Filtern
Erscheinungsjahr
Dokumenttyp
- Vortrag (23)
- Beitrag zu einem Tagungsband (16)
- Beitrag zu einem Sammelband (9)
- Buchkapitel (7)
- Zeitschriftenartikel (5)
- Posterpräsentation (3)
- Handbuch (2)
- Forschungsbericht (2)
- Sonstiges (1)
Referierte Publikation
- nein (68) (entfernen)
Schlagworte
- Sensorik (7)
- Messtechnik (6)
- Structural health monitoring (4)
- Monitoring (3)
- Maschinenbau (2)
- Schadensdetektion (2)
- Accelerometer (1)
- Adaptives mathematisches Modell (1)
- Additive Fertigung (1)
- Air-based (1)
- Application (1)
- Artificial intelligence (1)
- Ausgleichsrechnung (1)
- Bauelement (1)
- Berlin Main Station (1)
- Bildverarbeitung (1)
- Bridges (1)
- Characterisation (1)
- Condition monitoring (1)
- Data processing (1)
- Data science (1)
- Data-fusion (1)
- Datenwissenschaft (1)
- Defect evaluation (1)
- Determination procedure (1)
- Differential displacements (1)
- Digital image correlation (1)
- Digital image correlation (DIC) (1)
- Digitale Bildkorrelation (DIC) (1)
- Digitalisierung (1)
- Digitization (1)
- Drop test (1)
- Dynamic testing (1)
- Dynamische Tests (1)
- Energietechnik (1)
- Experimental-analytical symbiosis (1)
- Fertigung (1)
- Fibre-optic sensor (1)
- Hazardous scenarios (1)
- Heiz- und Klimatechnik (1)
- Hydraulic levelling system (1)
- Kernreaktor (1)
- Konstruktion (1)
- Künstliche Intelligenz (1)
- Lagrangesche Methode (1)
- Lagrangian Multipliers (1)
- Langzeit-Monitoring (1)
- Laser-based displacement measuring system (1)
- Localization (1)
- Long-term monitoring (1)
- Materials evaluation (1)
- Measurement Methods for Composition and Structure (1)
- Measurement Methods for Material Performance, Modelling and Simulation Methods (1)
- Measurement Methods for Material Properties (1)
- Measurement uncertainty (1)
- Mesh routing (1)
- Mess- und Regelungstechnik (1)
- Modellgestützte Messverfahren (1)
- Multi-hop (1)
- Multi-sensor system (1)
- Non-destructive testing (1)
- Normung Roadmap (1)
- Optical Fibres (1)
- Plastic optical fibres (1)
- Qualitative test result (1)
- Quantitative test result (1)
- Reliability (1)
- Result uncertainty (1)
- Röntgengrobstrukturanalyse (1)
- Safety management (1)
- Schadensfrüherkennung (1)
- Sensing (1)
- Sensors (1)
- Spannungs-Dehnungs-Kurve (1)
- Specification (1)
- Split Hopkinson pressure bar (SHPB) (1)
- Standard (1)
- Standardization (1)
- Standardization roadmap (1)
- Standards (1)
- Strain (1)
- Strain measurements (1)
- Stress-strain curve (1)
- Structural Health Monitoring (1)
- Structural modelling (1)
- Structured light scanning (SLS) (1)
- Strukturschädigung (1)
- Temperature (1)
- Temperature behavior (1)
- Testing (1)
- Verfahrenstechnik (1)
- Vergleich von Modell und Messung (1)
- WSN (1)
- Zerstörungsfreie Prüfung (1)
- Zustandsüberwachung (1)
Organisationseinheit der BAM
- 8 Zerstörungsfreie Prüfung (4)
- 8.0 Abteilungsleitung und andere (2)
- 8.1 Sensorik, mess- und prüftechnische Verfahren (2)
- 8.4 Akustische und elektromagnetische Verfahren (2)
- 8.2 Zerstörungsfreie Prüfmethoden für das Bauwesen (1)
- 8.5 Röntgenbildgebung (1)
- 9 Komponentensicherheit (1)
- 9.5 Tribologie und Verschleißschutz (1)
- VP Vizepräsident (1)
- VP.1 eScience (1)
Eingeladener Vortrag
- nein (23)
In this work an air-based sensor network for the localization of persons at extensive areas is presented. The developed network consists of a localization device which the person is wearing (BodyGuard-System), a mobile relay station in the air, and a base station. All three parts communicate with the same radio chip. The BodyGuard-System is an inertial navigation system which was developed for localization in difficult environments with high accuracy and low measurement uncertainty. To increase the range of the system, a multi-hop network was built up. The measured data of the BodyGuard-System and the mobile relay station is visualized on a PC in the base station. This multi-hop network is necessary for example for fire department missions.
High quality tubular products are essential to the oil and gas industry. Quality control during their production focuses on the non-destructive detection of surface defects. The structured light technique is a candidate for the challenge to detect, monitor and evaluate such defects in real-time.
