Artykuły w czasopismach: „Sound insulation”

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Lu, Xiao Dong, Jin Hong Wang i Wei Ling Wang. "Windows Sound Insulation Research with Different Glass". Applied Mechanics and Materials 584-586 (lipiec 2014): 1868–71. http://dx.doi.org/10.4028/www.scientific.net/amm.584-586.1868.

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As the weak area of the residence envelope’s, window’s sound insulation is very important in the way of indoor quiet assurance. Base on the road traffic noise as sound sources, the sound insulation comparative studies is made between the insulating laminated glass and double insulated glass. The article choose two similar rooms near the Gaoerji road in Dalian assembled with the different windows, one room’s window was assembled with the insulating laminated glasses, and the other was assembled with double insulated glasses. Research shows that sound insulation effect of the wall with insulating laminated glass is better than the wall with double insulated glass 4dB.

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Geng, Sen Lin, i Fang Ju Li. "Design of the Sound Insulation Chamber for Stored Grain Insect Sound Detection". Applied Mechanics and Materials 220-223 (listopad 2012): 1598–601. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.1598.

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A six cubic meter sound insulation chamber is designed based on the principle of double-layer wall sound insulating and porous absorption with the characteristics of stored grain insect action sound. With 3 mm thick plywood as wall material, double - layer spacing 0.08 m, the outer wall being bored, each aperture 1mm, average spacing 1.5 cm, and the hard sound-absorbing material being filled in the two layers, a quasi - double layer perforated structure is built. The ambient noise is uniformly insulated between 125Hz and 2000Hz, and the average sound insulation is about 22dB, and it meets requirements of stored grain insect action sound for the spectrum and SPL. The result shows that the sound insulation chamber has the advantages of small size, economy, and good sound insulation effects.

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Sekimoto, Masami. "Sound insulation". Journal of the Acoustical Society of America 85, nr 4 (kwiecień 1989): 1806. http://dx.doi.org/10.1121/1.397943.

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Hopkins, Carl, i Heinrich A. Metzen. "Sound Insulation". Noise Control Engineering Journal 57, nr 6 (2009): 620. http://dx.doi.org/10.3397/1.3292945.

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Ribeiro, Eduardo Silveira, Ronan Adler Tavella, Guilherme Senna dos Santos, Felipe da Silva Figueira i Jorge Alberto Vieira Costa. "Thermal and acoustic insulation boards from microalgae biomass, poly-β-hydroxybutyrate and glass wool". Research, Society and Development 9, nr 4 (21.03.2020): e143942995. http://dx.doi.org/10.33448/rsd-v9i4.2995.

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Among the many functions that a building material needs to have, its insulation functions stand out. This type of materials acts by decreasing the conduction of heat/sound in to the environment. In this context, bio-insulations have been receiving an increasing attention due to its performance and the use of sustainable/naturals insulation materials. This study was conducted to evaluate the thermal and acoustic performance of bio-based boards made from the biomass of Spirulina, bacterial poly-β-hydroxybutyrate (PHB), and glass wool. The boards were manufactured under heated compression in different proportions: 33.33% glass wool, 33.33% PHB, and 33.33% Spirulina biomass (Board A); 20% glass wool, 40% PHB, and 40% Spirulina (Board B); 40% glass wool, 40% PHB, and 20% Spirulina (Board C); and 40% glass wool, 20% PHB, and 40% Spirulina (Board D). Boards A and B showed lower thermal conductivity (0.09 W m-1 K-1) compared to traditional insulating materials, such as gypsum neat (0.44 W m-1 K-1) and Kaolin insulating firebrick (0.08–0.19 W m-1 K-1). Board D showed the highest sound absorption coefficient of ~1600 Hz compared to other bio-based insulators at the same frequency, such as polypropylene based non-woven fiber and tea-leaf-fiber with the same thickness. For the noise reduction coefficient, board B showed better results than concrete. Thus, boards A and B are suitable as thermal insulators, while boards B and D are suitable as sound insulators. For simultaneous application as a thermal and sound insulator, board B is the best choice among all boards.

