TY - CONF A1 - Zekhnini, Khalid A1 - Ebell, Gino A1 - Burkert, Andreas T1 - Corrosion at metallic offshore constructions – Bundesanstalt für Materialforschung und -prüfung (BAM) N2 - In the maritime context of offshore operation, corrosion, in combination with the materials used, poses a particular challenge to ensure safe operation over long indefinite periods and to minimise susceptibility to failure. Until today, only a few corrosion protection systems have proven themselves for the interaction of efficiency, installation, and maintenance in the offshore sector. In addition, available corrosion test methods sometimes have major deficits about conclusions of the durability. Therefore, there is more research and development needed. The flagship project H2Mare of the Federal Ministry of Education and Research aims to enable the production of green hydrogen and PtX products at high seas. Research is being driven forward by the partners in four individual projects, where BAM is involved in two. In PtX-Wind, major kinds of corrosion attacks at offshore constructions are characterized and investigated, and suitable corrosion protection measures determined. In TransferWind, attention focusses on transferring scientific results into standardization. This poster at the H2Mare Conference 2023 presents an overview of the investigation methods and contribution of the department “Corrosion and Corrosion Protection”. T2 - H2Mare Conference 2023 CY - Frankfurt/Main, Germany DA - 12.06.2023 KW - Atmospheric Corrosion KW - Sea Water KW - Corrosion Testing KW - Offshore KW - Laboratory Container KW - Corrosion protecting system PY - 2023 AN - OPUS4-57838 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wu, Hongyi A1 - Christiani, Ricardo A1 - Hofmann-Böllinghaus, Anja T1 - Untersuchung von Brandausbreitungsmechanismen bei Waldbränden N2 - Das EU Projekt TREEADS „A Holistic Fire Management Ecosystem for Prevention, Detection and Restoration of Environmental Desasters” beschäftigt sich mit der Erforschung der drei Phasen „Prävention und Bereitschaft“, „Detektion und Reaktion“ und „Aufforsten und Anpassen“ der Waldbrandverhütung. Im Projekt gibt es acht ausgewiesene Pilotregionen, in denen Deutschland auch mit einer Pilotregion in Sachsen-Anhalt bzw. in Brandenburg vertreten ist. Unsere Arbeit auf Charakterisierung des Waldbodens und numerische Simulation wird vorgestellt. T2 - vfdb-Jahresfachtagung 2023 CY - Münster, Germany DA - 15.05.2023 KW - Waldbrand KW - Klimawandel KW - Charakterisierung des Waldbodens KW - Numerische Strömungsmechanik PY - 2023 AN - OPUS4-57621 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tabaka, Weronika A1 - Schartel, Bernhard T1 - Bench-scale fire stability testing - Protective layers in carbon fibre reinforced polymer laminates N2 - Fire resistance testing of components made of carbon fibre reinforced polymers (CFRP) composites usually demands intermediate-scale or full-scale testing. In this study, a bench-scale test is presented as a practicable and efficient method to assess the improvement in structural integrity of CFRP with different protective interlayers during fire. T2 - International Conference on Composite Materials (ICCM23) CY - Belfast, UK DA - 30.07.2023 KW - Fire resistance KW - Bench-scale testing KW - Carbon fibre reinforced polymer composite PY - 2023 AN - OPUS4-58099 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sunkavalli, Viswa Ratnasri A1 - Strangfeld, Christoph A1 - Maack, Stefan T1 - Thickness Measurements of Polyamide Specimens using Fluidic Oscillator as a Frequency Modulated Air-Coupled Ultrasonic Transducer N2 - Ultrasonic inspection, especially contact and immersion methods, have become established techniques for non-destructive testing in civil engineering (NDT-CE). However, the requirement for coupling agents renders these methods cumbersome in practice due to the potential for surface defacement and an arduous measurement process. Consequently, air-coupled ultrasonic transducers have been proposed as an alternative to address these concerns. These (alternatives), however, come with their own challenges, such as a significant impedance mismatch between the air and the specimen as well as the susceptibility of time of flight (TOF) measurements to ambient conditions. Recently, fluidic oscillators have been developed for in-air sound generation to alleviate impedance mismatch and improve the overall robustness, which is an important consideration of NDT-CE applications. The advantage of fluidic oscillators lies in their ability to generate an ultrasonic signal via oscillating air jet excited by a self-actuated fluctuation. Using air as the operating medium provides a supplementary benefit of lowering measurement durations in addition to a substantial drop in acoustic impedance losses with air acting both as an actuation as well as a coupling medium. Thus, TOF measurements using such fluidic transducers are expected to enable faster characterization of specimen parameters. In that regard, material characterization of polyamide is carried out using ultrasound generated by fluidic devices. Additionally, the mass flow rate of the operating fluid is observed to have a significant effect on the frequency of the fluidic oscillator. Accordingly, the frequency of the oscillation is modulated by varying the supply pressure, leading to a varying flow rate, which in turn facilitates a robust and reliable assessment of the TOF through the material by the generated chirp signals. Furthermore, such frequency modulations effectively improve the signal-to-noise ratio (SNR). Along with a comprehensive study of these new fluidic transducers, preliminary measurement findings are presented, including the material characterization of polymers using air-coupled, frequency-modulated ultrasound. T2 - European Conference on Non-Destructive Testing (ECNDT) CY - Lisbon, Portugal DA - 03.07.2023 KW - Air coupled ultrasound KW - Fluidic actuator PY - 2023 AN - OPUS4-57940 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sunder, S. A1 - Jauregui Rozo, Maria A1 - Schartel, Bernhard A1 - Ruckdäschel, H. T1 - Microstructure analysis and mechanical characterization of flame-retardant epoxy resins transferred to glass fiber composites via prepregs N2 - The transfer of flame-retardant epoxy resin formulations to composites for structural and lightweight applications in the energy and transport sector can be complex and requires systematic investigation. Here, uncoated and silane-coated ammonium polyphosphate (APP, Si-APP) intumescent compounds are transferred to prepregs using a Bisphenol A diglycidyl ether (DGEBA) resin matrix to 0/90o bidirectional glass fibers with an aerial weight of 600 g/m2. Inorganic silicates (InSi) are added to improve the fire residues of the composites after combustion and the total amount of flame retardants in the resin formulations was 10% by weight. The prepregs' fiber volume content (FVC) is corroborated using in-process measurements and thermogravimetric analysis. This was found to be approximately 60% for the composites containing APP, which is ideal for load-bearing applications with high mechanical strength. However, the Si-APP containing prepregs showed an inconsistent FVC potentially due to interactions with the commercial sizing of the glass fibers. The composites subsequently prepared are analysed for potential filtration effects of the additives via SEM after immobilization in a cured resin and platinum sputtering. The inter-laminar shear strength and the mechanical strength of the composites are compared via three-point bending tests. Additionally, the fire performance of the composites is analysed using cone calorimetry. It was found there was minimal impact of the loading of the flame retardants on the delamination of the composites and the flexural strength. However, the high density of the glass fibers possibly results in a suppression of the mode of action of the flame retardants in the composites. Therefore, the fire residues of the composites are further compared using SEM, and the flame-retardant modes of action upon transfer are investigated. T2 - FEMS EUROMAT 23 CY - Frankfurt am Main, Germany DA - 03.09.2023 KW - Lightweight construction KW - Flame retardancy KW - Composites PY - 2023 AN - OPUS4-59136 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sunder, S. A1 - Jauregui Rozo, Maria A1 - Schartel, Bernhard A1 - Ruckdäschel, H. T1 - Adapting intumescent/low-melting glass flame-retardant formulations for transfer to glass-fiber-reinforced composites and post-fire mechanical analysis N2 - The residual post-fire mechanical properties of fiber-reinforced epoxy composites are influenced by their fire residues after burning. This study uses intumescent/low-melting glass flame retardants to tailor fire residues in epoxy resin. Processibility of prepregs and their quality are analysed for transfer of the flame-retardant epoxy resins to layered glass-fiber reinforced composites. Minimal effects were found on the pre-fire flexural strengths of the composites due to low loading of the flame retardants. However, when transferred to glass-fiber reinforced composites, the fire residues diminish significantly. Further studies are required to improve theoretical and experimental estimations of the post-fire mechanics of the composites. T2 - SAMPE Europe Conference 2023 CY - Madrid, Spain DA - 03.10.2023 KW - Composites KW - Flame retardancy KW - Lightweight KW - Post fire mechanics KW - Intumescent PY - 2023 AN - OPUS4-59137 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Katja A1 - Stahl, Michael A1 - Farahbakhsh, Mahin T1 - Fachinformationssystem Datenbank GEFAHRGUT N2 - Es werden die Anwendungen des Gefahrgutdatenpools der BAM aufgezeigt, der ein zentrales Informationssystem für den Transport gefährlicher Güter darstellt. T2 - Stuttgarter Gefahrguttag CY - Stuttgart, Germany DA - 24.10.2023 KW - BAM-Liste KW - Datenbank GEFAHRGUT KW - Gefahrgut-Schnellinfo KW - Gefahrgutdatenpool KW - Gefahrguttransport KW - Informationssystem KW - Kurzinfo KW - Modul für Beförderungspapiere KW - Modul für radioaktive Stoffe KW - BAM List KW - Dangerous Goods Database KW - Dangerous Goods Quickinfo KW - Radioactive Materials Module KW - Transport Documents Module PY - 2023 AN - OPUS4-58710 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Katja A1 - Stahl, Michael A1 - Farahbakhsh, Mahin T1 - Fachinformationssystem Datenbank GEFAHRGUT - Hilfe bei der Kennzeichnung der Umweltgefahr N2 - Möglichkeiten der Datenbank GEFAHRGUT und des Gefahrgutdatenservices die Notwendigkeit der Kennzeichnung der Umweltgefahr zu ermitteln. T2 - Stuttgarter Gefahrguttag CY - Stuttgart, Germany DA - 24.10.2023 KW - Datenbank KW - Fachinformationssystem KW - Gefahrgut KW - Kennzeichnung KW - Umweltgefahr KW - Dangerous goods KW - Database KW - Environmentally hazardous substance KW - Labelling KW - Specialised information system PY - 2023 AN - OPUS4-58711 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank A1 - Eberwein, Robert A1 - Hajhariri, Aliasghar A1 - Camplese, Davide A1 - Scarponi, Giordano Emrys A1 - Cozzani, Valerio T1 - Systems with Cryogenic Liquefied Gases in Fire Incidents N2 - Liquefied Hydrogen (LH2) or Liquefied Natural Gas (LNG) establish themselves as important energy carriers in the transport sector. Its storage requires tanks with Thermal Super Insulations (TSI) to keep the transported fluid cold. TSI has proven itself in various applications over a long time, but not in the land transport sector, where accidents involving collisions, fires, and their combination are to be expected. The focus of this study is to investigate the behavior of different types of TSI when exposed to a heat source that represents a fire. Therefore, a High- Temperature Thermal Vacuum Chamber (HTTVC) was used that allows the thermal loading of thermal insulation material in a vacuum and measuring the heat flow through the TSI in parallel. Within this study, 5 samples were tested regarding 3 different types of MLI, rock wool, and perlites. The thermal exposure caused different effects on the samples. In practice, this can be connected to the rapid release of flammable gases as well as a Boiling Liquid Expanding Vapour Explosion (BLEVE). These results are relevant for the evaluation of accident scenarios, the improvement of TSI, and the development of emergency measures. T2 - IMECE 2023 CY - New Orleans, Louisiana, USA DA - 29.10.2023 KW - LH2 KW - LNG KW - Fire PY - 2023 AN - OPUS4-58769 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. A1 - Bartholmai, Matthias A1 - Grotelüschen, Bjarne A1 - Strangfeld, Christoph T1 - Towards Autonomous NDT Inspection: Setup and Validation of an Indoor Localization System N2 - Monitoring and maintenance of civil infrastructure are of great importance, as any undetected damage can cause high repair costs, unintended deadtime, or endanger structural integrity. The inspection of large concrete structures such as bridges and parking lots is particularly challenging and time-consuming. Traditional methods are mostly manual and involve mapping a grid of measurement lines to record the position of each measurement. Current semi-automated methods, on the other hand, use GPS or tachymeters for localization but still require trained personnel to operate. An entirely automated approach using mobile robots would be more cost- and time-efficient. While there have been developments in using GPS-enabled mobile robots for bridge inspection, the weak signal strength in indoor areas poses a challenge for the automated inspection of structures such as parking lots. This paper aims to develop a solution for the automated inspection of large indoor concrete structures by addressing the problem of robot localization in indoor spaces and the automated measurement of concrete cover and rebar detection. T2 - 39th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Siófok, Hungary DA - 26.09.2023 KW - NDT Inspection KW - Mobile Robot KW - Indoor Localization KW - Setup and Validation PY - 2023 AN - OPUS4-58662 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -