TY - GEN ED - Czichos, Horst T1 - Handbook of technical diagnostics - Fundamentals and application to structures and systems N2 - This book presents concepts, methods and techniques to examine symptoms of faults and failures of structures, systems and components and to monitor functional performance and structural integrity. The book is organized in five parts. Part A introduces the scope and application of technical diagnostics and gives a comprehensive overview of the physics of failure. Part B presents all relevant methods and techniques for diagnostics and monitoring: from stress, strain, vibration analysis, nondestructive evaluation, thermography and industrial radiology to computed tomography and subsurface microstructural analysis. Part C cores the principles and concepts of technical failure analysis, illustrates case studies, and outlines machinery diagnostics with an emphasis on tribological systems. Part D describes the application of structural health monitoring and performance control to plants and the technical infrastructure, including buildings, bridges, pipelines, electric power stations, offshore wind structures, and railway systems. And finally, Part E is an excursion on diagnostics in arts and culture. The book integrates knowledge of basic sciences and engineering disciplines with contributions from research institutions, academe, and industry, written by internationally known experts from various parts of the world, including Europe, Canada, India, Japan, and USA. KW - Acoustic emission KW - Machinery diagnostics KW - Nondestructive testing KW - Offshore structures KW - Strain determination KW - Structural health monitoring KW - Surface analysis KW - Quality control KW - Reliability KW - Safety KW - Risk PY - 2013 SN - 978-3-642-25849-7 SN - 978-3-642-25850-3 DO - https://doi.org/10.1007/978-3-642-25850-3 SP - v EP - 568 PB - Springer CY - Berlin AN - OPUS4-62438 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - Ellipsometry as a production measurement tool N2 - Spectroscopic Ellipsometry is an enormously versatile measurement tool for surfaces and thin layers. We discuss the use of ellipsometry in the context of quality control in production processes of eletrconic devices. T2 - Photonics Days Berlin Brandenburg CY - Berlin, Germany DA - 09.10.2023 KW - Ellipsometry KW - Quality control KW - Metrology PY - 2023 AN - OPUS4-59837 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mull, Birte A1 - Sauerwald, T. A1 - Richter, Matthias A1 - Horn, Wolfgang A1 - Brödner, Doris A1 - Schultealbert, C. T1 - Development of a reproducibly emitting reference material for volatile organic compounds N2 - The aim of this study is the development of a reproducibly emitting reference material for volatile organic compounds (VOC). The first part of the work was carried out with styrene, for which supporting materials were successfully selected, doped and analyzed in test chambers. T2 - Indoor Air 2016 The 14th international conference of Indoor Air Quality and Climate CY - Ghent, Belgium DA - 03.07.2016 KW - Quality control KW - Emission test chamber KW - Indoor air KW - Quality assurance PY - 2016 SN - 978-0-9846855-5-4 AN - OPUS4-36849 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mull, Birte T1 - Development of a reproducibly emitting reference material for volatile organic compounds N2 - Volatile organic compounds (VOC) are ubiquitous in the indoor air, since they emit from materials used indoors. Investigations of these materials are mostly carried out in test chambers under controlled climatic conditions. Quality control of these test chamber measurements is important but there is a lack of commercially available homogenous reference materials. The approach of this study is to dope a supporting material with VOCs, which are then reproducibly released in measurable chamber air concentrations between 30 to 300 µg m ³. From several tested supporting materials vacuum grease (APIEZON M) was selected because of its very low own emissions. First tests were conducted with styrene. For the estimation of the initial emission and the emission over time FEM (finite element methods) modelling was used. Based on this, five samples with a surface of 7 cm2 and a thickness of 12 mm with a content of 1 ‰ styrene were investigated at (23 ± 2) °C and (50 ± 5) % relative humidity in the µ-chamber (3 samples) and 24 L test chambers (2 samples) for 28 days. Air samples were taken after 24 hours, 3, 7, 14, 21 and 28 days on Tenax TA® sorption tubes and analyzed by TD-GC-MS. The area specific emission rate (SERa) was calculated to compare the results from both chamber types. After 24 hours SERa was between 0.8 0.9 µg cm 2 h 1 (3800 4000 µg m 3) for the µ-chamber samples and between 0.9 1.1 µg cm 2 h 1 (300-370 µg m 3) for the 24 L test chamber samples. After 28 days the SERa