Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Bemerkung Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Zugriffsart Link Abteilungen OPUS4-6663 Wissenschaftlicher Artikel Seiler, Friedrich, ; Pichler, Alexander, ; Pfaff, Raphael, pfaff@fh-aachen.de; Srulijes, Julio, Novel processing tools for automated doppler picture velocimetry (DPV) evaluation 2009 14 Journal of visualization Vol. 12 Iss. 4 323 337 bezahl http://dx.doi.org/10.1007/BF03181876 Fachbereich Maschinenbau und Mechatronik OPUS4-6662 Wissenschaftlicher Artikel Pfaff, Raphael, pfaff@fh-aachen.de; Burnham, Keith J., On abstraction and interpretability: a behavioural perspective 2009 7 Systems Science Vol. 35 Iss. 2 19 26 Fachbereich Maschinenbau und Mechatronik OPUS4-10771 Wissenschaftlicher Artikel Pfaff, Raphael, pfaff@fh-aachen.de Braking distance prediction for vehicle consist in low-speed on-sight operation: a Monte Carlo approach The first and last mile of a railway journey, in both freight and transit applications, constitutes a high effort and is either non-productive (e.g. in the case of depot operations) or highly inefficient (e.g. in industrial railways). These parts are typically managed on-sight, i.e. with no signalling and train protection systems ensuring the freedom of movement. This is possible due to the rather short braking distances of individual vehicles and shunting consists. The present article analyses the braking behaviour of such shunting units. For this purpose, a dedicated model is developed. It is calibrated on published results of brake tests and validated against a high-definition model for low-speed applications. Based on this model, multiple simulations are executed to obtain a Monte Carlo simulation of the resulting braking distances. Based on the distribution properties and established safety levels, the risk of exceeding certain braking distances is evaluated and maximum braking distances are derived. Together with certain parameters of the system, these can serve in the design and safety assessment of driver assistance systems and automation of these processes. SpringerOpen 2023 9 Railway Engineering Science 31 2 135 144 10.1007/s40534-023-00303-7 weltweit https://doi.org/10.1007/s40534-023-00303-7 Fachbereich Maschinenbau und Mechatronik OPUS4-8769 Wissenschaftlicher Artikel Franzen, Julius, ; Pinders, Erik, ; Pfaff, Raphael, pfaff@fh-aachen.de; Enning, Manfred, enning@fh-aachen.de RailCrowd's virtual fleets: Make most of your asset data For smaller railway operators or those with a diverse fleet, it can be difficult to collect sufficient data to improve maintenance programs. At the same time, new rules such as entity in charge of maintenance - ECM - regulations impose an additional workload by requiring a dedicated maintenance management system and specific reports. The RailCrowd platform sets out to facilitate compliance with ECM and similar regulations while at the same time pooling anonymised fleet data across operators to form virtual fleets, providing greater data insights. Berlin Bahn-Fachverlag 2018 2 Deine Bahn 9 11 13 bezahl https://www.system-bahn.net/archiv/railcrowds-virtual-fleets-make-most-of-your-asset-data/ Fachbereich Maschinenbau und Mechatronik OPUS4-9954 Wissenschaftlicher Artikel Pfaff, Raphael, pfaff@fh-aachen.de; Enning, Manfred, enning@fh-aachen.de; Sutter, Stefan, A risk‑based approach to automatic brake tests for rail freight service: incident analysis and realisation concept This study reviews the practice of brake tests in freight railways, which is time consuming and not suitable to detect certain failure types. Public incident reports are analysed to derive a reasonable brake test hardware and communication architecture, which aims to provide automatic brake tests at lower cost than current solutions. The proposed solutions relies exclusively on brake pipe and brake cylinder pressure sensors, a brake release position switch as well as radio communication via standard protocols. The approach is embedded in the Wagon 4.0 concept, which is a holistic approach to a smart freight wagon. The reduction of manual processes yields a strong incentive due to high savings in manual labour and increased productivity. Cham Springer 2022 13 SN Applied Sciences 4 Corresponding author: Raphael Pfaff 4 1 14 10.1007/s42452-022-05007-x weltweit https://doi.org/10.1007/s42452-022-05007-x Fachbereich Maschinenbau und Mechatronik