The article presents the amplitude measurement used in the diagnosis of hydraulic fluid leakage from the shock absorbers of passenger cars. Measures used to assess the distribution of the peak using the free vibration method with force extortion. To verify the results of study the FFT were used. In particular illustration of a random vibroacoustic process, acceleration of sprung mass for front ...

Coupled oscillators play an important role in many scientific fields, for example, in mechanics, electronics, and biology; see [1, 4] and references therein. In this paper we analyze two coupled oscillators, one of which is driven by an external periodic force. Important example of such a system is a dynamic vibration absorber which consists of a small mass, m2, attached to the primary vibratin...

The paper deals with two fundamentally different approaches for active control of engine-induced vibrations in automotive vehicles. On the one hand the well-known adaptive feedforward approach with a reference sensor is presented. On the other hand the use of feedback structures is also discussed. Both approaches for active vibration control have been simulated and tested intensively in a passe...

The objective of robust design is to optimise the mean and minimize the variability that results from uncertainty represented by noise factors. The various objective functions and analysis techniques used for the Taguchi based approaches and optimisation methods are reviewed. Most applications of robust design have been concerned with static performance in mechanical engineering and process sys...

the application of energy absorbing systems in the structures are one of the main methods in attenuation of earthquake effects. in this paper, the vibration control of structures by using of tube inversion systems is considered. in this novel system, the energy is dissipated by the inversion of a metal tube. this energy dissipater has large energy absorbing capacity along with constant stiffnes...

A light and fully flexible artificial muscle fabricated by 3D printing is able to instantly promote its stiffness an induced fringe electric field with different voltages, which then implemented as a semi-active absorber for vibration attenuation.