The field of energy harvesting from the environment has emerged as a significant area of research in recent years. Acoustic energy represents a natural source of mechanical energy that can be converted into electrical ...

Metamaterials are manmade materials used due to their different properties originating from their geometry. Sound attenuation is a property, which depends on structure geometry; the small structures could reduce sound ...

Paying attention to the sound quality of mosques is one of the architectural fundamentals of Islamic societies because the mosque is the most prominent ritual place of Islam, and speech and hearing are considered its main ...

To improve teaching and learning conditions, room acoustics tries to adjust the educational environment. This research addresses the room acoustics of a small classroom in the Department of Mechanical Engineering at Isfahan ...

To improve teaching and learning conditions, room acoustics tries to adjust the educational environment. This research addresses the room acoustics of a small classroom in the Department of Mechanical Engineering at Isfahan ...

In this paper, the Bouc-Wen friction model parameters of two elastic rough interfaces are determined analytically based on multi-asperity contact theory. To this, firstly, the three main contact characteristics parameters ...

This paper analytically derives the Maxwell slip model associated with a frictional rough contact interface using the multi-asperity contact theory in the elastic region. The multi-asperity contact theory based on the ...

In the present paper, the ...

The high level of transmitted noise and vibrations of a helicopter flight to the aircrew body can cause discomfort and perhaps affect their performance and physical condition. This paper presents an active seat suspension ...

In this study, the method of multiple scales is used to perform a nonlinear vibration analysis of a mechanical system in two cases; with dry and lubricated clearance joints. In the dry contact case, the Lankarani-Nikravesh ...

Metro stations as a public space are very important in terms of speech clarity, safety and security. However, due to the size and physical-special characteristics of these spaces, the use of non-acoustic materials, providing ...

Town Board Stations (TBS) ...

In this paper, the vibration analysis methods and shock pulse method (SPM) are compared in order to detect the unhealthy condition as well as fault type in the early stages of rolling element bearing (REB) degradation. To ...

This research explores the potential of vortex-induced vibration (VIV) as a viable renewable energy source for harvesting low-speed wind energy, particularly for low-power sensors utilized in structural health monitoring. ...

The research described in this paper focuses on the application of modal strain techniques on a multi-girder bridge superstructure with the objectives of identifying the presence of damage and detecting false damage diagnosis ...

This paper presents a new method for identifying damage in bridge girders basedon modal flexibility deflections. Using modal inertia forces for spatial loaddistribution vector, a new approach for obtaining modal flexibility ...

This study focuses on the design and experimental evaluation of a road excitation simulator driven by an electro-hydraulic system. The simulator is employed to create road irregularities, which are then applied to the ...

Nonlinear localization approaches are used not only for detecting the exact location ofthe nonlinear elements in mechanical structures, but they are also exploited in order to find any possible flaws such as cracks in ...