TY - CONF A1 - Ferrero, Fabio A1 - Kluge, Martin A1 - Kreißig, Michael A1 - Schmidtchen, Ulrich A1 - Holtappels, Kai T1 - Prevention of the explosion of acetylene cylinders involved in fire: experiments and simulations N2 - In order to assess the effectiveness of water cooling of acetylene cylinders involved in fire, a total of 13 bonfire tests with 8.9-, 10 and 50-l-cylinders were performed. During the experiments the pressure in the cylinder and the temperature at different locations within the porous material and on the Shell surface as well as the flame temperature were measured. Overall 8 burst tests were performed, in order to determine the times to explosion for the cylinders. Cylinders failed not later than 15 minutes from the ignition of the bonfire, often with generation of a fireball. During the other 5 tests, the fire was extinguished before the expected burst and the cylinder was cooled with water. In 2 of the 5 extinction experiments, the explosion of the cylinder could be prevented. Noticeably, in one case the on-set of the decomposition of acetylene had already been observed, before the cooling was started. In spite of that, the cooling was still effective. The interpretation of the current results and of the data from previous tests with 40-l-cylinder suggests that single acetylene cylinders involved in fire might be saved by cooling, if their pressure does not exceed a value of about 45 bara. The recorded values of pressure and temperature were used to develop and validate a mathematical model for the prediction of the heat transfer in acetylene cylinders during the exposure to fire and the afterward cooling. The predictions agreed well with the experimental results. T2 - 23rd ICDERS 2011 CY - Irvine, CA, USA DA - 24.07.2011 KW - Acetylene KW - Gas cylinders KW - Fire exposure KW - Decomposition PY - 2011 N1 - Geburtsname von Kluge, Martin: Beckmann-Kluge, M. - Birth name of Kluge, Martin: Beckmann-Kluge, M. IS - Paper 132 SP - 1 EP - 6 AN - OPUS4-24153 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Tschirschwitz, Rico A1 - Krentel, Daniel A1 - Kluge, Martin A1 - Askar, Enis A1 - Habib, Abdel Karim A1 - Kohlhoff, Harald A1 - Neumann, Patrick P. A1 - Storm, Sven-Uwe A1 - Rudolph, Michael A1 - Schoppa, André A1 - Sczepaniak, Mariusz T1 - Mobile gas cylinders in fire: Consequences in case of failure N2 - Commercial, off-the shelf propane cylinders are subjected to high safety regulations. Furthermore, those cylinders are equipped with safety devices like pressure relief valves (PRV). Despite these regulations and safety measures, a failure of the container is possible if exposed to an intense fire. The result of this is severe hazard for users, rescue forces and infrastructure. Within the framework of a destructive test series, 15 identical propane cylinders, without pressure relief devices, were exposed to an intensive fire in horizontal position until failure. Each cylinder was filled with a mass of m =11 kg of liquid propane. Three different fire sources were used (wood, petrol, propane). The experiments revealed the failure of all cylinders in a time period t < 155 s. The failure lead to a fragmentation into several major parts with throwing distances of up to l =262 m. In all trials, the temperature of the cylinder wall (top, side, bottom), of the liquid phase inside and of the surrounding fire (top, side, bottom) was recorded. In addition, the inner cylinder pressure and the induced overpressure of the blast wave after the failure were recorded. Overpressures of up to p=0.27 bar were recorded close to the cylinder (l =5 m). All tests were documented by video from several positions (general view, close-up, high-speed 5000 fps). This test series creates the basis for further experimental studies in the field of alternative fuels for vehicles. The aim of this test series is to assess and analyse the consequences of the failure of gas vessels (for LPG, CNG, CGH2) in the aftermath of severe incidents. KW - Explosion KW - Gas cylinders KW - Consequences PY - 2017 UR - http://www.sciencedirect.com/science/article/pii/S037971121730098X DO - https://doi.org/10.1016/j.firesaf.2017.05.006 SN - 0379-7112 SN - 1873-7226 VL - 91 SP - 989 EP - 996 PB - Elsevier AN - OPUS4-40550 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Krentel, Daniel A1 - Tschirschwitz, Rico A1 - Kluge, Martin A1 - Askar, Enis A1 - Habib, Abdel Karim A1 - Kohlhoff, Harald A1 - Mair, Georg W. A1 - Neumann, Patrick P. A1 - Rudolph, Michael A1 - Schoppa, André A1 - Storm, Sven-Uwe A1 - Szczepaniak, Mariusz T1 - Auswirkungen von unfallbedingtem Behälterversagen bei alternativen Pkw-Antrieben - Teil 1: Problemstellung, Stand der Technik und Voruntersuchungen N2 - Flüssige und komprimierte Gase sind in Deutschland, Europa und der Welt vielfältig als alternative Kraftstoffe im Einsatz. Diese werden unter teilweise hohem Druck in robusten Behältern an Bord gespeichert. Ein Versagen des Treibstoffbehälters im Schadensfall sollen verschiedene Sicherheitseinrichtungen, auch bei einem eventuell unfallbedingt auftretenden Fahrzeugbrand, verhindern. Sind diese Sicherheitseinrichtungen unfallbedingt beschädigt oder liegen die Belastungen dieser Einrichtung außerhalb ihres Auslegungsbereichs, ist ein Versagen des Behälters dennoch möglich. Dadurch kann es zur Bildung eines explosionsfähigen Brennstoff-Luft-Gemischs mit den entsprechenden Folgen für Fahrgäste, Einsatzkräfte und Umfeld kommen. Die Bundesanstalt für Materialforschung und -prüfung (BAM) untersucht im Forschungsprojekt "CoFi-ABV" mit umfangreichen zerstörenden Versuchsreihen im Realmaßstab die Folgen des unfallbedingten Versagens von Behältern für alternative Kraftstoffe und Maßnahmen zur Reduktion dieser Folgen im Rahmen einer ganzheitlichen Auswirkungsbetrachtung. Dieser Beitrag ist der Start einer Reihe und soll die Problemstellung sowie die Projektinhalte umfassend erläutern. KW - Alternative Antriebe KW - Alternative Kraftstoffe KW - Behälterversagen KW - Fahrzeugbrand PY - 2016 SN - 2191-0073 VL - 6 IS - 9 SP - 39 EP - 46 PB - Springer-VDI-Verlag CY - Düsseldorf AN - OPUS4-37360 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tschirschwitz, Rico A1 - Krentel, Daniel A1 - Kluge, Martin A1 - Habib, Abdel Karim A1 - Askar, Enis A1 - Kohlhoff, Harald A1 - Neumann, Patrick P. A1 - Rudolph, Michael A1 - Schoppa, André A1 - Szczepaniak, Mariusz T1 - Versagen von Gasbehältern für alternative Treibstoffe N2 - Im Rahmen des Projekts „Complex Fires – Auswirkung von Behälterversagen“ (CoFi-ABV) sollen die Auswirkungen des Versagens von Gasbehältern für alternative Treibstoffe in Fahrzeugen unter Berücksichtigung komplexer Brand- und Explosionsszenarien untersucht werden. Es wird der aktuelle Hintergrund des Forschungsvorhabens erläutert sowie die geplanten Untersuchungen und beabsichtigten Ergebnisse vorgestellt. Hauptbestandteil des Projekts ist eine Vielzahl von zerstörenden Großversuchen. Im Vorfeld dieser Großversuche werden zur Weiterentwicklung und Adaptierung von Messtechnik Versuche im kleineren Maßstab durchgeführt. Im Folgenden werden Teile dieser Ver-suchsaufbauten im „mid-scale“ sowie die dabei verwendete Messtechnik dargestellt. Weiterhin werden erste Ergebnisse aus Wärmeeintragsversuchen zur Quantifizierung verschiedener Unterfeuerungsmethoden für die zerstörenden Großversuche vorgestellt. T2 - 14. Kolloquium zur chemischen und physikalischen Sicherheitstechnik (BAM-PTB-Kolloquium) CY - Berlin, Germany DA - 14.06.2016 KW - Explosion KW - alternative Treibstoffe KW - Behälterversagen KW - Composite PY - 2016 SN - 978-3-9817853-5-7 SN - 0938-5533 SP - 1 EP - 143 PB - Bundesanstalt für Materialforschung und -prüfung (BAM) AN - OPUS4-37172 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Raedel, Martina A1 - Sabel, Martin A1 - Bücker, Michael A1 - Unger, Brita ED - Meeks, N. ED - Cartwright, C. ED - Meek, A. ED - Mongiatti, A. T1 - ESEM-EDX analyses for the characterisation and reproduction of nineteenth-century gold tesserae N2 - Environmental scanning electron microscopy with energy dispersive X-ray analysis (ESEM-EDX) is a versatile working tool for the examination of gold tesserae as well as for the selection of suitable materials for their reproduction. In this paper, the ESEM-EDX analyses of original gold tesserae and their damage types are presented. These analytical results form the basis for further calculations of glass properties and experiments. These calculated values enable the determination of the relevant glass properties and allow us to choose the appropriate type of modern glass for further experiments. Subsequent experiments convert this knowledge into practice. By comparing the analytical results from the original glasses and the replicas the accuracy and precision will be shown. KW - Gold mosaics KW - Tesserae KW - ESEM-EDX KW - Glass analyses KW - Damage mechanism PY - 2012 SN - 978-1-904982-65-4 SP - 107 EP - 113 PB - Archetype publications Ltd. AN - OPUS4-27641 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Neumann, Patrick P. A1 - Kohlhoff, Harald A1 - Hüllmann, Dino A1 - Kluge, Martin A1 - Askar, Enis A1 - Habib, Abdel Karim A1 - Krentel, Daniel A1 - Mair, Georg W. A1 - Rudolph, Michael A1 - Schoppa, André A1 - Szczepaniak, Mariusz A1 - Storm, Sven-Uwe A1 - Tschirschwitz, Rico T1 - Auswirkungen von Behälterversagen bei alternativen PKW-Antrieben - Teil 2: UAV-basierte Fernerkundung von Gaswolken N2 - Verkehrsunfälle unter Beteiligung von Fahrzeugen mit alternativen Kraftstoffen wie LPG („Autogas“, Liquefied Petroleum Gas), CNG (Compressed Natural Gas, komprimiertes Erdgas) oder CGH2 (Compressed Gas Hydrogen, komprimierter Wasserstoff), bergen neue, komplexe Risiken für Passagiere, Einsatzkräfte und deren Umfeld. Im Rahmen des Projektes „CoFi-ABV“ beschäftigt sich die Bundesanstalt für Materialforschung und -prüfung (BAM) unter Berücksichtigung komplexer Brand- und Explosionsszenarien mit einer ganzheitlichen Betrachtung der Auswirkungen des unfallbedingten Versagens von Gasbehältern für alternative Kraftstoffe. Ein wichtiger Teil des Forschungsvorhabens umfasst Entwicklung, Aufbau und Validierung einer unbemannten Flugplattform (Unmanned Aerial Vehicle, UAV) zur Ferndetektion von Gaswolken. Für das sogenannte gassensitive Mini-UAV wird ein robuster Open-Path-Gasdetektor auf einer Sensorbewegungsplattform in Form eines modifizierten Kamera-Gimbals, integriert. Ziel ist es, ein leistungsfähiges und robustes Werkzeug zu entwickeln, welches Einsatzkräften im Falle eines Unfalls als Hilfe zur Abschätzung der Gefahr durch Gaswolken, ihrer Ausbreitung und der notwendigen Absperrbereiche zur Verfügung steht. Dieser Artikel ist der zweite der Reihe und legt, nach Projektvorstellung im ersten Teil, nun den Schwerpunkt auf das gassensitive Mini-UAV. KW - UAV KW - Fernerkundung KW - Open-Path-Gasdetektor KW - Alternative Antriebe/Kraftstoffe KW - Behälterversagen PY - 2016 SN - 2191-0073 VL - 6 IS - 11/12 SP - 23 EP - 28 PB - Springer-VDI-Verlag CY - Düsseldorf AN - OPUS4-38517 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krentel, Daniel A1 - Tschirschwitz, Rico A1 - Kluge, Martin A1 - Askar, Enis A1 - Habib, Abdel Karim A1 - Kohlhoff, Harald A1 - Neumann, Patrick P. A1 - Rudolph, Michael A1 - Schoppa, André A1 - Storm, Sven-Uwe A1 - Szczepaniak, Mariusz T1 - Experimental investigation of failure of LPG gas tanks in passenger cars during full fire development N2 - In continuation of a preceding test series involving sole LPG vehicle tanks, three passenger cars equipped with identical toroidal steel LPG tanks were set on fire. The tanks were installed in the space normally reserved for the spare tyre, in the car boot. No safety device was installed on the tank, in order to force critical failure of the cylinder. Two of the cars were equipped with a tank filled with liquefied propane to a level of 20 % (5.3 kg), the third one was filled completely (25.5 kg). The partially filled tanks failed critically within a time period of more than 20 min after the initiation of the fire. The fully-filled tank did not rupture; the propane was released continuously through a small leak that appeared during the fire. Comprehensive equipment was used to procure measurement data, enabling an analysis of potential consequences and hazards to humans and infrastructure within the vehicle surroundings. The inner status of the tank (pressure, temperature of the liquid phase and the steel casing), the development of the fire (temperature inside and around the vehicle) and the pressure induced in the near-field in case of tank rupture were recorded. The results were analysed in detail and compared against the data gained in tests involving sole, but identical LPG tanks. T2 - FIVE 2018 CY - Boras, Sweden DA - 03.10.2018 KW - Behälterversagen KW - LPG KW - Alternative Antriebe KW - Fahrzeugbrand KW - Auswirkungsbetrachtung PY - 2018 SN - 978-91-88695-95-6 VL - 51 SP - 123 EP - 131 PB - RISE Safety CY - Boras AN - OPUS4-46310 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krentel, Daniel A1 - Rudolph, Michael A1 - Tschirschwitz, Rico A1 - Kluge, Martin A1 - Askar, Enis A1 - Habib, Abdel Karim A1 - Kohlhoff, Harald A1 - Neumann, Patrick P. A1 - Schalau, Bernd A1 - Schoppa, André A1 - Storm, Sven-Uwe A1 - Szczepaniak, Mariusz A1 - Mair, Georg W. T1 - Infrared radiation measurement at failure of mobile gas vessels N2 - 15 identical off-the-shelf propane cylinders (m = 11 kg liquid propane) were underfired. The infrared Radiation of the Explosion, that occurred in the aftermath of the vessel failure, was