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Mizukoshi, Fumiya, i Hidetoshi Takahashi. "Acoustic notch filtering earmuff utilizing Helmholtz resonator arrays". PLOS ONE 16, nr 10 (19.10.2021): e0258842. http://dx.doi.org/10.1371/journal.pone.0258842.

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In recent years, noisy bustling environments have created situations in which earmuffs must soundproof only specific noise while transmitting significant sounds, such as voices, for work safety and efficiency. Two sound insulation technologies have been utilized: passive noise control (PNC) and active noise control (ANC). However, PNC is incapable of insulating selective frequencies of noise, and ANC is limited to low-frequency sounds. Thus, it has been difficult for traditional earmuffs to cancel out only high-frequency noise that people feel uncomfortable hearing. Here, we propose an acoustic notch filtering earmuff utilizing Helmholtz resonator (HR) arrays that provides a sound attenuation effect around the tuneable resonant frequency. A sheet-like sound insulating plate comprising HR arrays is realized in a honeycomb structure. Since the resonant frequency is determined by the geometry of the HR arrays, a highly audible sound region can be designed as the target frequency. In this research, the acoustic notch filtering performance of the proposed HR array plate is investigated in both simulations and experiments. Furthermore, the fabricated earmuffs using the novel HR array plates achieve a sound insulation performance exceeding 40 dB at the target frequency, which is sufficiently high compared to that of conventional earmuffs. The experimental results confirm that the proposed device is a useful approach for insulating frequency-selective sound.

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Fothergill, L. C., i T. Carman. "Insulation — impact sound". Batiment International, Building Research and Practice 18, nr 4 (lipiec 1990): 245–49. http://dx.doi.org/10.1080/01823329008727048.

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Albin, Donald C. "Sound insulation system". Journal of the Acoustical Society of America 120, nr 3 (2006): 1169. http://dx.doi.org/10.1121/1.2355970.

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Bliūdžius, Raimondas, Kęstutis Miškinis, Vincent Buhagiar i Karolis Banionis. "Sound Insulation of Façade Element with Triple IGU". Buildings 12, nr 8 (14.08.2022): 1239. http://dx.doi.org/10.3390/buildings12081239.

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Sound insulation design for structural glazed façade is an important task in environmental noise control, as increased continuously repeated noise is a significant factor impacting on people’s well-being and is associated with a negative impact on their health. For façades, in addition to sound insulation, requirements for safe use and high energy efficiency are also usually raised, which partly determine the composition of the glazing: triple insulating glass unit (IGU) with inner safety laminated glass sheet. Therefore, the aim of the research was to investigate the structural sealed façade structure with triple IGU and to determine the effect of the thickness of ordinary and laminated glasses, their position in the IGU, the thickness of the gas cavities, and the mass of the structural frame on the sound insulation level of structural glazing. Experimental measurements of the sound insulation index of the investigated façade elements with IGU of various constructions were performed in an acoustic reverberation chamber according to standard procedures. The result of the study indicated that the use of the second laminated glass in a triple IGU is inefficient, the highest sound insulation indicators are achieved by increasing the thicknesses of the external glass sheet and the gas cavity; increasing the mass of the frame also has only little effect on the sound insulation of the structural glazing.

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Nakagawa, Kiyoshi. "Sound Insulation Performance of Building Structures and Materials for Sound Insulation". Seikei-Kakou 26, nr 2 (20.01.2014): 65–69. http://dx.doi.org/10.4325/seikeikakou.26.65.

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KUROSAWA, Yoshio, Takao YAMAGUCHI, Naoyuki NAKAIZUMI i Manabu TAKAHASHI. "Effect of sound insulation by adhesion of laminated sound insulation materials". Transactions of the JSME (in Japanese) 82, nr 837 (2016): 15–00664. http://dx.doi.org/10.1299/transjsme.15-00664.

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Yang, Xiaocui, Shuai Tang, Xinmin Shen i Wenqiang Peng. "Research on the Sound Insulation Performance of Composite Rubber Reinforced with Hollow Glass Microsphere Based on Acoustic Finite Element Simulation". Polymers 15, nr 3 (25.01.2023): 611. http://dx.doi.org/10.3390/polym15030611.

