At IRDL, Ajinkya Pawar has developed foam composites through additive manufacturing for various applications.
Ajinkya Pawar, chercheur·e au sein de IRDL (Institut National Polytechnique de Bretagne).
Thèse soutenue en 2023 à l'école doctorale École doctorale Sciences Pour l'Ingénieur (Lorient ; 2022-....).
Référencée dans le réseau ABES/STAR, cette thèse répond aux critères de rigueur de l'enseignement supérieur français.
Research on foam composites through additive manufacturing is rapidly expanding, and the work of Ajinkya Pawar at IRDL is a perfect example. By focusing on micro-structure control, this thesis paves the way for the automation of sandwich structures, a crucial area for sectors such as aerospace and wind energy. But why is this automation so important? The answer lies in the current complexity of manufacturing processes, which often require manual interventions and costly downtime.
Automation would not only reduce these downtimes but also increase the precision and repeatability of manufacturing processes. In the aerospace sector, for example, every gram counts. A lighter part can improve the energy efficiency of an aircraft, resulting in significant long-term savings. Moreover, in the wind energy field, lighter structures can be more easily transported and installed, reducing logistical costs.
Foam composites, with their adjustable density, offer unprecedented flexibility. For instance, the initial density of 1003 kg/m3 can be reduced to 287 kg/m3, allowing for the design of lightweight structures without compromising strength. This could transform the way we design parts for demanding applications. In the automotive sector, the use of foam composites could enable the creation of safer and more comfortable cabins while reducing the overall weight of the vehicle.
But what about the challenges? Research has highlighted the need to develop optimized printing protocols to avoid clogs in the nozzles, a problem that could hinder large-scale adoption. Clogs can lead to defects in printed parts, compromising their structural integrity. Innovative solutions, such as integrating sensors to monitor the printing process in real-time, could be considered to overcome these obstacles.
It is imperative that industrial players become aware of these advancements. Foam composites could not only reduce production costs but also improve the performance of final products. For example, in the construction sector, the use of these materials could allow for the design of more sustainable buildings capable of withstanding extreme weather conditions. Decision-makers must ask themselves: how can we integrate these innovations into our value chains?
The answer may lie in targeted investments and collaborations between the public and private sectors. Governments could play a key role by supporting research and development in this area, offering grants or tax credits to companies that adopt these technologies. Additionally, partnerships with universities and research centers could foster the exchange of knowledge and expertise.
In summary, the work of Ajinkya Pawar is not just a simple academic advancement. It represents a strategic opportunity for innovation in additive manufacturing and materials engineering. The economic implications are vast, and it is time to act. By integrating these foam composites into our manufacturing processes, we could not only improve our competitiveness in the global market but also contribute to a more sustainable future.
Additive manufacturing, as an emerging technology, has the potential to revolutionize not only the way we produce goods but also the way we design and use materials. In West Africa, for example, the adoption of these technologies could stimulate local innovation, create jobs, and promote economic development. By investing in research on foam composites, we could also position the region as a leader in advanced materials, thereby attracting foreign investments and strengthening our technological autonomy.
Données clés
- 1003 kg/m3 : Densité initiale du filament NFE06 avant traitement thermique.
- 287 kg/m3 : Densité du filament après réduction à 250 °C.
- 4.07 mm : Épaisseur maximale des échantillons imprimés.
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Sources et accès
Ajinkya Pawar. Fabrication of foamed composites processed by additive manufacturing with micro-cellular control for adjustable end-user properties. Materials. Université de Bretagne Sud, 2023. English. ⟨NNT : 2023LORIS654⟩. ⟨tel-05105842⟩