhibited throughout its lifecycle — from initial testing to possible field returns (RMA). This history is essential for the identification of recurring failures, technical traceability, continuous improvement, and
The 5 Whys technique is a simple and powerful root cause analysis tool, which involves asking “why?” repeatedly (five times or more) to identify the real origin of a problem. The goal is to go beyond the symptoms and find the technical and procedural root cause, enabling lasting corrective actions.
The 8D (Eight Disciplines) is a systematic approach to solving complex problems, especially effective for recurring or critical non-conformities in industrial environments. Originally developed by Ford, 8D is now a global reference for structured corrective actions, with traceability and organizational learning. The 8D goes beyond just correcting the problem: it