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The composite rubber reinforced with hollow glass microsphere (HGM) was a promising composite material for noise reduction, and its sound insulation mechanism was studied based on an acoustic finite element simulation to gain the appropriate parameter with certain constraint conditions. The built simulation model included the air domain, polymer domain and inorganic particles domain. The sound insulation mechanism of the composite material was investigated through distributions of the sound pressure and sound pressure level. The influences of the parameters on the sound transmission loss (STL) were researched one by one, such as the densities of the composite rubber and HGM, the acoustic velocities in the polymer and inorganic particle, the frequency of the incident wave, the thickness of the sound insulator, and the diameter, volume ratio and hollow ratio of the HGM. The weighted STL with the 1/3 octave band was treated as the evaluation criterion to compare the sound insulation property with the various parameters. For the limited thicknesses of 1 mm, 2 mm, 3 mm and 4 mm, the corresponding optimal weighted STL of the composite material reached 14.02 dB, 19.88 dB, 22.838 dB and 25.27 dB with the selected parameters, which exhibited an excellent sound insulation performance and could promote the practical applications of the proposed composite rubber reinforced with HGM.

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Zach, Jiri, Jitka Peterková, Vít Petranek, Jana Kosíková i Azra Korjenic. "Investigation of Thermal Insulation Materials Based on Easy Renewable Row Materials from Agriculture". Advanced Materials Research 335-336 (wrzesień 2011): 1412–17. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.1412.

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Production of building materials is mostly energy consuming. In the sphere of insulation materials we mostly see rock wool based materials or foam-plastic materials whose production process is demanding from material aspect and raw materials aspect as well. At present the demand for thermal insulation materials has been growing globally. The thermal insulation materials form integral part of all constructions in civil engineering. The materials mainly fulfill the thermal insulating functions and also the sound-insulating one. The majority of thermal insulation materials are able to fulfill both of the functions simultaneously. The paper describes questions of thermal insulation materials development with good sound properties based on natural fibres that represent a quickly renewable source of raw materials coming from agriculture. The main advantage of the materials are mainly the local availability and simple renewability of the raw materials. In addition an easy recycling of the materials after their service life end in the building construction and last but not least also the connection of human friendly properties of organic materials with advanced product manufacture qualities of modern insulation materials.

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Jung, Jae-Deok, Suk-Yoon Hong, Jee-Hun Song i Hyun-Wung Kwon. "Predictions of airborne noise between unit cabins by developing a cavity transfer matrix". Noise Control Engineering Journal 69, nr 3 (1.05.2021): 229–42. http://dx.doi.org/10.3397/1/376923.

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The unit cabin has been used to construct internal ship space for improved efficiency and to reduce budgetary costs in shipbuilding. Because the cavity is placed between unit cabins, the noise of one room is transmitted through the sound insulating panel, the cavity, and the opposite sound-insulating panel. In this study, by developing a transfer matrix of the cavity between structures, airborne noise between unit cabins was predicted. A sandwich panel, which is usually used in ships, was employed to construct a double panel, and the sound insulation performance was confirmed by changing the thickness of the cavity. To improve the reliability of numerical results, they were compared with those from experiments conducted. The results showed that as the cavity size increases, the overall sound insulation performance improves. A parameter study was also conducted on the density, Young's modulus, thickness, and thickness ratio of the core of the sandwich panel. To improve the sound insulation performance, increasing the density of the core is preferable to increasing the core thickness. The panel thickness ratio should be increased to avoid performance degradation as a result of the resonance frequency.

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Shi, Geman, Xiaoxun Wu, Renjie Jiang i Shande Li. "A Particle Reinforced Gradient Honeycomb Sandwich Panel for Broadband Sound Insulation". Mathematics 11, nr 3 (17.01.2023): 502. http://dx.doi.org/10.3390/math11030502.

