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Proposition d'une stratégie soutenable pour donner une nouvelle vie à une pièce en s’appuyant sur les techniques de fabrication additive

Van-Thao Le 1
1 G-SCOP_CPP [2016-2019] - Conception Produit Process [2016-2019]
G-SCOP - Laboratoire des sciences pour la conception, l'optimisation et la production
Abstract : Currently, materials collected from end-of-life (EoL) products are recycled into raw material for reusing in a new production cycle. However, energy consumptions of recycling sectors remain important. The added values and energy used in the manufacture of original parts are also lost during the material recycling process. Nowadays, additive manufacturing techniques are sufficiently efficient and allow the manufacture of products with a material compatible with the use. Taking into account the performances of these techniques in a sustainable strategy can open the ways to modify parts and reuse them directly without returning to the raw material level. This thesis aims to develop a sustainable strategy, which allows giving a new life to an EoL part (or an existing part) by transforming it directly into a new part intended for another product. In order to develop such a strategy, the works of the thesis aims to solve the following scientific issues : the first scientific issue is related to the technological feasibility : is it possible to deposit material on an existing part using additive manufacturing technologies to obtain the new part with good material health ? This question is solved by carrying out an experimental study on the observation of microstructures and mechanical properties of the samples, which are manufactured by adding new features into an existing part in EBM. The second scientific issue is related to the study of the complete manufacturing chain from a technological point of view. How to design the process planning for additive and subtractive manufacturing combination to manufacture the expected part from the existing part ? To solve this question, a methodology to design the process planning for combining these manufacturing processes has been proposed based on the concept of additive manufacturing and machining features.The third scientific issue is linked to the sustainability and does the new strategy have advantages in comparison to the conventional strategy in terms of sustainability ? An approach based on the Life Cycle Assessment (LCA) method has also been developed to assess environmental impacts. The criteria for qualifying the domain of the proposed strategy vis-a-vis the conventional strategy were also identified
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Submitted on : Friday, January 26, 2018 - 2:31:07 PM
Last modification on : Wednesday, October 14, 2020 - 4:19:12 AM
Long-term archiving on: : Friday, May 25, 2018 - 2:29:24 PM


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  • HAL Id : tel-01623987, version 2



Van-Thao Le. Proposition d'une stratégie soutenable pour donner une nouvelle vie à une pièce en s’appuyant sur les techniques de fabrication additive. Génie des procédés. Université Grenoble Alpes, 2017. Français. ⟨NNT : 2017GREAI038⟩. ⟨tel-01623987v2⟩



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