9 research outputs found

    Die Erstellung eines Corporate-Identity-Konzeptes : am Beispiel UHC Sparkasse Weißenfels e.V.

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    Ziel der Diplomarbeit ist es, eine einheitliche Vereinsdarstellung nach innen sowie nach außen zu formulieren – Erstellung eines Corporate Identity Konzeptes am Beispiel des UHC Sparkasse Weißenfels. Angesichts der Fülle von Botschaften, die täglich und ständig auf einen Menschen einwirken, haben nur diese Informationen eine Chance, die einheitlich und klar verständlich und nützlich an den „Mann“ gebracht werden. In Bezug auf diese Tatsache werden zunächst theoretische Grundlagen geschaffen um die Vielfältigkeit und Breite einer CI aufzuzeigen. Danach folgen weitere zweckdienliche Angaben über den eigentlichen Sport sowie zum Verein. Im Praxisteil reihen sich verschiedene Methoden aneinander, die das identifizieren des aktuellen Vereinsimages zum Ziel haben. Zum Schluss erfolgt die Beschreibung und Auswertung der Informationen sowie Empfehlungen für die Umsetzung einer Corporate Identity

    Total Quality Management im Krankenhauswesen : eine theoretische Betrachtung unter besonderer Beachtung der Implementierung des TQM´s

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    Qualitätsmanagementaufgaben gehören schon seit langem in vielen Organisationen zum täglichen Ablauf dazu. So auch in Einrichtungen des Gesundheitswesens, welche eine besondere Art von Dienstleistung an einer speziellen Form von Kunden vollziehen. Die Bedeutung von Qualität in Krankenhäusern sowie der Hygiene während des Behandlungsprozesses ist unumstritten. Eine so umfangreiche Institution wie es das Krankenhaus darstellt, benötigt ein allumfassendes Qualitätsmanagement. Ziel dieser Diplomarbeit soll es demnach sein, zu klären, wie man ein so umfangreiches Qualitätsmanagementsystem, wie es das TQM darstellt, theoretisch in deutsche Krankenhäuser implementieren kann. Nach der Betrachtung des aktuellen Standes unseres Gesundheitswesens sowie der Krankenhaussituation in Deutschland, werden Grundlagen zu Qualität und TQM erstellt. Anschließend erfolgt die theoretische Erörterung der Implementierung des Systems an Hand des EFQM-Modells in Krankenhäuser - damit der Hauptzweck - nämlich die ständige Verbesserung der Qualität in allen Ebenen erreicht werden kann. Zum Abschluss werden Kritikpunkte und Probleme bei der Implementierung des Modells aufgezeigt, sowie Lösungen zur Akzeptanzverbesserungen genannt

    Additive manufacturing with high-performance materials and light-weight structures by laser metal deposition and laser infiltration: Blog Beitrag

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    In laser metal deposition, parts are generated by use of a large variety of different alloys in industrial fields such as aviation, energy, tooling or medical technology. Due to permanently increasing requirements (e. g. enhanced system efficiencies or environmental standards) in almost all fields of applications the use of very high-performance materials, which unfortunately tend to have a high crack-sensitivity, is more and more required. In addition the placement of metallic materials on composite structures (e. g. CFRP) is a challenging but interesting material combination due to the light weight of the resulting structure. In this paper, processing of these material combinations is discussed and examples of (potential) applications are shown

    A novel local shielding approach for the laser welding based additive manufacturing of large structural space components from titanium: Paper presented at ICALEO 2019, International Congress on Applications of Lasers and Electro-Optics, October 7-10, 2019, Orlando, Florida

