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Citation link: https://nbn-resolving.de/urn:nbn:de:gbv:46-00105617-15
00105617-1.pdf
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Ultraschallbasiertes in situ Geometrie-Messsystem für dünnwandige Stahlringe


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Other Titles: Ultrasonic in situ measuring system for the geometry of thin-walled steel rings
Authors: Stöbener, Dirk  
Supervisor: Goch, Gert 
1. Expert: Goch, Gert 
Experts: Karpuschewski, Bernhard  
Abstract: 
The thesis presents a new ultrasound based in situ measuring system, which is able to determine the wall thickness variations of thin-walled steel rings from signal phase measurements. It is applied in the workspace of a horizontal turning center and delivers information about the ring behavior for different turning operations and clamping conditions. Additionally, it can be used to determine the set-values for a control system, which establishes a constant wall thickness by fast movements of a turning tool servo for clamping-distorted rings. The measuring system consists of a signal generator, control electronics, a 15 MHz transducer and a PC system for data acquisition and evaluation. It is operated in the impulse-echo mode with a burst signal of 20 sine periods and uses the metal working fluid of the turning center as the coupling fluid for the sound propagation between transducer and ring. The wall thickness measuring range is 0 to 600 micrometer with an estimated uncertainty of 6 micrometer.
Keywords: Ultrasound; Ultrasonic; Measuring system; Geometry; Phase; Distortion Engineering; Coordinate Measurements; Uncertainty; Steel rings; Turning; Phase unwrapping; Approximation; Fourier Transform; Sound velocity; Sound wavelength
Issue Date: 20-Jul-2016
Type: Dissertation
Secondary publication: no
URN: urn:nbn:de:gbv:46-00105617-15
Institution: Universität Bremen 
Faculty: Fachbereich 04: Produktionstechnik, Maschinenbau & Verfahrenstechnik (FB 04) 
Appears in Collections:Dissertationen

  

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