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- W4362238189 abstract "The work deals with an experimental investigation over the influence of probing form error on form measurements using Computed Tomography. In a first part of the investigation, a 2 mm sphere on a reference ball bar was scanned for probing form error (PForm) evaluation. A study was carried out involving different scan parameter settings, i.e., magnification, image averaging, gain, number of projections, and position in the measurement volume. Scanning was performed on a Zeiss Metrotom 800 CT-scanner. The results show that probing form error will decrease with increased magnification. For a fixed magnification, the probing form error can be reduced by increasing the parameters affecting the scanning time, i.e., image averaging and number of projections. In a second part of the investigation, an industrial injection moulded Cyclic Olefin Copolymer (COC) tubular component was scanned, and roundness was measured of the external and internal cylindrical surfaces showing the impact of magnification on the error of the roundness determined using CT scanning. Reference measurements on the component were carried out using a Zeiss O-Inspect CMM. Both probing form error and measured component roundness decrease with increased magnification. A conclusion from our investigation is that the effect of magnification is important in connection with measurement of form and also dimensions that are influenced by form. An overall conclusion from the investigation is that reducing the scanning time by scanning several objects together is problematic in connection with measurement of form but also in connection with dimensions which depend on form." @default.
- W4362238189 created "2023-04-05" @default.
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- W4362238189 date "2019-03-01" @default.
- W4362238189 modified "2023-10-17" @default.
- W4362238189 title "On the impact of probing errors on form measurement in Computed Tomography" @default.
- W4362238189 doi "https://doi.org/10.58286/23729" @default.
- W4362238189 hasPublicationYear "2019" @default.
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