Andreas Gebhardt
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View article: Towards sustainability in the aerospace industry: Environmental impact of different drilling strategies for CFRP/Aluminium stacks
Towards sustainability in the aerospace industry: Environmental impact of different drilling strategies for CFRP/Aluminium stacks Open
View article: Empfehlungen zu Trainingskursen in der Bronchoskopie – Update 2024
Empfehlungen zu Trainingskursen in der Bronchoskopie – Update 2024 Open
Zusammenfassung Bronchoskopiekurse sollten einen festen Bestandteil der bronchoskopischen Ausbildung darstellen. Kursabsolventen sollen nach dem Bronchoskopiekurs mit den Indikationsfeldern, Voraussetzungen und technischen Möglichkeiten de…
View article: Improving Re-Identification by Estimating and Utilizing Diverse Uncertainty Types for Embeddings
Improving Re-Identification by Estimating and Utilizing Diverse Uncertainty Types for Embeddings Open
In most re-identification approaches, embedding vectors are compared to identify the best match for a given query. However, this comparison does not take into account whether the encoded information in the embedding vectors was extracted r…
View article: Automated Disassembly of Battery Systems to Battery Modules
Automated Disassembly of Battery Systems to Battery Modules Open
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View article: Assessment of efficacy and safety of endoscopic lung volume reduction with one-way valves in patients with a very low FEV<sub>1</sub>
Assessment of efficacy and safety of endoscopic lung volume reduction with one-way valves in patients with a very low FEV<sub>1</sub> Open
Introduction Endoscopic lung volume reduction (ELVR) with one-way valves produces beneficial outcomes in patients with severe emphysema. Evidence on the efficacy remains unclear in patients with a very low forced expiratory volume in 1 s (…
View article: Diffuse Alveolar Hemorrhage Associated with Epithelioid Angiosarcoma of the Lung: A Challenging Diagnosis
Diffuse Alveolar Hemorrhage Associated with Epithelioid Angiosarcoma of the Lung: A Challenging Diagnosis Open
A 68-year-old patient presented with persistent hemoptysis and weight loss. A CT scan showing diffuse bilateral ground-glass opacities and nodules was followed by bronchoscopy. While diffuse alveolar hemorrhage (DAH) could be seen, specime…
View article: Endoscopic Lung Volume Reduction with One-Way Valves in Patients with Severe Chronic Obstructive Pulmonary Disease with Hypercapnia
Endoscopic Lung Volume Reduction with One-Way Valves in Patients with Severe Chronic Obstructive Pulmonary Disease with Hypercapnia Open
Background: Robust clinical evidence on the efficacy and safety of endoscopic lung volume reduction (ELVR) with one-way valves in patients with severe lung emphysema with chronic hypercapnic respiratory failure is lacking.
View article: WELDING OF ADDITIVE MANUFACTURED ALSI10MG: USING LASER WELDING IN A VACUUM FOR HIGH QUALITY WELD SEAMS — A NEW APPROACH TO WELDING LPBF MANUFACTURED ALSI10MG
WELDING OF ADDITIVE MANUFACTURED ALSI10MG: USING LASER WELDING IN A VACUUM FOR HIGH QUALITY WELD SEAMS — A NEW APPROACH TO WELDING LPBF MANUFACTURED ALSI10MG Open
Metal additive manufacturing has evolved to a manufacturing process used in different industries. Especially in highly complex applications with small batches, such as aerospace or tooling, laser powder bed fusion (LPBF) has become establi…
View article: Alignment turning and assembly of the Sentinel 4 optical modules
Alignment turning and assembly of the Sentinel 4 optical modules Open
Centering and positioning of the single optical elements within a lens system are essential for the quality of high precision optics. The positioning of the lenses have to be long term stable and shall withstand space environment to keep t…
View article: The high precision double slit device of the slit assembly for the FLEX instrument
The high precision double slit device of the slit assembly for the FLEX instrument Open
The high precision Slit Assembly is a key component of the FLEX instrument. Two different input beams for the Low- and the High-resolution spectrometer, respectively, will be generated by the Slit assembly. The paper presents design and im…
View article: Integrated Machining, Quality Inspection and Sealing for CFRP Components
Integrated Machining, Quality Inspection and Sealing for CFRP Components Open
View article: Endoscopic lung volume reduction with endobronchial valves in very low<i>D</i><sub>LCO</sub>patients: results from the German Registry – Lungenemphysemregister e.V.