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    The Advanced Telescope for High-ENergy Astrophysics (ATHENA) will observe ‘the hot and energetic universe’, which was determined one of the most urgent scientific topics for a major future space mission by The European Space Agency (ESA). One of its three main components is the optical bench, a monolithic titanium structure that accommodates 678 mirror modules and has to keep them accurately aligned. The immense but slender structure in the range of a 2.5 to 3 m diameter at a height of 300 mm proves a challenge to manufacturing. A hybrid robot cell is developed using additive build up via laser welding, combined with high-performance machining and state of the art process and metrology monitoring and control. The present work focuses on the shielding of the laser induced melt-pool, a key concern when processing titanium. The sensitive metal with unusual low heat conductivity requires a large area of high purity atmosphere to prevent embrittlement. However, the large hybrid system prohibits the use of a sealed enclosure and therefore a local shielding system is developed for the challenging case of the ATHENA optical bench’s hollow-chamber design. As the thin wall design poses a worst-case scenario in terms of heat dissipation and shielding flow, the effectiveness of the system can be applied to the flexibility of lot size one as well. The key features of the novel approach are the prevention of turbulence while keeping operation economical despite the large shielding area. The first is achieved by means of an integrated honeycomb screen, the latter by employing a layered flow with a higher velocity outer curtain and an air deflecting co-flow. This system was numerically optimized, tested and the effectiveness proven by means of visual inspection, microstructural analysis and measurement of material properties

    Additive manufacturing of powdery Ni-based superalloys Mar-M-247 and CM 247 LC in hybrid laser metal deposition

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    The present paper addresses the phenomena of hot cracking of nickel-based superalloys in the perspective of hybrid Laser Metal Deposition (combined application of induction and laser). This includes an extract of relevant theoretical considerations and the deduction of the tailored approach which interlinks material–scientific aspects with state-of-the-art manufacturing engineering. The experimental part reflects the entire process chain covering the manufacturing strategy, important process parameters, the profound analysis of the used materials, the gradual process development, and the corresponding hybrid manufacture of parts. Furthermore, hot isostatic pressing and thermal treatment are addressed as well as tensile testing at elevated temperatures. Further investigations include X-ray CT measurements, electron backscattered diffraction (EBSD), and scanning electron microscopy (SEM) as well as light optical microscope evaluation. The fundamental results prove the reliable processibility of the high-performance alloys Mar-M-247 and Alloy 247 LC and describe in detail the process inherent microstructure. This includes the grain size and orientation as well as the investigation of size, shape, and distribution of the γ′ precipitates and carbides. Based on these findings, the manufacturing of more complex demonstrator parts with representative dimensions is addressed as well. This includes the selection of a typical application, the transfer of the strategy, as well as the proof of concept

    Intrinsic heat treatment within additive manufacturing of gamma titanium aluminide space hardware

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    A major part of laser additive manufacturing focuses on the fabrication of metallic parts for applications in the space and aerospace sectors. Especially, the processing of the very brittle titanium aluminides can be particularly challenging because of their distinct tendency to lamellar interface cracking. In the present paper, a gamma titanium aluminide (γ-TiAl) nozzle, manufactured via electron beam melting, is extended and adapted via hybrid laser metal deposition. The presented example considers a new field of application for this class of materials and approaches the process-specific manipulation of the composition and/or microstructure via the adjustment of processing temperatures, temperature gradients and solidification conditions. Furthermore, intrinsic heat treatment is investigated for electron beam melting and laser metal deposition with powder, and the resulting influence is releated to conventional processing

    Added value by hybrid additive manufacturing and advanced manufacturing approaches

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    In order to lead to a competitive advantage there is the need to carefully consider the pros and cons of state of the art manufacturing techniques. This is frequently carried out in a competitive manner but can also be done in a complementary way. This complementary approach is often used for the processing of difficult-to-machine materials with particular regard to high tech parts or components. Hybrid machining processes (HMPs) or - more general – advanced machining processes (AMPs) can be brought to the point that the results would not be possible with the individual constituent processes in isolation. Hence, the controlled interaction of process mechanisms and/or energy sources is frequently applied for a significant increase of the process performance and will be addressed within the present paper. A via Electron Beam Melting (EBM) manufactured gamma titanium aluminide (γ-TiAl) nozzle is extended and adapted. This is done via hybrid Laser Metal Deposition (LMD). The presented approach considers critical impacts like processing temperatures, temperature gradients and solidification conditions with particular regard to crucial material properties like the phenomena of lamellar interface cracking. Furthermore, selected destructive and non-destructive testing is performed in order to prove the material properties. Finally, the results will be evaluated. This will also be done in the perspective of other applications
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