Structural assessment of aerospace components using image processing algorithms and Finite Element models

Dimtrios Stamatelos, Vassilios Kappatos

Publikation: Kapitel i bog/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review


Purpose – This paper presents the development of an advanced structural assessment approach for aerospace components (metallic and composites). This work focuses on developing an automatic image processing methodology based on Non Destructive Testing (NDT) data and numerical models, for predicting the residual strength of these components.
Design/methodology/approach – An image processing algorithm, based on the threshold method, has been developed to process and quantify the geometric characteristics of damages. Then, a parametric Finite Element (FE) model of the damaged component is developed based on the inputs acquired from the image processing algorithm. The analysis of the metallic structures is employing the Extended FE Method (XFEM), while for the composite structures the Cohesive Zone Model (CZM) technique with Progressive Damage Modelling (PDM) is used.
Findings – The numerical analyses of the damaged plates showed that strength reduction occurs compare to reference plates. This methodology is a promising method for structural assessment of aerospace components, since conclusions regarding their functionality can be drawn.
Research limitations/implications – The investigated structural component is a portion of skin structure and hence the geometries are limited to flat and curved plates, while the examined loading cases are tension and compression.
Practical implications – There is a huge industrial and innovative need for more efficient and reliable damage inspection, as well as for reducing the time and cost of aircraft infrastructure maintenance.
Social implications – Improvement of structural maintenance efficiency will ensure not only the safe air transport of citizens, goods and military operations but will also promote the sustainable growth of the fastest mean of transport in a tough economic area.
Originality/value – As far as it is known, this is the first time that an aerospace structural assessment combines image processing algorithms and FE models.
TitelProceedings of the 12th International Aerospace Supply Fair
Publikationsdato24. okt. 2017
StatusUdgivet - 24. okt. 2017
Begivenhed12th International Aerospace Supply Fair, 12th AIRTEC - AeroExpoPark, Munich, Tyskland
Varighed: 24. okt. 201726. okt. 2017


Konference12th International Aerospace Supply Fair, 12th AIRTEC

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