was at 0.2 µg cm 2 h 1 for all samples. The relative standard deviation of the SERa was between 1 26 %. These results show the applicability of vacuum grease as supporting material and the favored starting concentration range could be achieved in the 24 L test chambers. T2 - Indoor Air 2016, the 14th international conference of Indoor Air Quality and Climate CY - Ghent, Belgium DA - 03.07.2016 KW - Emission test chamber KW - Indoor air KW - Quality assurance KW - Quality control PY - 2016 AN - OPUS4-36823 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Gook, Sergej A1 - El-sari, Bassel A1 - Biegler, Max A1 - Rethmeier, Michael T1 - Application of AI-based welding process monitoring for quality control in pipe production N2 - The paper presents the experimental results into the development of a multi-channel system for monitoring and quality assurance of the multi-wire submerged arc welding (SAW) process for the manufacture of large diameter pipes. Process signals such as welding current, arc voltage and the acoustic signal emitted from the weld zone are recorded and processed to provide information on the stability of the welding process. It was shown by the experiments that the acoustic pattern of the SAW process in a frequency range between 30 Hz and 2.5 kHz contains the most diagnostic information. The on-line quality assessment of the weld seam produced is carried out in combination with methods of artificial intelligence (AI). From the results obtained, it can be concluded that the use of the latest concepts in welding and automation technology, combined with the high potential of AI, can achieve a new level of quality assurance in pipe manufacturing. KW - Submerged arc welding KW - Artificial intelligence KW - High-strength fine-grain steels KW - Quality control PY - 2024 DO - https://doi.org/10.37434/tpwj2024.06.01 SN - 0957-798X IS - 6 SP - 3 EP - 8 PB - The Paton Publishing House AN - OPUS4-61000 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Astrid A1 - Fontana, Patrick A1 - Ziegert, Christof ED - Priebe, Nsesheye Susan ED - Schmidt, Wolfram T1 - Earthen panels - Quality control for an industrially prefabricated building component made of natural raw materials N2 - In the past few years, the share of earthen building materials used in constructions in Central Europe has increased. That is due to growing acknowledgement of its qualities regarding balancing of humidity, absorption of odours and acoustical insulation. To regulate these (mostly indoor) uses, the German Institute for Standardization (DIN) has published norms for adobe, earth mortar for masonry and earth plaster. In addition to these traditional building materials, earthen panels have been developed. As an ecological alternative to gypsum plaster boards, they combine climatic advantages of traditional materials with economic advantages of industrial processing, i.e. prefabrication and drywall techniques. Earthen panels are a composite layered material, comparable to Textile Reinforced Concrete (TRC). Most products contain an inner layer of reed tubes which improve the tensile strength and reduce the weight. Often, one or both surfaces are reinforced with a fibrous net to prevent cracks in the plastering that is usually applied on top. Additives range from straw to expanded clay. Special panels contain waxes that improve their heat storage capacity or water pipes to allow the usage as flat heating and cooling systems. T2 - 1st Symposium on Knowledge Exchange for Young Scientists (KEYS) CY - Dar es Salaam, Tanzania DA - 09.06.2015 KW - Earthen panel KW - Quality control KW - Industrial prefabrication KW - Building component KW - Natural raw material PY - 2015 SN - 978-3-9817149-3-7 N1 - Geburtsname von Priebe, Nsesheye Susan: Msinjili, N. S. - Birth name of Priebe, Nsesheye Susan: Msinjili, N. S. SP - 189 EP - 192 PB - Bundesanstalt für Materialforschung und -prüfung (BAM) CY - Berlin AN - OPUS4-36857 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Schmidt, Wolfram A1 - Tlhatlha, Pheladi A1 - Obeng, Emmanuel A1 - Tsaku, Mawuli Kwaku A1 - Arthur, Daniel Vincent A1 - Dodoo, Alex ED - Schmidt, Wolfram ED - Tlhatlha, Pheladi T1 - A practical handbook for safe, smart and durable construction in Ghana N2 - The handbook provides practical guidelines for safe, efficient, and effective construction in Ghana, focusing on proper cement use, mixing consistencies and techniques, and environmental protection. It emphasizes quality control, safety in handling construction materials, and the importance of using protective equipment to prevent health hazards. KW - Cement strength classifications KW - Cement mixing ratios KW - Quality control PY - 2025 SN - 978-3-00-083134-8 SP - 1 EP - 35 PB - Ghana Standards Authority (GSA) CY - Accra AN - OPUS4-63641 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -