Development of a Multi Degree-of-Freedom Vibration Exciter for Laboratory Applications

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Oyedeji O.I. 1 Apalowo R.K. 1,* Dahunsi O. A. 1 Audu A. 2

1. Federal University of Technology Akure, P.M.B. 704 Akure, Nigeria

2. Kaduna Polythecnic, P. M. B. 2021, Kaduna, Nigeri

* Corresponding author.


Received: 28 Jul. 2020 / Revised: 12 Aug. 2020 / Accepted: 6 Sep. 2020 / Published: 8 Dec. 2020

Index Terms

Vibration Exciter, Eccentric Mass, Mechanical Vibration, Design, Fabrication.


Introduction of vibration to manufacturing operations such as casting and welding has proved to improve the physical and mechanical properties of manufactured parts. A vibration exciter is developed for the purpose of generating and inducing vibration, along different degrees of freedom, on objects placed on its surface. The equipment applies an eccentric mass drive system which gives the equipment an overall advantage in varying the vibration parameters. The acceleration of the vibratory motion of the equipment was measured using an accelerometer and oscilloscope set-up. The natural frequencies of the different vibration modes are also obtained from a developed mathematical model executed using the MATLAB Simulink software. The developed equipment successfully generated random sinusoidal vibrations of accelerations ranging from −5 m/s^2 to 8 m/s^2 along the principal axes and angular accelerations ranging from −40 rad/s to 40 rad/s about the pitch and roll axes. Natural frequencies of f_x = 3.78 Hz, f_θ = 7.94 Hz and f_φ = 9.89 Hz are obtained along the vertical, pitch and roll directions respectively. The presented results indicate that the developed machine successfully satisfied the proposed hypothesis of being able to measure vibrational characteristics along different degrees of freedom.

Cite This Paper

Oyedeji O.I., Apalowo R.K., Dahunsi O.A.,Audu A., "Development of a Multi Degree-of-Freedom Vibration Exciter for Laboratory Applications ", International Journal of Engineering and Manufacturing (IJEM), Vol.10, No.6, pp.1-10, 2020. DOI: 10.5815/ijem.2020.06.01


[1]T. Tamura, M. Toshiro, M. Kenji, Effect of mechanical vibrations on microstructure refinement of Al-Si alloys, The Minerals, Metals and Material Society 11 (2011) 827–830.

[2]O. Dahunsi, A. Audu, The effects of vibration on the mechanical properties of low-carbon steel welded joints, NSE Technical Transaction 41 (2006) 61–72.

[3]F. Eshan, L. Dechao, K. Radovan, Application of vibration in the laser powder deposition process, Journal of Manufacturing Process 11 (2009) 38–44.

[4]A. Audu, O. Dahunsi, The effect of vibration on the impact strength and fracture resistance of welded point of low-carbon steel (0.18%c), Spectrum Journal 10 (2003) 12.

[5]N. Omura, Y. Murakami, M. Li, T. Tamura, K. Miwa, H. Furukawa, M. Harada, M. Yokoi, Effects of mechanical vibration on macrostructure and mechanical properties of ac4c aluminium alloy castings, Materials Transactions 50 (2009) 2578–2583.

[6]Z. Zhao, Z. Fan, X. Dong, B. Tang, D. Pan, J. Li, Influence of mechanical vibration on the solidification of a lost foam cast 356 alloy, China Foundry 7 (2010) 24–29.

[7]R. Thoguluva, M. Sayuti, S. Sulaiman, Effects of mechanical vibrations on the properties, microstructure and fractography of titanium carbide particulate reinforced lm6 alloy composite castings, Indian Foundry Journal 58 (2012) 12. 

[8]A. Abugh, I. Kuncy, Microstructure and mechanical properties of vibrated castings and weldments: A review, Journal of Engineering Studies and Research 19 (2013) 7–12.

[9]Y. Zuo, X. Fu, Q. Zhu, L. Li, P. Wang, J. Cui, Effect of electromagnetic vibration on the microstructure of direct chill cast al-zn-mg-cu alloy (2016).

[10]Y. Jianbo, R. Zhongming, E.Weile, D. Kang, Z. Yunbo, Effect of electromagnetic vibration on the structure and mechanical properties of al-si alloy during directional solidification, Acta Metallurgical Sinica 22 (2009) 35–39.

[11]R. Travieso, A. Jose, G. Gomez, J. Jorba-Peiro, D. Carrillo, A. Gilles, G. Joel, A. Hernan, Experimental study on the mechanical effects of the vibration-assisted ball-burnishing process, Materials and Manufacturing Processes 30 (2015) 1490–1497.

[12]P. Sakthivel, P. Sivakumar, Effect of vibration in tig and arc welding using aisi316 stainless steel, International Journal of Engineering Research and Science and Technology 3 (2014) 11.

[13]R. Apalowo, D. Chronopoulos, G. Tanner, Wave interaction with defects in pressurised composite structures, Journal of Nondestructive Evaluation 37 (2018) 48.

[14]A. Pawar, S. Vajre, S. Patil, A. Badade, K. Sasane, Design and fabrication of mechanical vibration exciter, International Journal of Mechanical Engineering and Technology 7 (2016) 58–75.

[15]V. Wowk, Machinery Vibration: Measurement and Analysis, Book-Mart Press Inc, USA, 1991.

[16]N. Anekar, V. Ruiwale, S. Nmbalkar, P. Rao, Design and testing of unbalanced mass mechanical vibration exciter, International Journal of Research in Engineering and Technology 3 (2014) 107–112.

[17]J. Gregory, Analysis of vibratory equipment using the finite element method, Unpublished Thesis, Graduate School, University of Wisconsin-Stout (2011) 222.

[18]M. Sayuti, S. Sulaiman, B. Baharudin, M. Arifin, T. Vijayaram, S. Sujara, Influence of mechanical vibration molding process on the tensile properties of tic reinforced lm6 alloy composite castings, Advances in Mechanical Engineering 2 (2012) 13–17.

[19]R. Khurmi, J. Gupta, A Textbook of Machine Design, Eurasia Publishing House, New Delhi, 2005.

[20]A. Hall, A. Holowenko, H. Laughlin, Theory and Problems of Machine Design, McGraw-Hill Book Co., Singapore, 1982.

[21]V. Bhandari, Machine Design Data Book, McGraw-Hill Education, 2014