Advanced Materials Structures for Sound and Vibration Damping

Vašina, Martin

doi:10.3390/ma15041295

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…Noise is a nuisance experienced by humans as a result of machines and equipment used in everyday activities (Indrianti et al, 2016). It is also considered to be unwanted sound that is usually unpleasant, loud, or disturbing to the hearing organs and is considered to be one of the negative environmental health hazards (Vašina, 2022). Sound, in fact, is the transmission of a disturbance in a fluid or solid, most commonly in the form of a wave motion, which is initiated when an element moves the nearest particle of air, causing a pressure differential in the medium through which the wave travels (Goelzer et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

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The Potential of Sawdust and Coconut Fiber as Sound Reduction Materials

Nyumutsu,

Agyei-Agyemang,

Andoh

et al. 2023

JAETS

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In this study, biodegradable materials that could be utilized to reduce noise were examined. Sound absorption test was conducted with an impedance tube. Sawdust, coconut fiber, and expansive clay were used to create test samples. Noise reduction coefficient results for sawdust and expansive clay mixture ranged from 0.24 to 0.62. A mixture of coconut fiber and expansive clay recorded in noise reduction coefficient between 0.31 and 0.58. Coconut fiber mixed with expansive clay recorded noise reduction coefficient ranging from 0.31 to 0.58. The study findings suggests that these materials have good acoustic properties and can therefore be used as alternative noise reduction materials. These findings have important implications in reducing environmental pollution if adopted in the development of noise reducing materials.

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Section: Introductionmentioning

confidence: 99%

“…It is therefore necessary to eliminate or reduce excessive noise. This is done by converting the excessive mechanical energy of oscillating motion causing noise and acoustic energy into other types of energy, especially heat (Vašina, 2022).…”

Section: Introductionmentioning

confidence: 99%

The Potential of Sawdust and Coconut Fiber as Sound Reduction Materials

Nyumutsu,

Agyei-Agyemang,

Andoh

et al. 2023

JAETS

View full text Add to dashboard Cite

show abstract

“…On the other hand, tuning the structure's parameters (i.e., the relative density and the number of cells) will alter its mechanical properties. [1] Accordingly, lattices are currently used in a wide range of applications, including lightweight load-bearing structures, [2,[2][3][4] protective equipment, [5,6] orthopedic implants, [7][8][9] conformal cooling, [10][11][12] vibration absorbers, [13][14][15][16][17] etc.…”

Section: Introductionmentioning

confidence: 99%

A New Phenomenological Model for the Crushing Failure Mechanism Lattice Structures

Alomar

Concli

2023

Adv Eng Mater

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A new phenomenological model for lattice structures that exhibit crushing‐like failure mechanisms is presented. The model estimates the compressive stress–strain curves of such lattices based on their relative density. The model is derived from the underdamped oscillator's general equation and the rheological model's properties. The model applicability is tested on five circular cell lattice structures having various relative densities, as well as a body‐centered‐cubic and a square cell lattice, for further validation. The model accurately captures the curves’ profile qualitatively and quantitatively compared with the experimental data. A relationship between each parameter and the relative density is established to extend the model's functionality as fourth‐order polynomial equations. Additionally, the energy absorption values between the measured data and the model up to the crushing of the first layer are in relatively good agreement ranging between 2.68% and 25.3%, proving the model's effectiveness. Overall, the new phenomenological model can estimate essential features of the lattice structures based solely on the relative density while reducing the time and the cost needed during the design phase.

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Advanced Materials Structures for Sound and Vibration Damping

Abstract: The studies of sound and vibration are closely related [...]

Cited by 2 publications

References 6 publications

The Potential of Sawdust and Coconut Fiber as Sound Reduction Materials

The Potential of Sawdust and Coconut Fiber as Sound Reduction Materials

A New Phenomenological Model for the Crushing Failure Mechanism Lattice Structures

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