Endoscopic lung volume reduction with endobronchial valves in very low<i>D</i><sub>LCO</sub>patients: results from the German Registry – Lungenemphysemregister e.V. Open
Background Endoscopic lung volume reduction (ELVR) with valves has been suggested to be the key strategy for patients with severe emphysema and concomitant low diffusing capacity of the lung for carbon monoxide ( D LCO ). However, robust e…
View article: 1D to 3D multi-stable architectedmaterials with zero Poisson's ratio and controllable thermal expansion
1D to 3D multi-stable architectedmaterials with zero Poisson's ratio and controllable thermal expansion Open
Multi-stable mechanicalmetamaterialswith unprecedentedmechanical/physical properties have attracted great interests due to their functional applications for advanced materials and devices. However, the original curved/ tilted bistable snap…
View article: Effective Optical System Assembly Using Ultra-Precise Manufactured References
Effective Optical System Assembly Using Ultra-Precise Manufactured References Open
The present work demonstrates that exactly manufactured references for joining, mounting, and metrology purposes are crucial in the effective assembly of high-quality optical systems. Based on the alignment turning of spherical and aspheri…
View article: Improving the Mechanical Strength of Dental Applications and Lattice Structures SLM Processed
Improving the Mechanical Strength of Dental Applications and Lattice Structures SLM Processed Open
To manufacture custom medical parts or scaffolds with reduced defects and high mechanical characteristics, new research on optimizing the selective laser melting (SLM) parameters are needed. In this work, a biocompatible powder, 316L stain…
View article: Einsatz von Industrierobotern in der Zerspanung/Use of industrial robots in machining - metrological investigation on how the radial depth of cut influences the machining accuracy in robot-guided machining
Einsatz von Industrierobotern in der Zerspanung/Use of industrial robots in machining - metrological investigation on how the radial depth of cut influences the machining accuracy in robot-guided machining Open
Der zunehmende Einsatz von Industrierobotern in der Zerspanung setzt eine deutliche Erhöhung der Bearbeitungsgenauigkeit voraus. Dies bedingt aufgrund der Steifigkeitseigenschaften von Robotern eine Optimierung der Bearbeitungsstrategien u…
View article: Integration and testing of an imaging spectrometer for earth observation
Integration and testing of an imaging spectrometer for earth observation Open
The DLR Earth Sensing Imaging Spectrometer (DESIS) is a space-based hyperspectral instrument developed by Deutsches Zentrum für Luft-und Raumfahrt (DLR). The optical system of the spectrometer was fabricated and prealigned by the Fraunhofe…
View article: Challenges of additive manufacturing in production systems
Challenges of additive manufacturing in production systems Open
Additive Manufacturing (AM) has become indispensable in the context of digitalization and Industry 4.0 and is said to be a mega trend of the 21st century. The technology offers immense opportunities to revolutionize the production of parts…
View article: Laser Powder Bed Fusion of Magnesium Alloys
Laser Powder Bed Fusion of Magnesium Alloys Open
The additive manufacturing process laser powder bed fusion (LPBF) is increasingly used in industrial series production. Compared to other production technologies, LPBF lacks the range of commercially available materials. Magnesium alloys r…
View article: Machbarkeitsstudie zur Verarbeitung von nicht rostendem Stahl 1.4404 unter Verwendung einer Diodenlaser-basierten LPBF-Maschine mit kartesischem Achssystem
Machbarkeitsstudie zur Verarbeitung von nicht rostendem Stahl 1.4404 unter Verwendung einer Diodenlaser-basierten LPBF-Maschine mit kartesischem Achssystem Open
RTejournal - Fachforum fur Rapid Technologien, Vol. 2018, Iss. 1 - Machbarkeitsstudie an einer neu entwickelten LPBF-Maschine unter Verwendung eines Diodenlasers und kartesischen Achssystemen. Ziel der Untersuchung ist es, die Eignung eine…
View article: MERTIS: the thermal infrared imaging spectrometer onboard of the Mercury Planetary Orbiter
MERTIS: the thermal infrared imaging spectrometer onboard of the Mercury Planetary Orbiter Open
The MERTIS instrument is a thermal infrared imaging spectrometer onboard of ESA’s cornerstone mission BepiColombo to Mercury. MERTIS has four goals: the study of Mercury’s surface composition, identification of rock-forming minerals, mappi…
View article: Athermal metal optics made of nickel plated AlSi40
Athermal metal optics made of nickel plated AlSi40 Open
Metal optics is an inherent part of space instrumentation for years. Diamond turned aluminum (Al6061) mirrors are widely used for application in the mid- and near-infrared (mid-IR and NIR, respectively) spectral range. Aluminum mirrors pla…
View article: Basic research on lattice structures focused on the reliance of the cross sectional area and additional coatings
Basic research on lattice structures focused on the reliance of the cross sectional area and additional coatings Open
\nThis scientific survey is about periodic lattice structures which are made by Selective Laser Melting (SLM). Selective laser melting is based on Additive Manufacturing. The increased use and increasing demand of lattice structures in dif…
View article: Selective laser melting of glass powders
Selective laser melting of glass powders Open
Glass material is extensively utilized in various industrial fields due to its unique properties such as high melting temperature, transparency, as well as high compression strength; however, conventional glass production processes are not…
View article: Education packed in technology to promote innovations: Teaching Additive Manufacturing based on a rolling Lab
Education packed in technology to promote innovations: Teaching Additive Manufacturing based on a rolling Lab Open
\n3D Printing is about to revolutionize the way we design and produce future products. This causes not just immense research and development activities worldwide but requires intensive education and training efforts. As 3D Printing is an i…
View article: Basic design rules of unit cells for additive manufactured lattice structures
Basic design rules of unit cells for additive manufactured lattice structures Open
Additive Manufacturing is a cutting-edge technology for the production of complex, functional, filigree and topology-optimized components. The growing demand for high-tech light-weight structures increasingly requires support in the design…
View article: Additive Fertigungsverfahren
Additive Fertigungsverfahren Open
You have accessAdditive FertigungsverfahrenOct 2016Additive FertigungsverfahrenAndreas GebhardtAndreas GebhardtSearch for more papers by this authorhttps://doi.org/10.3139/9783446445390.fmSectionsAboutPDF ToolsAdd to FavoritesDownload Cita…
View article: Basic Research on Lattice Structures Focused on the Strut Shape and Welding Beads
Basic Research on Lattice Structures Focused on the Strut Shape and Welding Beads Open
This survey is about the requirements of lattice structures which are made by Selective Laser Melting. The process is based on Additive Manufacturing. It allows the generation of almost every shape. Even complex lattice structures can be m…