In the present study the automatic processing of structured light measurements is performed and validated. The algorithm for the automatic Analysis of inspection data has an advantage over current data evaluation methods based on individual assessments of operators.
With more than 180.000 engineers and scientists VDI Association of German Engineers and VDE Association for Electrical, Electronic & Information Technologies are belonging to the major technical and scientific associations in Europe. Both organizations promote the advancement of technology and among other things by developing recognized technical regulations as national and international standards. Since 2011 Technical Committee 2.15 Optical Measuring Methods for Structure Analysis and Monitoring as a common committee of both organizations is working among other things on the development of standards for optical measuring and testing methods. The committee consists of 27 members representing industrial users, system manufacturers, research institutes and universities. Currently the committee is drafting the new standard VDI/VDE 2626 Part 1 - Optical measuring procedures – Image correlation methods – Basics and equipment, which will be introduced in this presentation.
Draft VDI/VDE 2626 Part 1 describes practical acceptance and reverification procedures for the evaluation of the accuracy of optical measuring systems based on digital image correlation (DIC) methods. The document applies to DIC measurement systems used a) for full-field determination of two- or three-dimensional displacement of surfaces, and b) for
full-field determination of the elongation or strain of surfaces. The standard describes quality parameters as well as methods and reference objects for their determination. The quality parameters serve to specify DIC systems, and to compare different systems. They are equally suitable a) for acceptance tests as well as b) for reverification of DIC systems within the framework of a quality management system.
The acceptance test is used to determine whether the DIC system complies with the quality parameter limits specified by the manufacturer, or with contractually agreed limits by the manufacturer and user, respectively. For this test the quality parameters zero-displacement error, zero-strain error, and displacement error are defined and used. Zero-displacement error and zero-strain error describe minimum measurement uncertainties of the DIC system a user has to reckon with. They are influenced by different uncertainty contributions. The quality parameter displacement error is used to check the ability of the DIC system to determine absolute displacements within the measurement volume and to confirm the traceability of this measurement to the SI system.
Reverification of DIC systems serves to ensure long-term compliance with specified limits for the quality parameters. By comparing the results of successive reverification measurements of the quality parameters used for the acceptance test, it is possible to analyze trends with respect to changes in DIC system characteristics.
Health monitoring von größeren Strukturen erfordert die Betrachtung der gesamten Struktur, indem sowohl jener Bereich, der experimentell behandelt wird, als auch derjenige, der einer analytischen mechanischen Untersuchung unterzogen wird, in einem Gesamtzusammenhang erfasst wird. Die umfassende Behandlung des Problems gelingt dann in einer Gesamtmatrix, die im Beitrag vorgestellt wird. Auf eine Erweiterung der Methode zur Detektierung anwachsender Schädigungen wird hingewiesen.
Messtechnik und Sensorik
(2018)
Piezoresistive accelerometers use a strain-sensing element, generally made of semiconductor material, e.g., silicon to convert the mechanical motion into an electrical signal. This element is usually designed in form of a cantilever beam loaded with a mass. Acceleration causes bending of the beam, which produces a change of electrical resistance proportional to the applied acceleration.
Main advantages of piezoresistive accelerometers in comparison to other types, e.g., piezoelectric and capacitive, is their robust and highly dynamic behavior, which qualifies them for application in high impact shock applications. Mechanical damping is typically implemented with silicon oil in a way that the output signal is undistorted over a wide frequency range. These characteristics principally qualify them for the application in drop tests carried out at BAM, for which they are calibrated over the frequency range from 1 to 4 kHz. However, using silicon oil for damping, has the drawback of temperature dependent change of its viscosity, leading to temperature dependent deviation of the accelerometer’s sensitivity.
This study presents experimental results of the temperature behavior of a piezoresistive accelerometer with a dynamic range up to ±5000 g.
This type of accelerometer is applied for drop tests which are partially performed at temperatures of -40 or +100 °C.
Im Auftrag des Bundesministeriums für Wirtschaft und Klimaschutz haben DIN und DKE im Januar 2022 die Arbeiten an der zweiten Ausgabe der Deutschen Normungsroadmap Künstliche Intelligenz gestartet. In einem breiten Beteiligungsprozess und unter Mitwirkung von mehr als 570 Fachleuten aus Wirtschaft, Wissenschaft, öffentlicher Hand und Zivilgesellschaft wurde damit der strategische Fahrplan für die KI-Normung weiterentwickelt. Koordiniert und begleitet wurden diese Arbeiten von einer hochrangigen Koordinierungsgruppe für KI-Normung und -Konformität.
Mit der Normungsroadmap wird eine Maßnahme der KI-Strategie der Bundesregierung umgesetzt und damit ein wesentlicher Beitrag zur „KI – Made in Germany“ geleistet.
Die Normung ist Teil der KI-Strategie und ein strategisches Instrument zur Stärkung der Innovations- und Wettbewerbsfähigkeit der deutschen und europäischen Wirtschaft. Nicht zuletzt deshalb spielt sie im geplanten europäischen Rechtsrahmen für KI, dem Artificial Intelligence Act, eine besondere Rolle.