Experimentation and t-Test of Viscoelastic Vibration Damping

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2016 by IJETT Journal
Volume-37 Number-1
Year of Publication : 2016
Authors : Mr. Viraj Bhushan Patil, Dr. Eknath Raghunath Deore
DOI :  10.14445/22315381/IJETT-V37P203


Mr. Viraj Bhushan Patil, Dr. Eknath Raghunath Deore"Experimentation and t-Test of Viscoelastic Vibration Damping", International Journal of Engineering Trends and Technology (IJETT), V37(1),11-14 July 2016. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Viscoelastic materials are largely used as a means to provide damping to structures, thus mitigating resonant vibration responses. The demand for silent machine operation in any of the organization is prime need in today’s environmentally conscious world. The legal aspects of noise control requires a silent and noise free operation of the machine. The vibration causes rapid wear of machine parts such as bearings and gears. Unwanted vibrations may cause loosening of parts from the machine. In this paper an attempt has been made to found a suitable Viscoelastic material which can minimize the vibration and results into less noise and efficient operation. Devices made with viscoelastic materials such as isolators, dynamic vibration neutralizers (also called dynamic vibration absorbers), sandwich panels and structural links can be designed for highly efficient vibration control. The transfer of noise can also be reduced by decoupling the components in such a way that the noise path is interrupted. This can be achieved by adding noise reducing treatments to the structure such as elastic elements, masses, local shielding or damping layers. In the present investigation, the use of viscoelastic damping layers as a noise reducing measure in rotating machinery is considered. Here in this investigation the result obtained will give frequency value in random manner and the use of t-test (testing of hypothesis) will show us that vibrations are really reduced or not.


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Viscoelastic material, Vibration, FFT analyzer, t-test.