Agricultural Engineering, Volume 53 (2021)

MEASUREMENT OF VIBRATIONS OF AGRICULTURAL MACHINES BY USING MOIRE METHOD

Kazimieras Ragulskis*, Rimas Maskeliūnas**, Arvydas Pauliukas***, Petras Paškevičius****, Algimantas Bubulis*, Anatolii Korpach*****, Liutauras Ragulskis***
*Kaunas University of Technology; **Vilnius Gediminas Technical University; ***Vytautas Magnus University; ****Company “Vaivora”; *****National Transport University, Kyiv

Abstract

This paper is a full article on the basis of the material presented in the two conference thesis. In the process of investigation of dynamics and vibrations of agricultural machines various experimental methods are used. Among them moiré methods can be noted because of their simplicity and easy applicability. Projection moiré is most often used for this purpose. It is used to visually estimate the shape of the eigenmode by projecting moire grating to a flat part of the case of the agricultural machine. Time averaging is applied when investigating vibrations of the structure according to the eigenmode. In this paper possibilities of application of hybrid experimental – numerical procedures for measurements of large amplitude vibrations by reflection moiré are investigated.

Keyword(s): elastic structure, hybrid experimental – numerical procedures, large amplitude vibrations, time averaged moiré, reflection moiré.


References

V. Maskeliūnas, R. Maskeliūnas, P. Paškevičius, L. Ragulskis. Measurement of vibrations of a wing. Journal of Measurements in Engineering, 2016, 4(3), 183-187 p. DOI: https://doi.org/10.21595/jme.2016.17772.

V. Maskeliūnas, R. Maskeliūnas, K. Ragulskis, P. Paškevičius, L. Ragulskis. Reflection moiré for the measurement of wing vibrations. Journal of Measurements in Engineering, 2018, 6(2), 100-106 p. DOI: https://doi.org/10.21595/jme.2018.20002.

R. Maskeliūnas, K. Ragulskis, P. Paškevičius, L. Patašienė, A. Pauliukas, L. Ragulskis. Measurement of plane vibrations of a two dimensional elastic structure. Journal of Measurements in Engineering, 2015, 3(2), 42-47 p.

R. Maskeliūnas, K. Ragulskis, P. Paškevičius, L. Patašienė, L. Ragulskis. Superimposed moiré measurements of vibrations of circular structures. Journal of Measurements in Engineering, 2016, 4(1), 15-22 p.

R. Maskeliūnas, K. Ragulskis, P. Paškevičius, A. Pauliukas, L. Ragulskis. Selection of number of gaps in superimposed moiré measurements. Journal of Measurements in Engineering, 2015, 3(4), 138-144 p.

R. Maskeliūnas, K. Ragulskis, A. Pauliukas, P. Paškevičius, A. Bubulis, V. Kuzhel, L. Ragulskis. Investigation of measurement of large amplitude vibrations by using the method of reflection moire. Agricultural Engineering, 2021, 53, 1-7 p. DOI: https://doi.org/10.15544/ageng.2021.53.1.

R. Maskeliūnas; K. Ragulskis; A. Pauliukas; P. Paškevičius; A. Bubulis; L. Ragulskis, 2019. Reflection moire for the measurement of large amplitude vibrations. Modern Technologies and Prospects of Development of Motor Transport, XII International Scientific Practical Conference, Vinnytsia National Technical University, Vinnytsia, 116-118 p.

K. Ragulskis; R. Maskeliūnas; A. Pauliukas; P. Paškevičius; A. Bubulis; L. Ragulskis, 2020. Investigation of vibrations of agricultural machines by moire methods. LXXVI наукова конференцiя професорсько-викладацького складу, аспiрантiв, студентiв та спiвробiтникiв вiдокремлених структурних пiдроздiлiв унiверситету, Тези доповiдей, Нацiональний транспортний унiверситет, Kiev, 54 p.

K. Ragulskis; R. Maskeliūnas; A. Pauliukas; P. Paškevičius; L. Ragulskis, 2021. Hybrid experimental – numerical procedures for measurement of vibrations by reflection moire. LXXVII наукова конференцiя професорсько-викладацького складу, аспiрантiв, студентiв та спiвробiтникiв вiдокремлених структурних пiдроздiлiв унiверситету, Тези доповiдей, Нацiональний транспортний унiверситет, Kiev, 47 p.

M. Ragulskis, R. Maskeliūnas, L. Ragulskis, V. Turla. Investigation of dynamic displacements of lithographic press rubber roller by time average geometric moire. Optics and Lasers in Engineering, 2005, 43, 951-962 p. DOI: 10.1016/j.optlaseng.2004.10.004.

M. Ragulskis, R. Maskeliūnas, L. Ragulskis. Plotting moire fringes for circular structures from FEM results. Experimental Techniques, 2002, 26(1), 31-35 p. DOI: https://doi.org/10.1111/j.1747-1567.2002.tb00054.x.

K. Ragulskis, R. Maskeliūnas, L. Zubavičius. Analysis of structural vibrations using time averaged shadow moiré. Journal of Vibroengineering, 2006, 8(3), 26-29 p.

M. Ragulskis, L. Saunorienė, J. Ragulskienė. Interpretation of fringes produced by time average reflection moire on a circular disc. Optics and Lasers in Engineering, 2006, 44, 1209-1218 p. DOI: https://doi.org/10.1016/j.optlaseng.2005.10.006.

L. Saunorienė; M. Ragulskis, 2010. Time – Averaged Moire Fringes. Lambert Academic Publishing. P. 148.

V. A. Soifer. Компьютерная обработка изображений. (Computer processing of images). Herald of the Russian Academy of Sciences, 2001, 71(2), 119-129 p.

S. P. Timoshenko; J. N. Goodier, 1975. Теория упругости. (Theory of Elasticity). Moscow: Nauka. P. 576.

C. Vest, 1982. Голографическая интерферометрия. (Holographic Interferometry). Moscow: Mir. P. 504.


Full Text: PDF



DOI: http://dx.doi.org/10.15544/ageng.2021.53.9

Refbacks

  • There are currently no refbacks.
681 views

Agricultural Engineering ISSN 1392-1134 / eISSN 2345-0371

This journal is published under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License. Responsible editor: Dr A. Žunda.