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Tape surfaces characterization with persistence images

1 PIMM & ESI Group International Chair, Arts et Metiers Institute of Technology, 151 boulevard de l‘Hôpital, 75013 Paris, France
2 PIMM, Arts et Metiers Institute of Technology, 151 boulevard de l‘Hôpital, 75013 Paris, France
3 ESI-CEU International Chair, Universidad Cardenal Herrera-CEU, San Bartolome 55, 46115 Alfara del Patriarca, Valencia, Spain
4 Universite de Pau et des Pays de l‘Adour, E2S UPPA, CNRS, IPREM, Pau, France

Topical Section: Thin films, surfaces and interfaces

The aim of this paper is to leverage the main surface topological descriptors to classify tape surface profiles, through the modelling of the evolution of the degree of intimate contact along the consolidation of pre-impregnated preforms associated to a composite forming process. It is well-known at an experimental level that the consolidation degree strongly depends on the surface characteristics (roughness). In particular, same process parameters applied to different surfaces produce very different degrees of intimate contact. It allows us to think that the surface topology plays an important role along this process. However, solving the physics-based models for simulating the roughness squeezing occurring at the tapes interface represents a computational effort incompatible with online process control purposes. An alternative approach consists of taking a population of different tapes, with different surfaces, and simulating the consolidation for evaluating for each one the progression of the degree of intimate contact –DIC– while compressing the heated tapes, until reaching its final value at the end of the compression. The final goal is creating a regression able to assign a final value of the DIC to any surface, enabling online process control. The main issue of such an approach is the rough surface description, that is, the most precise and compact way of describing it from some appropriate parameters easy to extract experimentally, to be included in the just referred regression. In the present paper we consider a novel, powerful and very promising technique based on the topological data analysis –TDA– that considers an adequate metrics to describe, compare and classify rough surfaces.
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© 2020 the Author(s), licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (http://creativecommons.org/licenses/by/4.0)

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