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The sound insulation capacity of traditional sound insulation boards is limited by the law of mass, and any improvement in sound insulation capacity contradicts the demand for light weight. In order to overcome this shortcoming, a lightweight particle reinforced gradient honeycomb sandwich panel is proposed to achieve lightweight sound insulation. The sound insulation of the particle reinforced honeycomb sandwich panel is calculated based on the transfer matrix method. The accuracy of the theory is verified through finite element simulation, and the influence of material and structural parameters on the sound insulation performance of the sandwich panel is analyzed. The results show that the sound insulation of the honeycomb sandwich panel can be significantly improved by adding reinforcement particles to the aluminum matrix, and the sound insulation also increases as the particle mass fraction of the reinforcement increases. In addition, the valley value of the sound insulation curve moves towards the low frequency direction, which indicates that the sound insulation performance of the sandwich plate at low frequencies is effectively improved.

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Yang, Ying. "Research on Aluminum Alloy Foam Sound Insulation Characteristics of New Decorative Building Materials". Applied Mechanics and Materials 380-384 (sierpień 2013): 4219–23. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.4219.

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Due to its unique physical sound insulation performance, aluminum alloy foam has become one of the new decorative building materials. Research on its sound insulation performance has also become a hot topic of materials science and other fields. Firstly, the paper analyzes the acoustic characteristics and the analysis indicators of sound insulation materials through the analysis of aluminum alloy foam characteristics and sound insulation mechanism. It finally concludes impact factor of sound insulation based on the analysis model of physical characteristics of aluminum alloy foam and sound insulation mechanism which provides a theoretical basis for the application and development of the sound insulation materials in a certain extent.

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Shin, Hye Kyung, Kyoung Woo Kim, A. Yeong Jeong i Kwan Seop Yang. "Analysis of Sound Insulation Performance of Reinforce Concrete Walls between Households According to Wall Thickness Criteria in Apartments". Applied Mechanics and Materials 873 (listopad 2017): 237–42. http://dx.doi.org/10.4028/www.scientific.net/amm.873.237.

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Sound insulation between households is properly ensured to provide a quiet residential environment in apartments. The legal requirements for sound insulation in apartments in Korea are set to meet the wall’s minimum thickness or sound insulation performance. When construction companies choose the walls that satisfy thethickness in the standards of boundary walls between households, it is difficult to know the sound insulation performance. In this study, the sound insulation performance of reinforced concrete walls is predicted according to the wall thickness criteria and analyzed through field measurements. In newly built apartments, the reinforced concrete wall’s sound insulation performance(R'w) is 56 – 66 dB, which is a similar level of the international criterion. And the sound insulation performance of the reinforced concrete wall according to thickness standards is similar to sound insulation performance standardsof Korea.

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Wei, Shang You, Xian Feng Huang, Zhi Xiang Zhuang i Jun Xin Lan. "Research on the Prediction of Impact Sound Insulation to a Homogeneous Wall". Applied Mechanics and Materials 744-746 (marzec 2015): 1593–96. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.1593.

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In this paper, a theoretical model to evaluate impact sound transmission through a homogeneous wall is proposed. The model which is based on the Statistical Energy Analysis framework exhibits a system with room-wall-room. For the purpose to explore the mechanism of impact sound transmission through a wall, the impact sound reduction index between two rooms are predicted. Meanwhile, the variation of impact sound reduction index with the walls properties are also taken into account. The results reveal that the density, elastic modulus and thickness of a homogeneous wall have diverse effects on its impact sound insulation and can be chosen adequately to achieve ideal insulation values.It provides an approach to optimize impact sound insulating properties of the walls.

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Jiang, Liang, Yi Wang Bao i Xiao Gen Liu. "Structural-Function Integration Optimization of Vacuum Insulation Panel in Construction Area". Key Engineering Materials 591 (listopad 2013): 329–33. http://dx.doi.org/10.4028/www.scientific.net/kem.591.329.

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Vacuum insulation panel is the one type of the insulation materials. The characteristics of this material are not only low thermal conductivity, good sound insulation, energy efficient, environmental protection but also with no ODS material. However, the inadequate mechanical properties of this material limit its application of insulation in construction . Thus, this research proposed the uses of the connection of structure and function of vacuum insulation panel in construction , and tested against its Sound Insulation Property. new construction sound insulation standards was adopted for evaluating the result of Sound Insulation Property to study the building insulation performance of the vacuum insulation composites

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McCullough, Francis P. "Sound and thermal insulation". Journal of the Acoustical Society of America 88, nr 2 (sierpień 1990): 1194. http://dx.doi.org/10.1121/1.399780.

