TY - CONF A1 - Bartholmai, Matthias A1 - Schartel, Bernhard T1 - Comprehensive Fire Behaviour Assessment of Nanocomposites T2 - 9th European Meeting on Fire Retardancy and Protection of Materials, FRPM '03 CY - Lille, France DA - 2003-09-17 PY - 2003 AN - OPUS4-4615 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias A1 - Schartel, Bernhard T1 - A new approach for assessing the performance of intumescent coatings T2 - 10th European Meeting on Fire Retardancy and Protection of Materials (10th European Conference on Fire Retardant Polymers), FRPM '05, BAM CY - Berlin, Germany DA - 2005-09-07 PY - 2005 AN - OPUS4-6363 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schartel, Bernhard A1 - Bartholmai, Matthias A1 - Braun, Ulrike T1 - Residue, Charring and Intumescence N2 - The exploration of condensed phase mechanisms such as charring and intumescence has been pushed forward in the last decades, since it is believed that focusing on these concepts will bring materials closer to an efficient and ecologically friendly fire retardancy. They promise to concentrate efficient fire retardancy at the key position between pyrolysis zone and gas phase. Examples of residue/char forming and intumescent materials are used to illustrate the influence of mass and heat barrier effects on the fire behavior of materials and general results are presented. A comprehensive understanding of the mechanisms and structure-property relationships in fire retardancy is presented. KW - Fire retardancy KW - Nanocomposites KW - Red Phosphorus KW - Intumescence KW - Cone Calorimeter PY - 2006 SN - 1-59623-221-8 VL - XV SP - 15 EP - 21 PB - BCC Research CY - Norwalk, Conn. AN - OPUS4-4068 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias A1 - Köppe, Enrico ED - Urs Meier, ED - Bernadette Havranek, ED - Masoud Motavalli, T1 - Wireless sensor network for long-term structural health monitoring of buildings and infrastructures N2 - Damage commonly occurs in buildings when a component fails suddenly with a partial or total collapse as a consequence. This type of event leads to serious damage to property and if it is a bridge or a large hall, then people in particular are at risk. The often great age of bridges and the increasing volume of traffic (particularly heavy traffic) which they are expected to carry are in clear contradiction to each other. Thus the probability increases that the loadbearing capacity of a bridge decreases rapidly and often unnoticed with sometimes dire consequences. In order to prevent such accidents, the Federal Institute for Materials Research and Testing is currently developing a special radio-based, self-configuring measuring system in cooperation with the Berlin-based ScatterWeb Company. This measuring system consists of a number of identically designed sensor nodes which are self-sustaining, need no wiring, can act as both transmitters and receivers and are equipped with a special sensor technology making long-term monitoring of buildings or engineering facilities possible. The sensor unit uses strain gauges for stress analysis and contains interfaces for additional sensors. The system in particular applies to buildings and structures for transport and traffic and large-scale industrial facilities, where a subsequent wiring installation is difficult or impossible. T2 - 4th International conference on structural health monitoring of intelligent infrastructure CY - Zurich, Switzerland DA - 2009-07-22 KW - Funksensorik KW - Sensornetzwerk KW - Schadensfrüherkennung KW - Strukturüberwachung PY - 2009 IS - Paper 365 SP - 1 EP - 5 AN - OPUS4-19748 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Bartholmai, Matthias A1 - Neumann, Patrick P. ED - Fujita, H. ED - Sasaki, J. T1 - Micro-drone for gas measurement in hazardous scenarios via remote sensing T2 - 6th WSEAS International conference on REMOTE SENSING (REMOTE '10) CY - Iwate, Japan DA - 2010-10-04 KW - Remote sensing KW - Micro-drone KW - UAV KW - Gas measurement KW - Emission control KW - Data mapping KW - Monitoring KW - Plume tracking PY - 2010 SN - 978-960-474-233-2 SN - 1792-5088 SP - 149 EP - 152 PB - WSEAS Press AN - OPUS4-22275 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goedecke, Thomas A1 - Pettelkau, Alexander A1 - Hohendorf, Stefan A1 - Damm, David A1 - Bartholmai, Matthias A1 - Farahbakhsh, Mahin ED - Goedecke, T. T1 - Securing of dangerous goods transports by RFID-tags with sensor-functionality and integrated database "GEFAHRGUT" information (SIGRID) N2 - The project SIGRID investigates and assesses possibilities to enhance the safety and security of dangerous goods transports through the use of the latest RFID-technology. This technology can be used to greatly enhance the transparency of the supply chain and aid logistics companies in complying with regulations. In the context of SIGRID, customized RFID-Sensor-Tags have been developed that monitor dangerous goods during transport and help to prevent hazards by allowing timely countermeasures. In the case of a dangerous goods accident, the available information about the type, amount and condition of the dangerous goods can be used to accurately inform the relief forces. Unavailable or inaccurate information represents a significant problem for the relief forces. This often leads to a delay in the rescue operation, because relief forces must be aware of the substances involved to protect themselves effectively against them. SIGRID aims to close this information gap. To verify the practicability of the underlying concepts, a demonstrator will be build and tests of realistic scenarios will be conducted. T2 - 17th IAPRI World conference on packaging CY - Tianjin, China DA - 2010-10-12 KW - Dangerous goods KW - Sensors KW - Monitoring KW - RFID KW - WLAN KW - Electronic transport