422 Dokumente gefunden

Strategien und Methoden des Robust Designs für den Einsatz in frühen Phasen der Produktentwicklung

Die frühen Phasen der Produktentwicklung spielen eine entscheidende Rolle für den Markterfolg eines Produktes, da sie die grundlegenden Voraussetzungen für den gesamten Lebenszyklus schaffen. In diesem Zusammenhang gewinnt das Konzept des Robust Designs (RD) zunehmend an Bedeutung, da es darauf abzielt,…

Entwerfen Entwickeln Erleben 2024 : Menschen, Technik und Methoden in Produktentwicklung und Design

Die Konferenz Entwerfen Entwickeln Erleben adressiert aktuelle Fragestellungen, Innovationen und Herausforderungen in Produktentwicklung und Design. Die Themen virtuelle Entwicklung und menschzentriertes Design bilden die Klammer, um aktuelle Forschung aus verschiedenen Wissenschaftsbereichen und relevante…

Wissensbasiertes und kollaboratives Systems Engineering mechatronischer Produkte

Model-Based Systems Engineering (MBSE) gewinnt bei der Entwicklung komplexer mechatronischer Produkte zunehmend an Bedeutung. Zur effizienten Wiederverwendung von vorhandenem Wissen in der Entwicklung können MBSE-Modelle mit Wissensrepräsentationen, wie z.B. Wissensgraphen, gekoppelt werden. Dazu müssen…

APP-CEP: adaptive pattern-level privacy protection in complex event processing systems

Although privacy-preserving mechanisms endeavor to safeguard sensitive information at the attribute level, detected event patterns can still disclose privacy-sensitive knowledge in distributed complex event processing systems (DCEP). Events might not be inherently sensitive, but their aggregation into…
Setúbal: SCITEPRESS, 2024

A composition algebra for decentralized enforcement of access control policies with an application to vehicular networks

Highly volatile and open distributed systems typically incorporate a significant amount of secure interactions between autonomous agents. This is especially true for vehicular networks, where smart or autonomous vehicles rely on information shared with each other or traffic infrastructure. However, controlling…
Setúbal: SciTePress - Science and Technology Publications, Lda., 2024

Studies on the hysteresis of trunk muscles-Muscular specificities must be taken into account

Hysteresis refers to a physical phenomenon in which the response or state of a system depends on both the input variable and its history. Hysteresis phenomena are also observed in biological systems and have been described for the sensorimotor system. The aim of the present study was to determine whether…
Lawrence, Kanada / San Francisco, Calif.: Public Library of Science (PLoS), 2024

Surface modification of nanodiamonds for organic solar cell applications

This thesis is focused on the utilization of the surface functionalization and optical properties of HPHT NDs for an application as charge extraction material in OSCs. The investigations focus on three main aspects: (1) The procedure for modification of the surface termination of a commercially available…

An analysis and simulation framework for systems with classification components

Machine learning solutions are becoming more widespread as they can solve some classes of problems better than traditional software. Hence, industries look forward to integrating this new technology into their products and workflows. However, this calls for new models and analysis concepts in systems…
Setúbal: SCITEPRESS - Science and Technology Publications, 2024

Reducing capillary depth fluctuations in high-speed laser welding of stainless steel using multi-core laser technology

Laser welding was carried out in AISI304 (X5CrNi18-10) stainless steel using a multi-core fiber laser. High-speed X-ray imaging was used to monitor the process. When employing core-power only (400W) at high welding speeds (12m/min), the capillary depth was found to be inconsistent. The capillary penetration…
Amsterdam: Elsevier, 2024

Insight into keyhole and melt pool dynamics in laser welding of zinc-coated steels by means of high-speed synchrotron X-ray…

Laser welding zinc-coated steels is of major importance in automotive engineering and other industries to ensure cost-effective corrosion resistance of assemblies without requiring post-weld rework. However, the low evaporation temperature of zinc is causing welding defects, in particular melt ejections…
Amsterdam: Elsevier, 2024

Investigation on indirect laser welding of copper to aluminum

Laser beam welding of aluminum (Al) to copper (Cu) is challenging due to the formation of intermetallic compounds that are brittle and have high resistivities. However, the Cu/Al phase diagram shows a region were solubility of Cu in Al is present and, on the other hand, a region with the formation of…
Amsterdam: Elsevier, 2024

Effect of concentric intensity distributions on spatter formation in full penetration welding of high-Alloy steels

Welding of high-Alloy steels results in spatter formation addressing high welding speeds above 8 m/min, i.e., the seam quality is significantly reduced due to material losses and adhering spatter. A reduction of spatter can be addressed by using concentric intensity distributions consisting of core and…
Amsterdam: Elsevier, 2024

Optical strain measurements during pulsed laser beam welding to improve the understanding of hot crack formation of EN AW-6082…

E-mobility turned in the last years to be an emerging market and one solution to fossil fuel free mobility for the future. E-mobility requires, compared to fossil-fueled mobility concepts, a huge amount of welding tasks, which have to guarantee different functionality, as for example high strength, ductility,…
Amsterdam: Elsevier, 2024

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