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 OPUS4-30727 Beitrag zu einem Tagungsband Lazik, D.; Ebert, Sebastian; Neumann, Patrick P.; Bartholmai, Matthias Pipeline monitoring with linear gas sensors Comprehensive monitoring of pipelines over their full length is technically difficult and expensive. Considering a cost-benefit ratio it is reasonable to implement monitoring solutions in pipeline segments, which bear a high risk potential, like residential areas, construction sites, slopes, street or river crossings. Still such segments can measure up to several hundred meters in length, demanding for monitoring solutions that extend along such distances and enable fast response. Point wise sensing and periodical surveillance have clear drawbacks, particularly regarding early damage detection. Fibre optic sensors enable distributed sensing of temperature and strain, but they offer very limited possibilities for measuring gas concentrations. Linear membrane-based gas sensors enable the monitoring of gas concentrations alongside a pipeline. Such line-sensors are implemented in form of flexible tubes and can be arranged inside or outside the pipeline (also underwater or within the subsurface), corresponding to the technical requirements. The measuring method combines the gas specific diffusion rates through a membrane with Dalton's law of partial pressures and enables the calculation of gas concentrations or the detection of a change of the gas composition. The objective is to detect gas leakages fast and with high reliability. Furthermore, the calibrated system enables to estimate the spatial extent of a leakage. So far the gas concentration measurement is tested for oxygen, carbon dioxide, methane; further gases should follow, e.g. hydrogen, carbon monoxide or mixtures like natural gas. The paper introduces in the different operating modes of line-sensors. A near real-time approach will be demonstrated to quantify the impact of a gas leak on the near environment. This approach is based on a critical length describing the expansion of the leaking gas. 2014 9th Pipeline technology conference 2014 (Proceedings) 9th Pipeline technology conference 2014 Berlin, Germany 12.05.2014 14.05.2014 1 9 2016-02-20 OPUS4-30735 Vortrag Bartholmai, Matthias Pipeline Monitoring with Linear Gas Sensors 2014 9th Pipeline Technology Conference 2014 9th Pipeline Technology Conference 2014 Berlin, Germany 2014-05-12 2014-05-14 2016-02-20 OPUS4-32083 Beitrag zu einem Tagungsband Bartholmai, Matthias; Neumann, Patrick P.; Werner, Klaus-Dieter; Ebert, Sebastian; Lazik, D. Linear sensor for areal subsurface gas monitoring - calibration routine and validation experiments Membrane based linear gas sensors and fiber optical sensors feature similar geometries and complement each other in quantities to be measured. To the author's best knowledge, it is the first time that these sensors are combined to a multifunctional sensor for distributed measuring of gas concentrations, temperature, and strain. Objective is a comprehensive monitoring of underground gas storage areas. In the presented project a 400 m² test site and a corresponding laboratory system were just built up to characterize, validate, and optimize the combined sensor. Application of the sensor lines in a grid structure should enable spatial resolution of the measurement data and early detection of relevant events, as gas leakage, temperature change, or mechanical impact. A Calibration routine was developed which can be applied subsequent to underground installation. First measurement results indicate the potential of the method, with regard to highly topical energy transport and storage issues. Institute of Electrical and Electronics Engineers (IEEE) 2014 IEEE Sensors 2014 conference (Proceedings) 978-1-4799-0161-6 IEEE Sensors 2014 conference Valencia, Spain 02.11.2014 05.11.2014 942 945 10.1109/ICSENS.2014.6985157 2016-02-20 OPUS4-32043 Vortrag Bartholmai, Matthias Linear Sensor for Areal Subsurface Gas Monitoring - Calibration Routine and Validation Experiments 2014 IEEE Sensors 