TY - CONF A1 - Hicke, Konstantin T1 - Using DAS for monitoring of infrastructures and for seismic sensing applications N2 - After describing the basics of distributed fiber optic sensing in general and distributed fiber optic acoustic sensing (DAS) in particular, several currently and previously investigated fields of application of DASin infrastructure monitoring and seismic monitoring are presented. A focus is placed on seismic measurements and DAS measurements determining the dynamic responses of concrete structures to certain stimuli. T2 - Meeting of the WAVE Initiative Hamburg CY - Online meeting DA - 09.02.2023 KW - Distributed acoustic sensing KW - DAS KW - Dynamic structural response KW - Seismic measurements KW - Bridge monitoring KW - Traffic monitoring PY - 2023 AN - OPUS4-57007 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gerbeit, Marco T1 - Test set-up for reproducible shock wave generation N2 - In industrial applications, the effects of explosions must be considered as important part of safety assessments. This is particularly crucial in applications involving explosives or pressurized containers. The evaluation of the effects of shock waves on the environment becomes essential in such scenarios and requires comprehensive experimental test series. This article therefore presents a test bench that can generate and record reproducible, adjustable shock waves with short set-up times. The presented data proves the quality and validity of this set-up to generate case relevant data, like overpressure in comparison to explosives and shock tubes, with load cases of high relevance. The presented free-field tests are carried out at BAM's Test Site Technical Safety (TTS) with a gas-operated shock wave generator. This shock wave generator consists of a pressure vessel (autoclave) that is operated with a detonable gas mixture or compressed air. The pressure is released through an orifice by the instantaneous bursting of a diaphragm. The aim is to develop further the novel test bench that generates shock waves on models in a generic scenario and offers several advantages to create a valid database for the effects of shock waves. In contrast to classic shock tubes, this test bench offers the advantage of realistic hemispherical shock wave propagation and scalability, both for the investigated model size and for the generation of load cases, so that different model variables can be investigated under different boundary conditions (mainly overpressure); at the same time, typical interference of a shock tube experiment due to reflections, blockage effects and the following fluid flow can be minimized. These negative influences are not realistic compared to the ideal event of a detonation. T2 - 15th International Symposium on Hazards, Prevention and Mitigation of Industrial Explosions (ISHPMIE) CY - Naples, Italy DA - 10.06.2024 KW - Shock KW - Blast KW - Autoclave KW - Explosions KW - Overpressure PY - 2024 AN - OPUS4-60982 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lengas, Nikolaos T1 - Drop test simulation of packaging for dangerous goods: Investigation of appropriate drop height adjustment N2 - In the approval process of dangerous goods packagings, drop tests onto a flat, essentially unyielding surface are used to assess resistance against mechanical damage. International adopted regulations like ADR and RID define filling good dependent drop heights and filling degrees whilst the user needs to define the maximum gross mass to be tested and approved. Maximum packaging gross mass is defined conservatively and not reached in practice. To meet the defined gross mass in testing, using additives is permitted. However, in some cases, additives are not desirable due to packaging design or filling substance properties. This leads to deviations from the initial gross mass definition. Hence, a certain drop height adjustment is necessary to achieve the required impact loading. Laboratories frequently adjust drop height assuming a perfectly elastic collision which is inaccurate. Appropriate adjustment is not trivial due to energy conversion processes, e.g., plastic deformation. In this work, a test stand is developed for measuring the change in kinetic energy of different packaging designs and filling substances in regulative drop tests. The experimental