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Schroer, Daniel R., i Jean‐Philippe Deblander. "IMMOTUS*, sound insulation system". Journal of the Acoustical Society of America 110, nr 5 (listopad 2001): 2749. http://dx.doi.org/10.1121/1.4777563.

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Scholl, Werner. "Book Review: Sound Insulation". Building Acoustics 16, nr 1 (styczeń 2009): 101–3. http://dx.doi.org/10.1260/135101009788066528.

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Wester, Eric C., Xavier Brémaud i Bryan Smith. "Meta-Material Sound Insulation". Building Acoustics 16, nr 1 (styczeń 2009): 21–30. http://dx.doi.org/10.1260/135101009788066555.

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Fothergill, L. C. "Sound insulation between dwellings". Applied Acoustics 24, nr 4 (1988): 321–34. http://dx.doi.org/10.1016/0003-682x(88)90087-4.

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Murzinov, Valery, Pavel Murzinov i Irina Ivanovna. "COMPARATIVE ANALYSIS OF SOUND SUPRESSING LIGHTWEIGHT STRUCTURED PANELS AND MODERN NOISE PROTECTION MEANS". Akustika 32 (1.03.2019): 30–35. http://dx.doi.org/10.36336/akustika20193230.

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This article provides an overview of modern soundproof materials and structures used for acoustic insulation. Presently, we can find plenty of such noise insulation and sound absorption materials. One of the popular means to reduce noise and control sound today is the acoustic panels able to suppress and absorb different sounds. The article also analyses the effectiveness of acoustic and sound protection materials used in the industrial sphere. The comparative analysis of the sound protection and absorption effectiveness is carried out using sound absorption coefficients. It also presents the construction of a sound suppressing lightweight structured panel designed by the authors. The authors noted that these panels have better characteristics in comparison with other modern sound protection materials.

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Zhang, Xiaoyu, i Xiamin Hu. "Comparison between Chinese Code and Eurocode on the impact sound insulation requirements of the residential floor". MATEC Web of Conferences 275 (2019): 05001. http://dx.doi.org/10.1051/matecconf/201927505001.

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At present, the impact sound insulation performance of the residential floor attracts increasing attention, which is a critical index to evaluate the physical performance of the residential building. Improving the sound insulation performance is an effective measure to improve the living quality and solve the contradictions between neighbors. Therefore, many sound insulation standards have been established to guide the design of building sound insulation. In this paper, comparisons between Chinese code and Eurocode on the impact sound insulation requirements of the residential floor were presented, including the evaluation parameter and the limit value of sound insulation. In addition, the applicability of limit value of sound insulation standard for each country was analyzed in detail through the existing experimental data of different floor structures, and then reasonable suggestions were put forward.

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Kim, Sin-Tae, Hyun-Min Cho i Myung-Jun Kim. "Effects of Wall-to-Wall Supported Ceilings on Impact Sound Insulation for Use in Residential Buildings". Buildings 11, nr 12 (26.11.2021): 587. http://dx.doi.org/10.3390/buildings11120587.

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In Korean residential buildings, floor impact sounds were reduced over the past few decades mainly through a floating floor system. However, ceiling constructions for impact sound reduction have not been applied actively because of a lack of useful information. This study focuses on the effects of wall-to-wall supported ceilings (WSC), which are designed with construction discontinuities between concrete slabs and ceilings, and the damping caused by porous absorbers for impact sound insulation. To examine the impact sound insulation according to ceiling conditions, measurements were performed in 25 floor–ceiling assemblies. The results indicate that ceiling treatment is mostly useful in reducing the floor impact sound. The floor impact sound owing to the WSC decreased by 2–7 dB and 2–8 dB in terms of the single number quantity for the tapping machine and rubber balls, respectively, compared with representative existing housing constructions wherein ceilings were attached on wooden sticks. Furthermore, the reduction effect of the WSC appeared to be more profound when it was applied to the floor–ceiling assembly with poor impact sound insulation. Thus, the WSC can be used to enhance the impact of sound insulation of existing housings without major repairs of floor structural layers.

