Journals →  Chernye Metally →  2019 →  #4 →  Back

ArticleName Comparative analysis of methods for contactless diameter measuring for precise tubes with extra thin walls
ArticleAuthor I. N. Bazhukov, An. V. Serebryakov, Al. V. Serebryakov, S. I. Parshakov

Pervouralsk New Tube (Novotrubny) Works (Pervouralsk, Russia):

I. N. Bazhukov, Leading engineer-researcher, the group of new types of tubes for nuclear power industry, e-mail:
An. V. Serebryakov, Cand. Eng., Head of he group of new types of tubes for nuclear power industry, e-mail:


Ural Federal University (Ekaterinburg, Russia):
Al. V. Serebryakov, Cand. Eng., Associate Prof.
S. I. Parshakov, Cand. Eng., Associate Prof.


In the paper two methods of non-contact measuring of the pipe outer diameter along the entire length – ultrasonic measuring on the ROTA-25 and laser measuring on the ACDT (machine for Automatic Control the Diameter of the Tubes) are consider. The equipment specifications of these measuring units are described. The results of measuring the pipe outer diameter on them are presented. The results of studies of the measurement repeatability (test–retest reliability) on each measuring units and their measurement reproducibility among themselves are presented. It was found that the ROTA-25 in comparison with ACDT provides higher measurement repeatability (test–retest reliability) of the pipe outer diameter in repeated measurements, regardless of the pipe feeding direction into the measuring unit. It is also shown that the measuring the pipe outer diameter on the ROTA-25 provides a higher control completeness in the circumferential direction. While ACDT provides diameter control in only two cross perpendicular planes. This is due to the fact confirmed by the studies that the values of the pipe outer diameter obtained by measuring at the ACDT are always between the values of the minimum and maximum outer diameter obtained at the ROTA-25. Thus, it is guaranteed that, provided that the results of measuring of the pipe outer diameter at the ROTA-25 meet the requirements, compliance with the same requirements by measuring at the AKDT during the input control at the customer is also ensured.

keywords Thin-walled pipe, diameter measuring, non-contact measuring, laser measuring, ultrasonic measuring, measurement repeatability (test–retest reliability), measurement reproducibility

1. Bazhukov I. N., Serebryakov An. V, Serebryakov Al. V, Parshakov S. I. On the problem of diameter measuring for precise tubes with extra thin walls. Chernye Metally. 2018. No. 8. pp. 51–57.
2. GOST 8.051-81. State system for ensuring the uniformity of measurements. Permissible errors of linear dimensions to 500 mm measurements. Introduced: 01.01.1982. Moscow: Izdatelstvo standartov, 1987. 11 p.
3. Optical Metrology 2013 : Technical Summaries. 21st International Congress on Photonics in Europe Collocated with LASER 2013 World of PHOTONICS. Munich: MUNICH ICM, 2013. 153 p.
4. High-Accuracy Non-Contact Measuring Sensors. LASER SCAN MICROMETER: catalogue. Mitutoyo, 2016. 40 p.
5. Ramankutty M. et al. Non contact high precision distance measurement using single probe ultrasonic transducer. Materials of the 19th World Conference on Non-Destructive Testing WCNDT 2016. Munich, 2016. Available at: (accessed:18.05.2018)
6. ROTA 25 Plant: Operation manual. Alzenau: Nutronik GmbH, 2004. 77 p.
7. MCU 42.00: Operation manual. Alzenau: Nutronik GmbH, 2004. 15 p.
8. Process instruction 159-TR.TB-208-15. Control tubes quality at the nondestructive control plant ROTA 25: Process instruction. Pervouralsk: JSC «PNTZ», 2015. 18 p.
9. Kretov E. F. Ultrasonic flaw detection in power engineering: 4th edition, revised. SPb. : SVEN, 2014. 312 p.
10. 2320-1290 RE. Pipe diameter testing machine: Operation manual. Elektrostal, 2011. 25 p.
11. Kobzar А. I. Applied mathematical statistics. Moscow: Fizmatlit, 2006. 816 p.
12. R Core Team. R: A language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing, 2018. Available at: https: (accessed: 18.05.2018)

Language of full-text russian
Full content Buy