On the Effects of Modeling As-Manufactured Geometry: Toward Digital Twin

Abstract EN

A simple, nonstandardized material test specimen, which fails along one of two different likely crack paths, is considered herein.

The result of deviations in geometry on the order of tenths of a millimeter, this ambiguity in crack path motivates the consideration of as-manufactured component geometry in the design, assessment, and certification of structural systems.

Herein, finite element models of as-manufactured specimens are generated and subsequently analyzed to resolve the crack-path ambiguity.

The consequence and benefit of such a “personalized” methodology is the prediction of a crack path for each specimen based on its as-manufactured geometry, rather than a distribution of possible specimen geometries or nominal geometry.

The consideration of as-manufactured characteristics is central to the Digital Twin concept.

Therefore, this work is also intended to motivate its development.