Study of the Sound Absorption Properties of 3D-Printed Open-Porous ABS Material Structures

Noise pollution is a negative factor that affects our environment. It is, therefore, necessary to take appropriate measures to minimize it. This article deals with the sound absorption properties of open-porous Acrylonitrile Butadiene Styrene (ABS) material structures that were produced using 3D printing technology. The material’s ability to damp sound was evaluated based on the normal incidence sound absorption coefficient and the noise reduction coefficient, which were experimentally measured by the transfer function method using an acoustic impedance tube. The different factors that affect the sound absorption behavior of the studied ABS specimens are presented in this work. In this study, it was discovered that the sound absorption properties of the tested ABS samples are significantly influenced by many factors, namely by the type of 3D-printed, open-porous material structure, the excitation frequency, the sample thickness, and the air gap size behind the sound-absorbing materials inside the acoustic impedance tube.

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Effect of the Pore Shape and Size of 3D-Printed Open-Porous ABS Materials on Sound Absorption Performance

Materials ◽

10.3390/ma13204474 ◽

2020 ◽

Vol 13 (20) ◽

pp. 4474

Author(s):

Katarina Monkova ◽

Martin Vasina ◽

Peter Pavol Monka ◽

Drazan Kozak ◽

Jan Vanca

Keyword(s):

Sound Absorption ◽

Negative Impact ◽

Excitation Frequency ◽

Volume Ratio ◽

Acrylonitrile Butadiene Styrene ◽

Normal Incidence ◽

Absorption Properties ◽

Absorption Performance ◽

3D Printed ◽

Material Volume

Noise has a negative impact on our environment and human health. For this reason, it is necessary to eliminate excessive noise levels. This paper is focused on the study of the sound absorption properties of materials with open-porous structures, which were made of acrylonitrile butadiene styrene (ABS) material using additive technology. Four types of structures (Cartesian, Octagonal, Rhomboid, and Starlit) were evaluated in this work, and every structure was prepared in three different volume ratios of the porosity and three different thicknesses. The sound absorption properties of the investigated ABS specimens were examined utilizing the normal incidence sound absorption and noise reduction coefficients, which were experimentally determined by the transfer function method using a two-microphone acoustic impedance tube. This work deals with various factors that influence the sound absorption performance of four different types of investigated ABS material’s structures. It was found, in this study, that the sound absorption performance of the investigated ABS specimens is strongly affected by different factors, specifically by the structure geometry, material volume ratio, excitation frequency of an acoustic wave, material’s thickness, and air space size behind the tested sound-absorbing materials.

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Sound Absorption Characteristics of Porous Steel Manufactured by Lost Carbonate Sintering

MRS Proceedings ◽

10.1557/proc-1188-ll07-04 ◽

2009 ◽

Vol 1188 ◽

Cited By ~ 1

Author(s):

Miao Lu ◽

Carl Hopkins ◽

Yuyuan Zhao ◽

Gary Seiffert

Keyword(s):

Absorption Coefficient ◽

Pore Size ◽

Sound Absorption ◽

Single Layer ◽

Normal Incidence ◽

Sound Absorption Coefficient ◽

Absorption Coefficients ◽

Impedance Tube ◽

Absorption Characteristics

AbstractThis paper investigates the sound absorption characteristics of porous steel samples manufactured by Lost Carbonate Sintering. Measurements of the normal incidence sound absorption coefficient were made using an impedance tube for single-layer porous steel discs and assemblies comprising four layers of porous steel discs. The sound absorption coefficient was found not to vary significantly with pore size in the range of 250-1500 μm. In general, the absorption coefficient increases with increasing frequency and increasing thickness, and peaks at specific frequencies depending on the porosity. An increase in porosity tends to increase the frequency at which the sound absorption coefficient reaches this peak. An advantage was found in using an assembly of samples with gradient porosities of 75%-70%-65%-60% as it gave higher and more uniform sound absorption coefficients than an assembly with porosities of 75%.

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A Basic Study on the Absorption Properties and Their Prediction of Heterogeneous Micro-Perforated Panels: A Case Study of Micro-Perforated Panels with Heterogeneous Hole Size and Perforation Ratio

Acoustics ◽

10.3390/acoustics3030031 ◽

2021 ◽

Vol 3 (3) ◽

pp. 473-485

Author(s):

Midori Kusaka ◽

Kimihiro Sakagami ◽

Takeshi Okuzono

Keyword(s):

Sound Absorption ◽

Prediction Method ◽

Normal Incidence ◽

Homogeneous Material ◽

Absorption Properties ◽

Basic Study ◽

Absorbing Materials ◽

Predicted Values ◽

Different Diameters

Micro-perforated panels (MPPs) are one of the most promising alternatives to conventional porous sound-absorbing materials. Traditionally, the theory of the sound absorption properties of MPPs is based on the assumption that MPPs are a homogeneous material with identical pores at regular intervals. However, in recent years, some MPPs have not met these conditions, and although a variety of designs have been created, their properties and prediction methods were studied in only fewer works. In this paper, considering the wide variety of MPP designs, we made a trial production of heterogeneous MPPs, which are MPPs with holes of different diameters, and studied the prediction method applicable to these MPPs. We measured the normal incidence sound absorption characteristics of those MPPs, backed by a rigid backing and air-cavity in-between, in an impedance tube. The prediction method proposed in this work is to treat the heterogeneous MPPs as combinations of several homogeneous components, and to combine them after applying the existing theory on homogeneous MPPs to each component. As a result, except in a few cases, the measured and predicted values of the absorption properties agreed relatively well. We also found that the arrangement of the holes in the material and the depth of the back cavity affected the agreement between the measured and predicted results.

