Dokument-ID Dokumenttyp Autoren/innen Persönliche Herausgeber/innen Haupttitel Abstract Auflage Verlagsort Verlag Herausgeber (Institution) Erscheinungsjahr Titel des übergeordneten Werkes Jahrgang/Band ISBN Veranstaltung Veranstaltungsort Beginndatum der Veranstaltung Enddatum der Veranstaltung Ausgabe/Heft Erste Seite Letzte Seite URN DOI Lizenz Datum der Freischaltung OPUS4-25986 Zeitschriftenartikel Meyer-Plath, Asmus; Orts Gil, Guillermo; Petrov, Sergej; Oleszak, Franz; Maneck, Heinz-Eberhard; Dörfel, Ilona; Haase, Oskar; Richter, Silke; Mach, Reinhard Plasma-thermal purification and annealing of carbon nanotubes We have developed a very fast and entirely gas-phase based purification technique for carbon nanotubes (CNT) that allows removing metal and metal oxide impurities with high effectiveness. CNT agglomerates from chemical vapor deposition (CVD) synthesis which contained carbon encapsulated catalysts were injected into an atmospheric plasma torch. Very high heating rates allow for quasi-instantaneous vaporization of catalyst particles. This way, metal vapors are hyposized to break mechanically instable encapsulations and effuse from incomplete ones faster than thermally induced graphitization stabilizes such particle encapsulations. The ash content of multi-walled (MW) CNT samples was reduced to less than 15% of the initial value within a few milliseconds. Also the metal content of single-walled (SW) CNT agglomerates was significantly reduced. Repeated injection of CNT agglomerates into the plasma torch resulted in higher-purity products of improved structural integrity and increased oxidation resistance. New York, NY Pergamon Press 2012 Carbon 50 10 3934 3942 10.1016/j.carbon.2012.04.049 2016-02-19 OPUS4-30990 Beitrag zu einem Tagungsband Bartholmai, Matthias; Stoppel, Markus; Petrov, Sergej; Hohendorf, Stefan; Goedecke, Thomas Two application examples of RFID sensor systems - Identification and diagnosis of concrete components and monitoring of dangerous goods transports The combination of radio-frequency identification (RFID) tags with different types of sensors offers excellent potential for applications with regard to identification, diagnosis, and monitoring. This should be demonstrated by means of two examples of actual developments carried out by the Federal Institute for Materials Research and Testing (BAM). The Identification and diagnosis of concrete components is a major task in the maintenance of critical infrastructure, for instance concrete bridges with heavy traffic volume. A feasibility study investigates the application of RFID sensor systems for this task. The second example reviews the transportation of dangerous goods. Using modern technologies enables promising possibilities to reduce accidents and to avoid non-conformity with transportation regulations. Project results demonstrate an innovative technical solution for monitoring of dangerous goods transports with RFID sensor systems. IMEKO - International measurement confederation 2014 13th IMEKO TC10 Workshop on technical diagnostics (Proceedings) 978-92-990073-3-4 13th IMEKO TC10 Workshop on technical diagnostics Warsaw, Poland 26.04.2014 27.06.2014 ID 0019, 111 115 2016-02-20 OPUS4-37653 Zeitschriftenartikel Neumann, Patrick P.; Werner, Klaus-Dieter; Petrov, Sergej; Bartholmai, Matthias; Lazik, D. Puente León, F.; Zagar, B. Aufbau eines großflächigen Testfeldes für verteilte Bodengassensorik und Untersuchung einer Monitoringmethode basierend auf Tomographie A 400 m² soil test field with gas injection system was built up for the purpose of large-scale validation, optimization, and characterization of a novel comprehensive monitoring method for underground gas storage areas. The method combines gas sensing technology with linear form factor for in-situ monitoring of gases in soil with the mapping capabilities of Computed Tomography (CT) to reconstruct time-series of gas distribution maps based on samples of orthogonally-aligned linear gas sensors. Several injection experiments with carbon dioxide (CO2) at different days with varying boundary conditions indicates the potential of the method for, e.g., rapid leakage detection with respect to Carbon Capture and Storage (CCS) issues. Berlin, Deutschland Walter de Gruyter GmbH 2016 tm - Technisches Messen 83 10 606 615 10.1515/teme-2016-0015 2016-10-05 OPUS4-34489 Beitrag zu einem Tagungsband Petrov, Sergej; Neumann, Patrick P.; Werner, Klaus-Dieter; Lazik, D.; Bartholmai, Matthias Concept for investigating mechanical impacts on distributed subsurface gas monitoring A multifunctional sensor in line shape was developed and introduced in previous work for measuring of gas concentrations, temperature change, and