Measurement method research for Micro-CT system based on combined calibrator

SHA Tongtong; HU Xiaodong; ZHAO Jintao; ZOU Jing

doi:10.5768/JAO202041.0409802

Journal of Applied Optics > 2020 > 41(4): 810-815. > DOI: 10.5768/JAO202041.0409802

SHA Tongtong, HU Xiaodong, ZHAO Jintao, ZOU Jing. Measurement method research for Micro-CT system based on combined calibrator[J]. Journal of Applied Optics, 2020, 41(4): 810-815. DOI: 10.5768/JAO202041.0409802

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Measurement method research for Micro-CT system based on combined calibrator

School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin 300110, China

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Received Date: September 28, 2019
Revised Date: October 22, 2019
Available Online: June 14, 2020

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Abstract

Abstract

In order to ensure the measurement accuracy of the Micro-Computed Tomography (Micro-CT) system, a combined measurement mode of the calibrator and the sample was adapted to design the combined calibrator which can be used for the combined measurement, and a method to correct the proportional error and the threshold error in the measurement process of the Micro-CT system was proposed. Without changing the scanning parameters of the Micro-CT system, the samples of polytetrafluoroethylene, a light material commonly used in aerospace, were measured independently and compared with the measurements based on the combined calibrator. The results show that compared with the sample independent measurement method, the proposed method can effectively reduce the measurement error of 1 μm~4 μm and has better robustness.
- Micro-CT,
- combined calibrator,
- 3D reconstruction,
- measurement accuracy

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References

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Measurement method research for Micro-CT system based on combined calibrator