2014 IEEE Sensors 2014 Valencia, Spain 2014-11-03 2014-11-05 2016-02-20 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 OPUS4-30859 Beitrag zu einem Tagungsband Bartholmai, Matthias; Werner, Klaus-Dieter; Kammermeier, Michael; Köppe, Tabea Multichannel measuring of strain and acceleration during high impact drop tests with a single cable system Multichannel measuring systems are used to measure strains and accelerations during drop tests of containments for dangerous goods. Conventional systems require cabling of each sensor and co-falling of the cable harness, causing problems in the test preparation and execution. Promising results of a single cable measuring system, consisting of measuring modules with data bus connection and local data acquisition were obtained in laboratory investigations and full-scale drop tests. VDE Verlag GmbH Informationstechnische Gesellschaft im VDE (ITG); VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik (GMA) 2014 Sensoren und Messsysteme 2014 - 17. ITG/GMA-Fachtagung 250 978-3-8007-3622-5 Sensoren und Messsysteme 2014 - 17. ITG/GMA-Fachtagung Nürnberg, Germany 03.06.2014 04.06.2014 Article 66, 1 5 2016-02-20 OPUS4-30931 Posterpräsentation Bartholmai, Matthias Two Application Examples of RFID Sensor Systems - Identification and Diagnosis of Concrete Components and Monitoring of Dangerous Goods Transports 2014 13th IMEKO TC10 Workshop on Technical Diagnostics 13th IMEKO TC10 Workshop on Technical Diagnostics Warsaw, Poland 2014-06-26 2014-06-27 2016-02-20 OPUS4-31525 Zeitschriftenartikel Neumann, Patrick P.; Schnürmacher, M.; Bennetts, V.H.; Lilienthal, A.J.; Bartholmai, Matthias; Schiller, J.H. A probabilistic gas patch path prediction approach for airborne gas source localization in non-uniform wind fields In this paper, we show that a micro unmanned aerial vehicle (UAV) equipped with commercially available gas sensors can address environmental monitoring and gas source localization (GSL) tasks. To account for the challenges of gas sensing under real-world conditions, we present a probabilistic approach to GSL that is based on a particle filter (PF). Simulation and real-world experiments demonstrate the suitability of this algorithm for micro UAV platforms. Stevenson Ranch, CA, USA American Scientific Publishers (ASP) 2014 Sensor letters 12 6/7 1113 1118 10.1166/sl.2014.3168 2016-02-20 OPUS4-31527 Beitrag zu einem Tagungsband Neumann, Patrick P.; Kohlhoff, Harald; Werner, Klaus-Dieter; Erdmann, Jessica; Eggeringhaus, Bärbel; Kammermeier, Michael; Schukar, Marcus; Basedau, Frank; Bartholmai, Matthias; Lazik, D.; Ebert, Sebastian Setup of a large scale soil test field with CO2 injection for testing a novel distributed subsurface monitoring system for gas storage areas One of the main unsolved issues of under-ground storages for, e.g., CO2, H2, and natural gas is the comprehensive surveillance of these areas with reasonable effort and costs. Conventional sensors (e.g., soil air probes or borehole probes), however, can only be used for punctual or locally limited measurements; further their application can cause structural influences (invasive application). In this paper, we describe in detail the setup of a CO2 injection soil test field. This test field will be used to enhance and validate an innovative ap-proach for distributed subsurface monitoring of gas storage areas. To the author's knowledge, this is the first time that, for this purpose, a test field is built in an application relevant scale. Verein Deutscher Ingenieure (VDI) 2014 31st Danubia-Adria Symposium on advances in experimental mechanics (Proceedings) 978-3-00-046740-0 31st Danubia-Adria Symposium on advances in experimental mechanics Kempten, Germany 24.09.2014 27.09.2014 238 239 2016-02-20 OPUS4-31543 Posterpräsentation Bartholmai, Matthias Hopkinson Bar method for temperature dependent testing and calibration of accelerometers 2014 31st Danubia Adria Symposium on Advances in Experimental Mechanics 31st Danubia Adria Symposium on Advances in Experimental Mechanics Kempten, Germany 2014-09-24 2014-09-27 2016-02-20