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Anuja, N., N. Amutha Priya, P. Jeganmurugan i A. Sree Rameswari. "Investigation on the Acoustic Behaviour of Perlite in Concrete". IOP Conference Series: Earth and Environmental Science 1086, nr 1 (1.09.2022): 012042. http://dx.doi.org/10.1088/1755-1315/1086/1/012042.

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Abstract Concrete, an effective rigid material that acts as a barrier to restrict sound waves in buildings. This research study is mainly based on the experimental testing on the acoustic properties that can be induced in concrete using perlite material. When sound passes through the concrete having lower density, it gets dispersed and the decibel of sound is decreased, thus it acts as a better sound insulator. Concrete specimens along with the addition of perlite are tested for their strength and optimum dosage of perlite to be added in order to have a improved acoustic behaviour. It is identified that with 5% replacement of perlite for cement in concrete, improved the acoustic behaviour of concrete by 26.12%. In order to have adequate strength in concrete, 30% GGBS is partially replaced for cement and hence the strength is improved by 12.5%. From this work, it is depicted that perlite can act as a better material to make concrete as a sound insulator. This composite can be used in various applications in buildings as precast insulation panels, bricks, tiles etc to make sound insulation.

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Sipari, Pekka. "Sound Insulation of Multi-Storey Houses — A Summary of Finnish Impact Sound Insulation Results". Building Acoustics 7, nr 1 (marzec 2000): 15–30. http://dx.doi.org/10.1260/1351010001501471.

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Evidently a wooden house can be built so that modern requirements for both airborne and impact sound insulation are met with sufficient margins. However, low-frequency impact sounds produced by walking may be either audible to the building occupants or felt by them as non-audible vibrations. It is clear that the present rating methods and also perhaps the tapping machine are inadequate where wooden floors are concerned, because the results may be subjectively confusing. The present situation, where internationally there are several rating systems leading to different numerical results for the same building element, needs to be addressed. Existing methods should be developed into a single international method covering all types of floors. The question of how to rate low-frequency (32-100 Hz) footfall noises, which may not be simulated adequately by a tapping machine and rated with present methods, must be considered as a special problem separate from the general rating system. It is generally recommended to add to the mass and stiffness of the wooden floor (for example, by adding a concrete layer) to improve its overall vibration and impact sound insulation behaviour. Such floors are believed to better satisfy the requirements of building occupants.

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Kersh, Volodimir, Andriy Kolesnikov, Mikola Hlitsov i Sergіi Gedulyan. "Thermal and Acoustic Insulating Gypsum Composite Material with Improved Water Resistance". Tehnički glasnik 14, nr 2 (11.06.2020): 89–93. http://dx.doi.org/10.31803/tg-20181024091245.

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The article discusses methods for obtaining building heat and sound insulating composite material based on gypsum with high resistance to water. An additional characteristic is considered - the water resistance index, in which the role of material strength in the wet state is enhanced. The proposed characteristic is used to optimize the heat and sound insulating composition based on gypsum. The material contains matrix gypsum-cement-ash binder and a mixture of aggregates. The result of the planned experiment shows that the water resistance index more adequately reflects the strength of the composite in the wet state compared to the softening coefficient. An optimization of the complex properties of the composite is given in accordance with its intended purpose. As a result of the study, an optimal waterproof composition with improved thermal insulation and sound insulation characteristics was obtained.

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Ju, Zehui, Qian He, Haiyang Zhang, Tianyi Zhan, Lu Hong, Yangfan Lin i Xiaoning Lu. "Calculation of Sound Insulation for Hybrid CLT Fabricated with Lumber and LVL and comparison with experimental data." MATEC Web of Conferences 275 (2019): 01012. http://dx.doi.org/10.1051/matecconf/201927501012.