results are used to validate finite-element (FE) models so that packaging properties can be varied in simulated drop test scenarios. The findings intend to describe the appropriate drop height adjustment of the respective packaging with same design but deviating gross mass to produce comparable mechanical response. The results are highly beneficial for testing laboratories, approval issuing authorities and packaging institutes confronted with the problem of testing packages with gross masses other than those to be approved. T2 - 24th IAPRI World Conference CY - Valencia, Spain DA - 17.06.2024 KW - Dangerous goods packagings KW - FEM KW - Drop test KW - Mechanical response PY - 2024 AN - OPUS4-60607 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hicke, Konstantin T1 - Fibre Optic Sensing @BAM N2 - The profile of division 8.6 Fibre Optic Sensors is shown, underlining specific competencies and know-how. Furthermore, several current application examples of the use of distributed fiber optic sensing for condition and state monitoring are presented. T2 - Visit and technical tour of OECD/NEA CODAP working group led by Gesellschaft für Anlagen- und Reaktorsicherheit CY - Berlin, Germany DA - 19.09.2024 KW - Distributed fiber optic sensing KW - Condition monitoring KW - Geomonitoring KW - Structural health monitoring KW - Embedded fiber optic sensor PY - 2024 AN - OPUS4-61080 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohrer, Christian T1 - Mythos oder Wahrheit - die kalte Pyrotechnik N2 - Beschreibung akktueller Gefährdungen beim Missbrauch von Pyrotechnik in Stadien, insbesondere Fackeln. Produktentwicklung "kalte Pyrotechnik" wurde bewertet im Hinblick auf Temperatur und Aerosolemissionen. T2 - 22. Internationales Symposium des Bundeskriminalamtes für Sprengstoffermittelnde und Entschärfende unkonventioneller Spreng- und Brandvorrichtungen CY - Magdeburg, Germany DA - 28.11.2022 KW - Pyrotechnik KW - Fackeln KW - Aerosole KW - Fussballstadien PY - 2022 AN - OPUS4-56448 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grunert, Wiebke T1 - EU project ODYSSEUS - year 1 N2 - Vorstellung EU-Projekt ODYSSEUS zum Thema Home-Made-Explosives sowie erste Ergebnisse bzgl. Rezepten, Ausgangsstoffen und Home-Made-Explosives in diesem Zusammenhang. T2 - 22. Internationales Symposium des Bundeskriminalamtes für Sprengstoffermittelnde und Entschärfende unkonventioneller Spreng- und Brandvorrichtungen CY - Magdeburg, Germany DA - 28.11.2022 KW - Home-Made-Explosives KW - Precurser PY - 2022 AN - OPUS4-56449 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seeber, Henrik T1 - Explosivstoffkunde - Physikalische Grundlagen und Explosionswirkung N2 - Der Vortrag „Explosivstoffkunde - Physikalische Grundlagen und Explosionswirkung“ ist ein Lehrvortrag, welcher die folgenden Unterkapitel enthält: Einteilung und Definition, Sprengstoffe und Kenngrößen, Physikalische Grundlagen, Explosionswirkung und Low Level Blast Belastung. Die thematische Tiefe stellt lediglich einen Überblick dar. Der Schwerpunkt liegt insgesamt auf der Auswirkungsbetrachtung von Explosivstoffen insbesondere auf der primären Explosionswirkung, also dem Überdruck oder auch Blast genannt. T2 - 25. Neurotraumakurs BwK Ulm CY - Ulm, Germany DA - 15.10.2024 KW - Primäre Explosionswirkug KW - Blast injury KW - Pressure wave KW - Druckwelle PY - 2024 AN - OPUS4-61446 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hicke, Konstantin T1 - Fibre Optic Sensors (Division 8.6) N2 - Fiber optic sensing technology being researched and developed at BAM and its numerous applications/ use cases is presented briefly after a short introductory part on the fundamentals of (distributed) fiber optic sensing. T2 - BAM - RCNDE (UK) Webinar CY - Online meeting DA - 13.11.2024 KW - Distributed fiber optic sensing KW - Structural health monitoring KW - Condition monitoring KW - DAS KW - Embedded fiber optic sensors PY - 2024 AN - OPUS4-61643 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Lengas, Nikolaos A1 - Müller, Karsten A1 - Schlick‐Hasper, Eva A1 - Neitsch, Marcel A1 - Johann, Sergej A1 - Zehn, Manfred W. T1 - Drop Test Simulation of Packaging for Dangerous Goods: An Investigation of Appropriate Drop Height Adjustment in Case of Deviating Packaging Gross Mass N2 - In the approval process of dangerous