recorded using four bolometers. These measurements are compared with an estimation of the Maximum intensity gained by an Analysis of the Video data, an Extended Version of the Stefan-Boltzmann law and a BLEVE model. T2 - 26th International Colloquium on the Dynamics of Explosions and Reactive Systems CY - Boston, USA DA - 30.07.2017 KW - Failure of gas vessels KW - Propane cylinder KW - Gas explosion KW - Consequences KW - Infrared radiation PY - 2017 SP - 1 EP - 6 PB - FM Global CY - Seattle, USA AN - OPUS4-41993 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Bevilacqua, Tommaso A1 - Gumenyuk, Andrey A1 - Habibi, Niloufar A1 - Hartwig, Philipp A1 - Klawonn, Axel A1 - Lanser, Martin A1 - Rethmeier, Michael A1 - Scheunemann, Lisa A1 - Schröeder, Jöerg T1 - Large-scale thermo-mechanical simulation of laser beam welding using high-performance computing: A qualitative reproduction of experimental results N2 - Laser beam welding (LBW) is a non-contact joining technique that has gained significant importance in modern industrial manufacturing. One potential problem, however, is the formation of solidification cracks, which particularly affects alloys with a pronounced melting range. The aim of the present work is the development of computational methods and software tools to numerically simulate LBW. In order to obtain a sufficiently accurate solution, a large number of finite elements has to be used. Therefore, a highly parallel scalable solver framework, based on the software library PETSc, was used to solve this computationally challenging problem on a high-performance computing architecture. Finally, the experimental results and the numerical simulations are compared. They are found to be in good qualitative agreement, which confirms the validity of the numerical simulations and allows for a better interpretation of the experimentally observed strain distribution. KW - Laser beam welding KW - Termo-mechanical processes KW - Solidification cracking KW - High-performance computing KW - Domain decomposition methods PY - 2025 DO - https://doi.org/10.1016/j.rineng.2025.108827 SN - 2590-1230 SP - 1 EP - 33 PB - Elsevier B.V. AN - OPUS4-65290 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Ferrero, Fabio A1 - Kluge, Martin A1 - Hensel, Christina A1 - Kreißig, Michael A1 - Schmidtchen, Ulrich A1 - Holtappels, Kai T1 - Unterfeuerung von Acetylendruckgasbehältern T2 - 10. Fachtagung Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen, Deutschland DA - 2010-11-04 KW - Sicherheit KW - Acetylen KW - Feuer KW - Wasserkühlung KW - Wärmeübertragung PY - 2010 SN - 978-3-89746-119-2 N1 - Geburtsname von Kluge, Martin: Beckmann-Kluge, M. - Birth name of Kluge, Martin: Beckmann-Kluge, M. IS - Paper N-02 SP - 1 EP - 20 CY - Frankfurt/M. AN - OPUS4-22351 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Ferrero, Fabio A1 - Kluge, Martin A1 - Kreißig, Michael A1 - Hensel, Christina A1 - Schmidtchen, Ulrich A1 - Holtappels, Kai T1 - Preventing the explosion of acetylene cylinders involved in fire with help of numerical modeling N2 - The current paper describes a mathematical model, which was developed to simulate the heat transfer in acetylene cylinders during exposure to a fire. The cases of a direct engulfment of the cylinder in the flames and of exposure to a distant fire were considered. Furthermore, the model was also applied to the prediction of the heat transfer during the cooling with water of heated acetylene cylinders, in order to assess the effectiveness of this procedure as a measure to prevent the burst of the cylinder. To provide data for the definition and validation of the model a total of 13 bonfire tests with 8.9-, 10- and 50-dm³-cylinders were performed, where pressure and temperature measurements in the samples were performed. During 5 experiments the fire was extinguished before the expected cylinder burst and a cooling with water was applied. In the paper a short description of the experimental set-up and of the test results is given. Finally, a comparison with the model predictions is provided, showing reasonable agreement. KW - Acetylene cylinders KW - Fire KW - Explosion KW - Cooling KW - Numerical model PY - 2012 DO - https://doi.org/10.1016/j.jlp.2011.10.006 SN - 0950-4230 SN - 1873-3352 N1 - Geburtsname von Kluge, Martin: Beckmann-Kluge, M. - Birth name of Kluge, Martin: Beckmann-Kluge, M. VL - 25 IS - 2 SP - 364 EP - 372 PB - Butterworth CY - Guildford, Surrey AN - OPUS4-25137 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -