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Article

The Effect of Deflections and Elastic Deformations on Geometrical Deviation and Shape Profile Measurements of Large Crankshafts with Uncontrolled Supports

1
Faculty of Marine Engineering, Maritime University of Szczecin, 1-2 Wały Chrobrego St., 70-500 Szczecin, Poland
2
Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, Kielce, 7 Tysiąclecia Państwa Polskiego Ave., 25-314 Kielce, Poland
3
Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, 19 Piastów Ave., 70-310 Szczecin, Poland
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(19), 5714; https://doi.org/10.3390/s20195714
Received: 16 September 2020 / Revised: 5 October 2020 / Accepted: 6 October 2020 / Published: 8 October 2020
(This article belongs to the Special Issue Measurement Methods in the Operation of Ships and Offshore Facilities)
This article presents a multi-criteria analysis of the errors that may occur while measuring the geometric deviations of crankshafts that require multi-point support. The analysis included in the paper confirmed that the currently used conventional support method—in which the journals of large crankshafts rest on a set of fixed rigid vee-blocks—significantly limits the detectability of their geometric deviations, especially those of the main journal axes’ positions. Insights for performing practical measurements, which will improve measurement procedures and increase measurement accuracy, are provided. The results are presented both graphically and as discrete amplitude spectra to make a visual, qualitative comparison, which is complemented by a quantitative assessment based on correlation analysis. View Full-Text
Keywords: crankshaft; geometrical error; finite element model; eccentricity; Fourier series; discrete Fourier transform crankshaft; geometrical error; finite element model; eccentricity; Fourier series; discrete Fourier transform
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MDPI and ACS Style

Nozdrzykowski, K.; Adamczak, S.; Grządziel, Z.; Dunaj, P. The Effect of Deflections and Elastic Deformations on Geometrical Deviation and Shape Profile Measurements of Large Crankshafts with Uncontrolled Supports. Sensors 2020, 20, 5714. https://doi.org/10.3390/s20195714

AMA Style

Nozdrzykowski K, Adamczak S, Grządziel Z, Dunaj P. The Effect of Deflections and Elastic Deformations on Geometrical Deviation and Shape Profile Measurements of Large Crankshafts with Uncontrolled Supports. Sensors. 2020; 20(19):5714. https://doi.org/10.3390/s20195714

Chicago/Turabian Style

Nozdrzykowski, Krzysztof, Stanisław Adamczak, Zenon Grządziel, and Paweł Dunaj. 2020. "The Effect of Deflections and Elastic Deformations on Geometrical Deviation and Shape Profile Measurements of Large Crankshafts with Uncontrolled Supports" Sensors 20, no. 19: 5714. https://doi.org/10.3390/s20195714

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