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PublicationPrecision glass molding process enhancing the expanding of chip-on-tip endoscopes( 2023-06-07)
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PublicationThe digital twin in battery cell production( 2023-01-11)
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PublicationDer Digitale Zwilling in der Batteriezellfertigung( 2023-01-10)
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PublicationResilience in Aviation( 2022-11-14)Pandemic, sustainability and efficiency targets pose ongoing challenges for the aviation industry: It must continue to develop propulsion concepts and tap into new materials and manufacturing processes. Cross-domain digital twins harbor previously untapped potential for mastering growing requirements with the help of digitization, as a practical example from the production of aerospace components shows in the white paper. The trend topic of sustainability drives innovation and complements productivity, quality and costs as criteria for strategic corporate decisions. Awareness of this must be consolidated among personnel, as well as the ability to manage resilient processes. Such processes ensure the successful handling of disruptions. In this way, a disruption can even turn into an opportunity. In the white paper, the Fraunhofer IPT pools its expert knowledge on how the dimensions of "technology", "digitalization", "sustainability" and "employees" can be combined in the context of aviation in order to seize this opportunity.
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PublicationResilienz in der Luftfahrt( 2022-09-16)Pandemie, Nachhaltigkeits- und Effizienzziele stellt fortlaufende Herausforderungen an die Luftfahrtindustrie: Sie muss Antriebstechnologien weiterentwickeln sowie neue Werkstoffe und Fertigungsverfahren erschließen. Domänenübergreifende digitale Zwillinge bergen bisher ungenutzte Potenziale, um wachsende Anforderungen mithilfe von Digitalisierung zu bewältigen, wie ein praxisnahes Beispiel aus der Fertigung von Luftfahrtkomponenten im Whitepaper aufzeigt. Das Trendthema Nachhaltigkeit treibt Innovationen an und ergänzt Produktivität, Qualität und Kosten als Kriterium für strategische Unternehmensentscheidungen. Das Bewusstsein dafür muss sich beim Personal festigen sowie die Fähigkeit, resiliente Prozesse zu bewältigen. Solche Prozesse stellen den erfolgreichen Umgang mit Störungen sicher. So kann sich eine Störung sogar zu einer Chance wandeln. Das Fraunhofer IPT bündelt im Whitepaper sein Expertenwissen, wie sich die Dimensionen »Technologie«, »Digitalisierung«, »Nachhaltigkeit« und »Personal« im Kontext der Luftfahrt verbinden lassen, um diese Chance zu ergreifen.
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PublicationMachinability analysis for milling of additively manufactured Inconel 718 with specifically induced porosity( 2022)Compared to conventional manufacturing technologies, additive manufacturing (AM) offers great design freedom, the integration of functions into components, new lightweight construction concepts and high material efficiency. This technology is increasingly coming into focus in aerospace and turbomachinery engineering, especially the Laser Powder Bed Fusion (LPBF) process. LPBF is already being used for some aerospace components that are often subject to high thermal and mechanical loads. Depending on the component geometry, support structures are required for additive manufacturing, which then have to be removed, usually by machining. Among others, the use of material with specifically induced porosity is suitable as a support structure. This ensures good heat dissipation and thus homogeneous component properties, high retention forces and short process times in the LPBF process. However, the machinability of porous, additively manufactured material has hardly been researched to date. This paper therefore presents the results of machinability investigations with porous, additively manufactured Inconel 718. The investigations included the analysis of active cutting force, cutting tool wear, surface finish and chip geometry in the milling process with tungsten carbide cutting tools. It was found that with the porous material, the dominant type of wear is early starting chipping of the cutting tool edges. The active force decreases with increasing porosity. Partial smearing of the pores was observed on the milled surfaces. The chips of the porous material show a disrupted surface. In future investigations, the aim is to improve the wear behaviour when milling porous Inconel 718.
