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To draw reliable conclusions from results gained with non-destructive testing methods in civil-engineering (NDT-CE) it is important to know about the quality of results. Since recent times, the POD (probability of detection) according to MIL-HDBK-1823A and Berens Report is established in non-destructive testing in civil engineering (NDT-CE) to assess the reliability of qualitative testing problems. For determining the uncertainty of measurements of quantitative (metric) problems the Guide (Guide to the Expression of Uncertainty in Measurements – GUM) is used in NDT-CE. Now, a new approach is to adapt both methods to get statistically secured measurement results with NDT-CE from existing structures such as prestressed bridges. This paper introduces how calculations based on stochastic models can be used together with NDT-CE results analysed with POD and the Guide.

Methods to Assess the Quality of Non-Destructive Testing in Civil Engineering Using POD and GUM for Static Calculations of Existing Structures *