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Extension of the frequency range of normal-incidence sound absorption coefficient measurement in impedance tube using four or eight microphones

Acoustical Science and Technology ◽

10.1250/ast.39.335 ◽

2018 ◽

Vol 39 (5) ◽

pp. 335-342 ◽

Cited By ~ 1

Author(s):

Akira Sanada ◽

Kazuhiro Iwata ◽

Hiroshi Nakagawa

Keyword(s):

Absorption Coefficient ◽

Sound Absorption ◽

Normal Incidence ◽

Sound Absorption Coefficient ◽

Frequency Range ◽

Impedance Tube ◽

Coefficient Measurement

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Preparation of polycarbonate/poly(acrylonitrile-butadiene-styrene)/mesoporous silica nanocomposite films and its rheological, mechanical, and sound absorption properties

Journal of Applied Polymer Science ◽

10.1002/app.45777 ◽

2017 ◽

Vol 135 (5) ◽

pp. 45777 ◽

Cited By ~ 2

Author(s):

Sora Sim ◽

Oh Min Kwon ◽

Kyung Hyun Ahn ◽

Hyeong Rae Lee ◽

Yeon June Kang ◽

...

Keyword(s):

Mesoporous Silica ◽

Sound Absorption ◽

Acrylonitrile Butadiene Styrene ◽

Nanocomposite Films ◽

Absorption Properties ◽

Silica Nanocomposite ◽

Poly Acrylonitrile ◽

Butadiene Styrene

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Monitoring method of scattering at specimen in high-frequency measurement of normal-incidence sound-absorption-coefficient utilizing impedance tube

Acoustical Science and Technology ◽

10.1250/ast.40.250 ◽

2019 ◽

Vol 40 (4) ◽

pp. 250-258

Author(s):

Akira Sanada ◽

Hiroshi Nakagawa

Keyword(s):

Absorption Coefficient ◽

High Frequency ◽

Sound Absorption ◽

Normal Incidence ◽

Frequency Measurement ◽

Sound Absorption Coefficient ◽

Monitoring Method ◽

Impedance Tube

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Quantitative schlieren measurements in a normal incidence acoustic impedance tube

The European Physical Journal Special Topics ◽

10.1140/epjst/e2010-01228-9 ◽

2010 ◽

Vol 182 (1) ◽

pp. 113-124 ◽

Cited By ~ 2

Author(s):

Q. Song ◽

C. Moreno ◽

F. Liu ◽

L. Cattafesta

Keyword(s):

Acoustic Impedance ◽

Normal Incidence ◽

Impedance Tube

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Preparation of natural bio-based Eucommia ulmoides gum/styrene-butadiene rubber composites and the evaluation of their damping and sound absorption properties

Polymer ◽

10.1016/j.polymer.2020.123292 ◽

2021 ◽

Vol 213 ◽

pp. 123292

Author(s):

Renwei Cao ◽

Linhui Deng ◽

Zhibo Feng ◽

Xiuying Zhao ◽

Xiaolin Li ◽

...

Keyword(s):

Sound Absorption ◽

Styrene Butadiene Rubber ◽

Eucommia Ulmoides ◽

Butadiene Rubber ◽

Rubber Composites ◽

Absorption Properties ◽

Eucommia Ulmoides Gum ◽

Styrene Butadiene

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Acoustic Panels Made of Paper Sludge and Clay Composites

Sustainability ◽

10.3390/su13020637 ◽

2021 ◽

Vol 13 (2) ◽

pp. 637

Author(s):

Tomas Astrauskas ◽

Tomas Januševičius ◽

Raimondas Grubliauskas

Keyword(s):

Absorption Coefficient ◽

Sound Absorption ◽

Composite Panel ◽

Sound Absorption Coefficient ◽

Core Material ◽

Paper Sludge ◽

Frequency Range ◽

Absorption Properties ◽

Air Gaps ◽

The Core

Studies on recycled materials emerged during recent years. This paper investigates samples’ sound absorption properties for panels fabricated of a mixture of paper sludge (PS) and clay mixture. PS was the core material. The sound absorption was measured. We also consider the influence of an air gap between panels and rigid backing. Different air gaps (50, 100, 150, 200 mm) simulate existing acoustic panel systems. Finally, the PS and clay composite panel sound absorption coefficients are compared to those for a typical commercial absorptive ceiling panel. The average sound absorption coefficient of PS-clay composite panels (αavg. in the frequency range from 250 to 1600 Hz) was up to 0.55. The resulting average sound absorption coefficient of panels made of recycled (but unfinished) materials is even somewhat higher than for the finished commercial (finished) acoustic panel (αavg. = 0.51).

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