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The insulated predictions were carried out for LVL, CLT and HCLT in order to evaluate their sound properties, in which the theoretical value of sound insulation was predicted by regarding the substances in wood cell wall as equivalence to specific medium based on Biot model, and the wood anatomical characteristics, such as the length and diameter of tracheid, diameter of pit, and porosity, were taken into account for determining the equivalent density and bulk modulus of elasticity of wood cell wall. By comparing the tested and predicted values of sound insulation, the conclusion were drawn as follows: the predicted values of sound insulation were significantly correlated with the tested values for LVL, CLT and HCLT. As for Masson pine and Southern pine, the adjacent of earlywood and latewood was considered as sandwich structure for the calculation of sound insulation. Meanwhile, the bonding interface was creatively introduced to improve the accuracy of sound insulation prediction. The transfer function involved in sound insulation prediction provide an effective method to characterize the sound insulation volume of wood composite in construction and decoration areas.

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Fediuk, Roman, Mugahed Amran, Nikolai Vatin, Yuriy Vasilev, Valery Lesovik i Togay Ozbakkaloglu. "Acoustic Properties of Innovative Concretes: A Review". Materials 14, nr 2 (14.01.2021): 398. http://dx.doi.org/10.3390/ma14020398.

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Concrete is the most common building material; therefore, when designing structures, it is obligatory to consider all structural parameters and design characteristics such as acoustic properties. In particular, this is to ensure comfortable living conditions for people in residential premises, including acoustic comfort. Different types of concrete behave differently as a sound conductor; especially dense mixtures are superior sound reflectors, and light ones are sound absorbers. It is found that the level of sound reflection in modified concrete is highly dependent on the type of aggregates, size and distribution of pores, and changes in concrete mix design constituents. The sound absorption of acoustic insulation concrete (AIC) can be improved by forming open pores in concrete matrices by either using a porous aggregate or foam agent. To this end, this article reviews the noise and sound transmission in buildings, types of acoustic insulating materials, and the AIC properties. This literature study also provides a critical review on the type of concretes, the acoustic insulation of buildings and their components, the assessment of sound insulation of structures, as well as synopsizes the research development trends to generate comprehensive insights into the potential applications of AIC as applicable material to mitigate noise pollution for increase productivity, health, and well-being.

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Wu, Xian, TengLong Jiang, JianWang Shao, GuoMing Deng i Meng Zhao. "Influence of automobile sealing rib structure on sound insulation performance and optimization of section parameters". INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, nr 1 (1.08.2021): 5769–79. http://dx.doi.org/10.3397/in-2021-3289.

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The door sealing strip plays an important role in the sound insulation of the car, and its sound insulation performance has a great influence on the sound quality and comfort of the vehicle. The sound insulation performance of the seal can be analyzed by Finite Element-Statistic Energy Analysismodel. There are great differences in the cross-section of the door sealing strip system at different positions, which leads to the difference of sound insulation. Therefore, it is very important to study the sound insulation performance of the sealing strip by studying the parameters of different sections. This paper explores the influence of the structure of automobile sealing rib on the sound insulation performance. Taking the sound power of the receiving end of the sealing strip as the index, the orthogonal optimization test is carried out for the simplified section shape of the door seal strip: the wall thickness of the sealing strip, the height of the sealing strip and the rib length. The optimal combination of a set of sealing strip sections is established, and the sound insulation performance of the sealing strip is improved.

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Min, Xinghua, Ming Chen i Ting Qu. "Sound Insulation Performance Analysis of New Energy - saving Lightweight Wooden Wall". IOP Conference Series: Earth and Environmental Science 966, nr 1 (1.01.2022): 012007. http://dx.doi.org/10.1088/1755-1315/966/1/012007.

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Abstract In this paper, a kind of light energy-saving prefabricated building high sound insulation wood wall is designed, and its sound insulation performance is experimentally studied in practical housing applications. Firstly, an energy-saving wood wall is designed on the basis of a sound insulation calculation with weighted sound transmission loss of 44.0 dB. Secondly, the energy-saving wood wall is implemented in practical house applications and the corresponding sound insulation of the wall is measured for evaluation. Measurement results show that the actual weighted sound transmission loss of the wall is 24.0 dB. Further analysis indicates that the gaps of the plates and rigid connections are the main causes of the sound insulation decrease in the actual application of this lightweight wall. This paper provides the design method of lightweight walls for new energy-saving light prefabricated houses, and indicates the importance of optimizing the construction details to guarantee the overall sound insulation performance of energy-saving light prefabricated houses.

