|Publication type:||Conference other|
|Type of review:||Peer review (abstract)|
|Title:||Practical application of structural risk assessment with SMART DT|
|Conference details:||22nd HOLSIP In-Person & Virtual Workshop, Snowbird, USA, 16-19 January 2023|
|Subjects:||Structural integrity; Holistic structural analysis|
|Subject (DDC):||629: Aeronautical, automotive engineering|
|Abstract:||Structural risk assessments are highly relevant to assure the integrity of the structure over the whole life-cycle of an aircraft. The Aircraft Structural Integrity Program (ASIP) introduces design guidance based on deterministic crack growth prediction for safety critical components. Today, with the increase of computational power, probabilistic methods instead of deterministic analysis can be deployed. Probabilistic Risk Assessment (PRA) offers the benefit of taking uncertainty into account and leads to less conservative estimates while meeting safety requirements. Facilities such as the National Research Council Canada (NRC) or the Defence Science and Technology Organization in Australia (DSTO) are already assessing safety critical elements with PRA. RUAG AG is interested in the application of this method for a military system. Based on the research performed by these facilities, the application of PRA is assessed. The probabilistic calculations are performed with SMART|DT. Structural fatigue data is needed for the assessment, which includes equivalent crack growth data, pre-crack size distributions (EPS), loading distributions and POD. The possibilities of the tool are assessed with four case studies with different data situations. Based on the case studies, existing methods are explored and implemented for the data acquisition. For better understanding PRAs and their application for the system, evaluations are performed including comparisons between spectra, different material data and the influence of different distributions on the probability of failure. With the applied methodologies, the case studies show very conservative results compared to fleet crack findings. The application of the tool must be assessed on a case-by-case basis depending on the available data. The application of PRA is challenging and it is difficult to establish the reliability of the data and their results with the lack of guidelines regarding PRA. The paper shows a possible application of PRAs using the available data with limited effort in the data gathering process and includes simple ways for the data preparation and application in SMART|DT based on known PRA methodologies.|
|Fulltext version:||Published version|
|License (according to publishing contract):||Licence according to publishing contract|
|Departement:||School of Engineering|
|Organisational Unit:||Centre for Aviation (ZAV)|
|Appears in collections:||Publikationen School of Engineering|
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Guillaume, M., & Ferrari, V. (2023). Practical application of structural risk assessment with SMART DT. 22nd HOLSIP In-Person & Virtual Workshop, Snowbird, USA, 16-19 January 2023.
Guillaume, M. and Ferrari, V. (2023) ‘Practical application of structural risk assessment with SMART DT’, in 22nd HOLSIP In-Person & Virtual Workshop, Snowbird, USA, 16-19 January 2023.
M. Guillaume and V. Ferrari, “Practical application of structural risk assessment with SMART DT,” in 22nd HOLSIP In-Person & Virtual Workshop, Snowbird, USA, 16-19 January 2023, 2023.
Guillaume, Michel, and Viola Ferrari. “Practical Application of Structural Risk Assessment with SMART DT.” 22nd HOLSIP In-Person & Virtual Workshop, Snowbird, USA, 16-19 January 2023, 2023.
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