goods packagings, drop tests onto a flat, essentially unyielding surface are used to assess resistance against mechanical damage. International adopted regulations like ADR and RID define filling good dependent drop heights and filling degrees whilst the user needs to define the maximum gross mass to be tested and approved. Maximum packaging gross mass is defined conservatively and not reached in practice. To meet the defined gross mass in testing, using additives is permitted. However, in some cases, additives are not desirable due to packaging design or filling substance properties. This leads to deviations from the initial gross mass definition. Hence, a certain drop height adjustment is necessary to achieve the required impact loading. Laboratories frequently adjust drop height assuming a perfectly elastic collision that is inaccurate. Appropriate adjustment is not trivial due to energy conversion processes, for example, plastic deformation. In this work, a test stand KW - Corrugated fibreboard box KW - Dangerous goods packagings KW - Drop test KW - Impact target KW - Mechanical response KW - Structural dynamics PY - 2024 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-614138 DO - https://doi.org/10.1002/pts.2858 SP - 1 EP - 18 PB - Wiley AN - OPUS4-61413 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lu, Xin A1 - Hicke, Konstantin A1 - Krebber, Katerina T1 - Distributed fiber optic sensing for monitoring of underground facilities N2 - Distributed fiber optic sensing (DFOS) technique is a promising and robust non-destructive testing tool that can seamlessly acquire environmental conditions over large scales. Therefore, it has found extensive applications in structural health monitoring. Its appeal for monitoring underground facilities lies in the intrinsic properties of the optical fiber, such as immunity to magnetic interference, small size, chemical inertia, etc. This paper provides a concise overview of DFOS applications in underground facility monitoring. Following a brief introduction to the working principle of the DFOS technique, various examples are provided to demonstrate how distributed fiber sensors contribute to monitoring underground facilities. The paper presents unpublished field test results with an emphasis in the energy sector, including monitoring gas storage facilities, geothermal reservoir exploration, and ground movement detection. Furthermore, the paper identifies several directions for enhancing the DFOS system. T2 - SPIE Photonics Europe CY - Strasbourg, France DA - 07.04.2024 KW - Underground gas storage KW - Distributed fiber sensing KW - Geothermal borehole KW - Ground movement KW - Leakage detection KW - Structure health monitoring PY - 2024 AN - OPUS4-60146 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lu, Xin A1 - Hicke, Konstantin A1 - Krebber, Katerina T1 - Distributed fiber optic sensing for monitoring of underground facilities N2 - Distributed fiber optic sensing (DFOS) technique is a promising and robust non-destructive testing tool that can seamlessly acquire environmental conditions over large scales. Therefore, it has found extensive applications in structural health monitoring. Its appeal for monitoring underground facilities lies in the intrinsic properties of the optical fiber, such as immunity to magnetic interference, small size, chemical inertia, etc. This paper provides a concise overview of DFOS applications in underground facility monitoring. Following a brief introduction to the workingbnprinciple of the DFOS technique, various examples are provided to demonstrate how distributed fiber sensors contribute to monitoring underground facilities. The paper presents unpublished field test results with an emphasis in the energy sector, including monitoring gas storage facilities, geothermal reservoir exploration, and ground movement detection. Furthermore, the paper identifies several directions for enhancing the DFOS system. T2 - SPIE Photonics Europe CY - Strasbourg, France DA - 07.04.2024 KW - Structure health monitoring KW - Geothermal borehole KW - Distributed fiber optic sensing KW - Ground movement KW - Leakage detection PY - 2024 DO - https://doi.org/10.1117/12.3023571 SN - 0277-786X VL - 13001 SP - 1 EP - 10 PB - SPIE AN - OPUS4-60384 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -