A simulation of probability of rejection as an aid to understanding the significance of sizing accuracy

Mariana Burrowes M. Guimarães; Edward Ginzel; Fabrice Foucher; Mohammad Ebrahim Bajgholi; Luis Marcelo Tavares; Gabriela R. Pereira

doi:10.1117/12.2657513

25 April 2023 A simulation of probability of rejection as an aid to understanding the significance of sizing accuracy

Mariana Burrowes M. Guimarães, Edward Ginzel, Fabrice Foucher, Mohammad Ebrahim Bajgholi, Luis Marcelo Tavares, Gabriela R. Pereira

Author Affiliations +

Proceedings Volume 12491, 8th International Workshop on Reliability of NDT/NDE; 124910A (2023) https://doi.org/10.1117/12.2657513
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States

Abstract

In Quantitative Nondestructive Evaluation (QNDE), assessing the reliability of the NDT method is crucial. Technology advances and the development of new life estimation models based on the damage tolerance concept have led to the maturing of QNDE techniques. Nowadays, the concept is widely used for such models in fitness-for-service (FFS) assessments. As an input to these models, flaws size plays a very important role. In these concepts, Probability of Rejection (PoR) was introduced around 2007 and combined the concepts of Probability of Detection (PoD) with the need to accurately size flaws when using fracture mechanics-based acceptance criteria. Improvements in sizing techniques have been made and fracture-mechanics acceptance criteria are becoming more commonly accepted instead of the traditional workmanship criteria. However, experimental PoD campaigns are excessively time and money-consuming, rapidly making them almost prohibitive. On the other hand, recent advances in technology to accurately simulate nondestructive testing (NDT) processes made available new tools for reliability study. This paper uses CIVA’s ultrasonic inspection simulation to demonstrate how small changes on the flaw sizing characterization would affect probability of rejection.

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Mariana Burrowes M. Guimarães, Edward Ginzel, Fabrice Foucher, Mohammad Ebrahim Bajgholi, Luis Marcelo Tavares, and Gabriela R. Pereira "A simulation of probability of rejection as an aid to understanding the significance of sizing accuracy", Proc. SPIE 12491, 8th International Workshop on Reliability of NDT/NDE, 124910A (25 April 2023); https://doi.org/10.1117/12.2657513

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