Defektrisk

Defektrisk is a quantitative concept used in quality engineering to quantify the risk associated with defects in a product, process, or system. It combines the likelihood of a defect occurring with the potential impact of that defect, and may also consider detectability or control effectiveness. The goal is to support prioritization of quality-improvement efforts and resource allocation.

The term blends the German word defekt, meaning defect, with risk. It appears in technical discussions within manufacturing, software development, aerospace, and other industries that emphasize risk-based quality management. Defektrisk is not universally standardized; rather, it is a practical framework for assessing defect-related risk in context.

Calculation and components commonly involved include the probability of a defect (P), the severity or impact (S or C), and sometimes detectability or containment effectiveness (D). A simple defektrisk score can be expressed as P × S, while a more detailed form may use P × S × D to reflect how easily a defect might be detected before it causes harm. Organizations may apply different weighting schemes and may employ methods such as Bayesian updating or Monte Carlo simulation to address uncertainty.

Applications of defektrisk include prioritizing corrective actions, guiding inspection and testing strategies, allocating maintenance and quality assurance resources, and tracking risk trends over time. It is often used in conjunction with established methods such as failure mode and effects analysis (FMEA), defect density metrics, and reliability-centered maintenance.

Limitations include dependence on data quality and subjective weighting, which can affect comparability across projects. As a flexible concept, defektrisk is best used as part of a broader risk management framework rather than as an isolated indicator.