documents PY - 2010 SN - 978-1-935068-36-5 SP - 639 EP - 642 PB - Scientific research publishing AN - OPUS4-22313 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. A1 - Wiggerich, B. A1 - Bartholmai, Matthias T1 - Micro-drone for the characterization and self-optimizing search of hazardous gaseous substance sources T2 - IMAV 2010 - International micro air vehicle conference and flight competition CY - Braunschweig, Germany DA - 2010-07-06 KW - Mikrodrohne KW - Quadrokopter KW - Robotik KW - Suche und Lokalisierung von gasförmigen Gefahrstoffquellen PY - 2010 SP - 1 EP - 5 AN - OPUS4-22051 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Neumann, Patrick P. A1 - Bartholmai, Matthias A1 - Schiller, J.H. A1 - Wiggerich, B. A1 - Manolov, Manol T1 - Micro-drone for the characterization and self-optimizing search of hazardous gaseous substance sources: A new approach to determine wind speed and direction N2 - BAM Federal Institute for Materials Research and Testing, in cooperation with the AirRobot GmbH & Co. KG company, has developed a flying remote-controlled measuring system. The system is capable of operating in a variety of scenarios of gas emissions, e.g. exhaust gas from chimneys, flue gas in a fire, gas emissions in the case of an accident of chemical or hazardous goods or in the case of a terrorist act involving toxic gases. Thus it can measure the gas concentration in the immediate vicinity of the object which causes the emission. A further stage of extension is to enhance the system for plume tracking and identification of sources of hazardous gases. T2 - ROSE 2010 - IEEE International workshop on robotic and sensors environments CY - Phoenix, Arizona, USA DA - 2010-10-15 KW - Autonomous robot KW - UAV KW - Quadrocopter KW - Mobile sensing system KW - Chemical sensing KW - Gas sensors KW - Chemical source localization KW - Plume tracking KW - Anemometric sensor KW - Wind speed and direction PY - 2010 SN - 978-1-4244-7146-1 U6 - https://doi.org/10.1109/ROSE.2010.5675265 IS - Session 1 - Intelligent Sensing SP - 1 EP - 6 AN - OPUS4-22189 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. A1 - Asadi, S. A1 - Schiller, J.H. A1 - Lilienthal, A.J. A1 - Bartholmai, Matthias T1 - An artificial potential field based sampling strategy for a gas-sensitive micro-drone N2 - This paper presents a sampling strategy for mobile gas sensors. Sampling points are selected using a modified artificial potential field (APF) approach, which balances multiple criteria to direct sensor measurements towards locations of high mean concentration, high concentration variance and areas for which the uncertainty about the gas distribution model is still large. By selecting in each step the most often suggested close-by measurement location, the proposed approach introduces a locality constraint that allows planning suitable paths for mobile gas sensors. Initial results in simulation and in real-world experiments with a gas-sensitive micro-drone demonstrate the suitability of the proposed sampling strategy for gas distribution mapping and its use for gas source localization. T2 - IEEE/RSJ International conference on intelligent robots and systems (IROS '11) / Workshop on robotics for environmental monitoring (WREM2011) CY - San Francisco, CA, USA DA - 25.09.2011 KW - Autonomous UAV KW - Chemical sensing KW - Gas distribution modelling KW - Gas source localization KW - Gas sensors KW - Mobile sensing system KW - Quadrocopter KW - Sensor planning KW - Artificial potential field PY - 2011 SP - 34 EP - 38 AN - OPUS4-24537 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppe, Enrico A1 - Bartholmai, Matthias ED - Tsamis, C. ED - Kaltsas, G. T1 - Wireless sensor network with temperature compensated measuring technology for long-term structural health monitoring of buildings and infrastructures N2 - Damage to buildings occurs if a construction component fails. The result is a partial or total collapse which can be dangerous for people for example if it's a bridge or a large hall. The collapse of the terminal building at the Airport Charles de Gaulle in Paris and the damage at the historic City Archives of Cologne are typical examples of such accidents. Another problem is the contradiction of the increasing volume of traffic (particularly heavy traffic) and the great age of bridges. The probability increases that the load-bearing capacity of a bridge decreases. For example the collapses of the Mississippi Bridge and of the Inntal Motorway Bridge can be seen as results. Therefore it is necessary to control endangered structures during their life span. In order to prevent these kinds of accidents, the Federal Institute for Materials Research and Testing developed a radio-based, self-configuring measuring system in cooperation with the ScatterWeb Company, Berlin (Germany). This measuring system consists of identically designed sensor modules which are self-sustaining, wireless, act as transmitters and receivers and are equipped with a special sensor technology for long-term monitoring of buildings or engineering facilities. The sensor unit uses strain gauges for stress analysis and contains interfaces for additional sensors. The system in particular applies to buildings and structures for transport and traffic and large-scale industrial facilities, where a subsequent wiring installation is difficult or impossible. T2 - Eurosensors XXV CY - Athens, Greece DA - 04.09.2011 KW - Multi-Hop WSN KW - SHM KW - Temperature and Frequency Compensation KW - Funksensorik KW - Sensornetzwerk KW - Multihop KW - Strukturüberwachung KW - Temperaturkompensation PY - 2011 UR - http://www.sciencedirect.com/science/article/pii/S1877705811059236 IS - Paper 1197 SP - 1 EP - 5 PB - Elsevier AN - OPUS4-24401 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -