  Pashin-Orlov-Smirnov-tik-72-2026-2-ru.pdf |
- 3
- The effect of the indentation from the clamp of the bit and the number of fibres in it on their estimated length according to the HVI method
- Pashin E. L., Orlov A. V., Smirnov M. A. The effect of the indentation from the clamp of the bit and the number of fibres in it on their estimated length according to the HVI method. Technologies & Quality. 2026. No 2(72). P. 18–24. (In Russ.) https://doi.org/10.34216/2587-6147-2026-2-72-18-24.
- DOI: https://doi.org/10.34216/2587-6147-2026-2-72-18-24
- УДК: 677.017.222
- EDN: LYETTQ
- Publish date: 2026-04-27
- Annotation: The aim of the work is to evaluate the possible effect on the ML value of the fibre offset from the fibre clamping line by 3.81 mm used in the HVI method when testing in a fibrograph, as well as the variability in the thickness of the fibrous layer in the bit. By simulating the formation of a fibre clamping system in a block and constructing a fibrogram, confirmation was obtained of the negative effect of the variability in the number of fibres in the bit, which reduces the accuracy of determining their average length ML by the HVI method. As the number of fibres in the bit increases, the difference between ML and the true length of the fibres increases. It was also found that with an indentation of 3.81 mm from the edge of the clamp before the start of scanning, an error in determining ML may form in the fibrograph, especially when analysing short-fibre cotton with an average length of about 20 mm. It is concluded that it is necessary to improve the method of determining the length of cotton fibres on a fibrograph by taking into account all the fibres that make up the bit and scanning it directly from the clamping line.
- Keywords: fibre, cotton, length, USTER HVI system, modelling, bit formation, fibrogram, measurement error
- Literature list: 1. Cui X., Rodgers J., Martin V. B., Watson M. An Investigation on the Sampling Bias of the Beard Method as Used in HVI. The Journal of The Textile Institute. 2010;101(11):958–966. 2. Belmasrour R., Li L., Cui X. L., Cai Y., Rodgers J. Obtaining Cotton Fiber Length Distributions from the Beard Test Method Part 2 – A New Approach through PLS Regression. The Journal of Cotton Science. 2011;15:73–79. 3. Zhou J., Wang J., Wei J., Xu B. Extracting fiber length distributions from dual-beard fibrographs with the Levenberg – Marquardt algorithm. Textile Research Journal. 2019;90:37‒48. 4. Cui X. L., Rodgers J., Cai Y., Li L., Belmasrour R.,, Pang S.-S. Obtaining Cotton Fiber Length Distributions from the Beard Test Method, Part 1 – Theoretical Distributions Related to the Beard Method. The Journal of Cotton Science. 2009;13:265–273. 5. Turner C., Sayeed M. A., Hequet E. F. Reconstruction of the cotton fiber length distribution from a High Volume Instrument® fibrogram. Textile Research Journal. 2022;93:1651–1669. 6. Hearle J. W. S., Morton W. E. Physical Properties of Textile Fibers. Cambridge, Woodhead Publ., 2008. 796 p. 7. Hertel K. L. A Method of Fiber-Length Analysis Using the Fibrograph. Textile Research Journal. 1940;10:510–525. 8. Chu Y. T., Riley C. R. New interpretation of the fibrogram. Textile Research Journal. 1997;67:897–901. 9. Ryklin D. B., Kvetkovsky D. I. Evaluation of cotton fiber quality indicators using the UsterLVI system: guidelines. Vitebsk, Vitebsk St. Tech. Univ. Publ., 2019. 40 p. (In Russ.) 10. Pashin E. L. Modeling of testing using the HVI method to estimate the length of cotton fibers with different beard parameters. Universum: technical sciences. 2025;4. URL: https://7univer-sum.com/ru/tech/ archive/item/19730 (accessed 09.03.2026). (In Russ.) 11. Pashin E. L., Orlov A. V. Computer modeling of the formation of the “beard” of short-staple fibers to evaluate the characteristics of their length in the USTER fibrograph. Universum: technical sciences. 2024;8. URL: https://7universum.com/ru/tech/archi-ve/item/18050 (accessed 09.03.2026). (In Russ.) 12. Pashin E. L., Orlov A. V., Smirnov M. A. Computer modeling of fibrogram for determining the length characteristics of short-staple fibers using the HVI method. Universum: technical sciences. 2025;1. URL: https://7universum.com/ru/tech/archive/item/19139 (accessed 09.03.2026). (In Russ.) 13. Zhumaniyazov K., Tozhimirzaev S. T., Muminov M. R. Research and evaluation of cotton fiber properties in technological processes. Izvestiya vysshih uchebnyh zavedenij. Seriya Teknologiya Tekstil’noi Promyshlennosti [Proceedings of Higher Educational Institutions. Series Textile Industry Technology]. 2022;1:162–170. (In Russ.)