Direct force compensation on Lorentz force flowmeters for electrolyte flow measurements. - In: 2015 IEEE/OES eleventh current, waves and turbulence measurement (CWTM), ISBN 978-1-4799-8419-0, (2015), insges. 7 S.
http://dx.doi.org/10.1109/CWTM.2015.7098115
Temperature-dependent dynamic behavior of process temperature sensors. - In: International journal of thermophysics, ISSN 1572-9567, Bd. 36 (2015), 8, S. 2115-2123
For a number of applications in control and safety value monitoring, a profound knowledge of the dynamic behavior of process temperature sensors is of great importance. Sensor test procedures and model identification methods are state of the art for small temperature changes, i.e., steps. For wider temperature ranges, the temperature dependency of the material characteristics is significant, too. The resulting non-linearities limit the utilization of classical model concepts. In this paper, we introduce and solve a non-linear ordinary differential equation for the linear dependency of the material characteristic parameters, i.e., for the basic case of non-constant material parameters. The analytic solution will be explained, and the results are discussed and compared to a finite element method model of a basic cylinder.
http://dx.doi.org/10.1007/s10765-015-1869-4
Measurement uncertainty consideration in the case of nonlinear models for precision length measurement. - In: 2014 Joint IMEKO TC1-TC7-TC13 Symposium: Measurement Science Behind Safety and Security, (2015), 012033, insges. 6 S.
The requirements on the precision lengths and precision load measurement rise due to the rapid technical development, in particular of nanotechnologies and precision optics. According to the roadmap "Dimensional metrology for micro- and nanotechnology" of the European National Metrology Institutes (iMERA)2 in the next few years "traceable 2D (3D) metrology at (sub)-nm accuracy over several 100 mm range" will be required.
http://dx.doi.org/10.1088/1742-6596/588/1/012033
Versatile applications of laser focus probes in precision measurement technology. - In: 11th IMEKO TC14 Symposium on Laser Metrology for Precision Measurement and Inspection in Industry (LMPMI 2014), ISBN 978-1-63266-731-1, (2014), S. 29-34
Lorentz force velocimetry using electromagnetic force compensated load cells. - In: 22nd IMEKO TC3 International Conference on Measurement of Force, Mass and Torque 2014, ISBN 978-1-63266-728-1, (2014), S. 44-47
This paper discusses the flow rate measurement of poorly conducting fluids (such as electrolytes) using Lorentz force velocimetry (short: LFV). The Lorentz force caused by the moving electrolytes is in the range of micronewton. This tiny Lorentz force is determined using a high resolution force measurement systems based on electromagnetic force compensated (short: EMC) load cells. In this paper the force measurement system, the principle of LFV and the environmental influences on this kind of force measurement system are described.
Precise tiltmeter and inclinometer based on commercial force compensation weigh cells. - In: 22nd IMEKO TC3 International Conference on Measurement of Force, Mass and Torque 2014, ISBN 978-1-63266-728-1, (2014), S. 48-51
High precision measurements and monitoring of tilt or inclination are essential in the field of ultraprecise force and mass measurements. We present a new concept for high resolving tilt/ inclination measurements. Therefore a commercial electromagnetic force compensation (EMC) weigh cell is mounted in a hanging position and loaded with a defined weight. Thus the system conforms to a pendulum. By measuring the tilt depended deflection of the pendulum with the position sensor of the weigh cell we achieved a standard deviation of 7.1 nrad (3.4 nrad filtered) within a sampling time of 15 min. In future investigations we will compensate the deflection and take the compensation force as a measure for the tilt.
Entwicklung von Normalen für die Charakterisierung von Asphären-Messgeräten. - In: DGaO-Proceedings, ISSN 1614-8436, Bd. 115.2014, A31, insges. 2 S.
Zur Charakterisierung optischer und taktiler Asphären-Messgeräte sind Oberflächen notwendig, deren Formen weitestgehend bekannt sind. Dazu werden zum einen Normale mit typischen asphärischen Oberflächenanteilen verwendet. Zur Charakterisierung wichtiger Eigenschaften der Messgeräte werden Normale mit zusätzlichen Formanteilen benötigt.
http://www.db-thueringen.de/servlets/DocumentServlet?id=25316
Reduction of thermal effects on precise dimensional measurements. - In: Shaping the future by engineering, (2014), insges. 8 S.
http://nbn-resolving.de/urn:nbn:de:gbv:ilm1-2014iwk-168:3
Hyper- and multispectral imaging systems - a survey of different approaches at the Ilmenau University of Technology. - In: Shaping the future by engineering, (2014), insges. 11 S.
http://nbn-resolving.de/urn:nbn:de:gbv:ilm1-2014iwk-087:3
Interferometrical determination of concentric run-out errors in rotary tables for optical roundness measurement. - In: Shaping the future by engineering, (2014), insges. 11 S.
http://nbn-resolving.de/urn:nbn:de:gbv:ilm1-2014iwk-058:8