Mathematical and experimental investigation of sound absorption behavior of sustainable kenaf fiber at low frequency

Taban, Ebrahim; Valipour, Firouz; Abdi, Debelo Dugasa; Amininasab, Somayeh

doi:10.1007/s13762-020-03024-0

Cited by 21 publications

(5 citation statements)

References 46 publications

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“…As the density increases, the path of the pore (tortuosity) becomes more complex. In general, this makes it challenging to absorb sound, but for low frequencies with long wavelengths, it can be easily absorbed (Taban et al 2021). However, if the density increases above a certain level, the pores may become clogged and have difficulty absorbing sound.…”

Section: Sound Absorption Properties Of Coffee Groundsmentioning

confidence: 99%

Investigation of the sound-absorbing performances of pure coffee grounds

Kang

Hashitsume

Jang

2023

BioRes

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Various natural sound-absorbing materials such as rice by-products, coir fiber, date palm fiber, peanut husks, hardwood cross-sections, and forest by-products have been introduced to replace petroleum-based sound-absorbing materials in previous studies, and their sound-absorbing performance was significant. This study investigated the sound-absorbing performance of pure coffee grounds as an eco-friendly sound-absorbing material. After inserting coffee grounds into cylindrical holders with lengths of 20, 30, and 40 mm, the density of the coffee grounds was adjusted from 0.2 to 0.5 g/cm3. Then, the sound absorption coefficients were measured by an impedance tube. As the thickness and density increased, the sound absorption coefficient at low frequencies improved. However, the sound absorption coefficient at high frequencies decreased. The optimal noise reduction coefficient (NRC) of coffee grounds investigated in this study was 0.61 at a density of 0.3 g/cm3 and thickness of 50 mm. This result shows a sound-absorbing performance that is comparable to other natural sound-absorbing materials. This study concludes that coffee grounds have high use-value as an eco-friendly sound-absorbing material.

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Section: Sound Absorption Properties Of Coffee Groundsmentioning

confidence: 99%

Investigation of the sound-absorbing performances of pure coffee grounds

Kang

Hashitsume

Jang

2023

BioRes

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“…Plant fibers-such as hemp, oil palm, jute, curauá, bamboo, and kenafwhen incorporated in different composites, have multiple applications in the construction industry [43,60,68,73,153,[219][220][221]. In addition, the plant fibers can also be used as potential materials for insulation, acoustic, and architectural applications, i.e., subtypes of construction and building materials [18][19][20][21][22][23][24][25]. Plant fibers are considered to be more appropriate materials to meet the needs of the modern era, such as three-dimensional flexibility and forest management, while achieving a building that is both functional and aesthetically pleasing.…”

Section: Application Of Plant Fibers As Construction and Building Mat...mentioning

confidence: 99%

“…Figure 2 depicts the natural plant fibers' broader classification, as presented in [14]. Almost 2000 types of plant fibers are available globally, e.g., wheat straw, coir, palm, kenaf, sugarcane bagasse, cotton, bamboo, basalt/wool, flax, corn, hemp, hay, jute, henequen, ramie, sisal, banana, and pineapple leaf [15][16][17][18][19][20][21][22][23][24][25]. Some plant fibers are shown in Figure 3.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Review of Types, Properties, Treatment Methods and Application of Plant Fibers in Construction and Building Materials

et al. 2022

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Sustainable development involves the usage of alternative sustainable materials in order to sustain the excessive depletion of natural resources. Plant fibers, as a “green” material, are progressively gaining the attention of various researchers in the field of construction for their potential use in composites for stepping towards sustainable development. This study aims to provide a scientometric review of the summarized background of plant fibers and their applications as construction and building materials. Studies from the past two decades are summarized. Quantitative assessment of research progress is made by using connections and maps between bibliometric data that are compiled for the analysis of plant fibers using Scopus. Data refinement techniques are also used. Plant fibers are potentially used to enhance the mechanical properties of a composite. It is revealed from the literature that plant-fiber-reinforced composites have comparable properties in comparison to composites reinforced with artificial/steel fibers for civil engineering applications, such as construction materials, bridge piers, canal linings, soil reinforcement, pavements, acoustic treatment, insulation materials, etc. However, the biodegradable nature of plant fibers is still a hindrance to their application as a structural material. For this purpose, different surface and chemical treatment methods have been proposed in past studies to improve their durability. It can be surmised from the gathered data that the compressive and flexural strengths of plant-fiber-reinforced cementitious composites are increased by up to 43% and 67%, respectively, with respect to a reference composite. In the literature, alkaline treatment has been reported as an effective and economical method for treating plant fibers. Environmental degradation due to excessive consumption of natural resources and fossil fuels for the construction industry, along with the burning of waste plant fibers, can be reduced by incorporating said fibers in cementitious composites to reduce landfill pollution and, ultimately, achieve sustainable development.

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“…Numerous sound absorption materials have been developed to alleviate the rapidly increasing noise pollution. The fundamental of sound absorption materials is to absorb sound via the attenuation of sound energy 1 – 4 . There are several conventional ways 5 – 7 to obtain the attenuation of sound energy: the conversion to heat through the friction between material surface and air molecules, the consumption of sound energy by cavity resonance and film vibration, etc.…”

Section: Introductionmentioning

confidence: 99%

Down-film as a new non-frame porous material for sound absorption

Zhang,

Hou

et al. 2024

Sci Rep

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Down-polyethylene film material has been introduced for the first time as an excellent non-frame sound absorber, showing a distinctively outstanding performance. It contains down fiber adjacent to each other without firm connection in between, forming a structure of elastic fiber network. The unique structure has broadband response to sound wave, showing non-synchronous vibration in low and middle frequency and synchronous vibration in middle and high frequency. The broadband resonance in middle and high frequency allows the structure to achieve complete sound absorption in resonance frequency band. Moreover, down-polyethylene film material possesses forced vibration, corresponding sound absorption coefficient has been obtained based on vibration theory. The down-film sound absorption material has the characteristics of light weight, soft, environment-friendly, and has excellent broadband sound absorption performance.

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Mathematical and experimental investigation of sound absorption behavior of sustainable kenaf fiber at low frequency

Cited by 21 publications

References 46 publications

Investigation of the sound-absorbing performances of pure coffee grounds

Investigation of the sound-absorbing performances of pure coffee grounds

A Comprehensive Review of Types, Properties, Treatment Methods and Application of Plant Fibers in Construction and Building Materials

Down-film as a new non-frame porous material for sound absorption

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