strain. A current field study focuses on a spatially distributed monitoring of subsurface CO2 gas storage sites in near real time. Mechanical impacts, e.g., caused by construction work, denudation, and seismic activity, can affect the integrity of underground gas storage sites. Thermal or moisture impacts, e.g., caused by weather conditions, can influence the gas distribution behavior. In this paper, we briefly describe the setup of a CO2 injection soil test field. This setup contains actuating elements for the investigation of mechanical and thermal impacts on distributed subsurface gas monitoring. A concept is given for evaluating these impacts and first experimental results are presented. Zilina Elsevier Science 2015 32nd Danubia-Adria Symposium on advances in experimental mechanics (Proceedings) 3 32nd Danubia-Adria Symposium on advances in experimental mechanics Starý Smokovec, Slovakia 22.09.2015 25.09.2015 4 1124 1128 10.1016/j.matpr.2016.03.060 2016-02-20 OPUS4-34368 Vortrag Petrov, Sergej Concept for investigating mechanical impacts on distributed subsurface gas monitoring 2015 32nd Danubia-Adria Symposium on Advances in Experimental Mechanics 32nd Danubia-Adria Symposium on Advances in Experimental Mechanics Stary Smokovec, Slovakia 2015-09-22 2015-09-25 2016-02-20 OPUS4-33608 Zeitschriftenartikel Bartholmai, Matthias; Stoppel, Markus; Petrov, Sergej; Hohendorf, Stefan; Goedecke, Thomas Two application examples of RFID sensor systems-identification and diagnosis of concrete components and monitoring of dangerous goods transports The combination of RFID tags and energy efficient sensors offers promising potential for identification, diagnosis, and monitoring applications - particularly when it comes to objacts, which require continuous observation and which are difficult to access with conventional tools. This paper presents two examples as an outlook for RFID sensor systems in embedded structures and in mobile applications. Braunschweig 2015 Acta IMEKO 4 2 85 89 2016-02-20 OPUS4-35688 Zeitschriftenartikel Petrov, Sergej; Neumann, Patrick P.; Werner, Klaus-Dieter; Wosniok, Aleksander; Lazik, D.; Bartholmai, Matthias Nicoletto, G.; Pastrama, S.D.; Emri, I. Concept for investigating mechanical and thermal impacts on distributed subsurface gas monitoring A multifunctional sensor in line shape was developed and introduced in previous work for measuring of gas concentrations, temperature change, and strain. A current field study focuses on a spatially distributed monitoring of subsurface CO 2 gas storage sites in near real time. Mechanical impacts, e.g., caused by construction work, denudation, and seismic activity, can affect the integrity of underground gas storage sites. Thermal or moisture impacts, e.g., caused by weather conditions, can influence the gas Distribution behavior. In this paper, we briefly describe the setup of a CO 2 injection soil test field. This setup contains actuating elements for the investigation of mechanical and thermal impacts on distributed subsurface gas monitoring. A concept is given for evaluating these impacts and first experimental results are presented. Elsevier Ltd. 2016 Materials Today: Proceedings 3 32nd DANUBIA ADRIA SYMPOSIUM on Advances in Experimental Mechanics Starý Smokovec, Slovakia 22.09.2015 25.09.2015 4 1124 1128 10.1016/j.matpr.2016.03.060 2016-04-12 OPUS4-34720 Beitrag zu einem Tagungsband Strangfeld, Christoph; Stoppel, M.; Bartholmai, Matthias; Petrov, Sergej; Fakhouri, A. Embedded RFID-sensors for concrete bridge structures In the near future, it will be important to adopt innovative approaches and technologies in order to further guarantee the reliability and availability of the highway network. New tools are therefore needed in order 'to obtain in-depth information about the condition of bridges and its development early enough before significant, precarious damage cases occur. In 2011, the research program "Intelligente Brücken (Smart Bridges)" was launched by the BASt together with the BMVI to evolve systems for information and holistic evaluation for bridge structures as a supplement to the current inspection-based maintenance management. Several projects dealt with the topic in the last few years and provided guidelines and a solid basis to move towards a first implementation considering the input of all research projects carried out so far. Technische Universität Berlin / Bundesanstalt für Materialforschung und -prüfung 2015 NDT-CE 2015 - International symposium non-destructive testing in civil engineering (Proceedings) NDT-CE 2015 - International symposium non-destructive testing in civil engineering Berlin, Germany 15.09.2015 17.09.2015 P 54, 1061 1063 2016-02-20