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Huang, Xian Feng, i Yi Min Lu. "Sound Insulation Inversion to an Attached Room in Buildings". Applied Mechanics and Materials 209-211 (październik 2012): 267–71. http://dx.doi.org/10.4028/www.scientific.net/amm.209-211.267.

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With respect to the higher sound insulation need of the buildings, the attached room may be considered to adopt. A calculation model is applied to predict the sound insulation of a specified attached room. Realistic sound insulation inversion, furthermore, is consistent with the procedure of engineering practice. By the artificial immune algorithm (AIA), the inverse sound insulation prediction model is developed, which adjust the insulation of each element (wall, door and window etc.) and sound absorption of the attached room. Under agreeing with the reasonable configuration of an attached building and meeting sound insulation requirement simultaneously, it was found that acoustic properties of each member within a whole attached room were obtained. As a consequence, the material and even the configuration of each wall can also be determined. It will be beneficial to building design.

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36

Lian, Xiao, Shengsheng Wang, Maolin Liu, Songhui Nie, Jinfeng Peng, Zhuo Zhou i Jiu Hui Wu. "Study on low frequency sound insulation characteristic of thin acoustic black hole". Modern Physics Letters B 35, nr 12 (9.02.2021): 2150198. http://dx.doi.org/10.1142/s0217984921501980.

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We use numerical and experimental methods to investigate the low frequency sound insulation characteristic of designed thin acoustic black hole (ABH). The numerical results show that the sound energy focusing effect plays a leading role in low frequency sound insulation of designed ABH, and the reflection at the edge of ABH is the main reason of sound insulation in medium and high frequencies. Experimental results display that the Sound Transmission Loss (STL) of the designed ABH is higher than 30 dB below 700 Hz, which shows that the isolated acoustic waves are more than 95%. The low frequency sound insulation performance of proposed ABHs is much better than the traditional acoustic materials, which has great potential applications for low frequency sound insulation.

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Nowoświat, Artur, Rafał Żuchowski, Michał Marchacz i Leszek Dulak. "Sound insulation of wooden floors". E3S Web of Conferences 49 (2018): 00077. http://dx.doi.org/10.1051/e3sconf/20184900077.

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The objective of the article is to assess acoustic insulation of a wooden floor structure between stories in a pre-war residential building. The measurements involved acoustic insulation against impact sounds and airborne sounds. The article presents the results of acoustic tests for noninsulated floors and then for floors insulated with mineral wool. First, the results of the research were analyzed in terms of single-number acoustic insulation rates. These results were compared to the standards and findings described by other researchers. Then, an analysis was carried out for the processes as a function of frequency. The conclusions described in this article allow us to assess the applied acoustic insulation system.

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Dariusz, Pleban, i Mikulski Witold. "Methods of Testing of Sound Insulation Properties of Barriers Intended for High Frequency Noise and Ultrasonic Noise Protection". Strojnícky casopis – Journal of Mechanical Engineering 68, nr 4 (1.12.2018): 55–64. http://dx.doi.org/10.2478/scjme-2018-0047.

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AbstractTwo test stands for determining sound insulation in the frequency range above 5 kHz were made. One consisted of two horizontally adjacent reverberation rooms and a special source of high frequency sounds and ultrasounds. The other test stand consisted of a miniaturized test chamber and a special source of ultrasounds. The paper presents results of the preliminary measurements of sound insulation properties of different barriers in the frequency range above 5 kHz.

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L. Murzinov, V., P. V. Murzinov, Yu V. Murzinov, V. I. Buyanov i V. A. Popov. "Mathematical modeling of sound insulation for sound suppressing lightweight structured panels (SSLWSP)". International Journal of Engineering & Technology 7, nr 2.13 (15.04.2018): 109. http://dx.doi.org/10.14419/ijet.v7i2.13.11621.

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The article presents SSLWSP panels, the feature of which is a small weight and good soundproofing properties. The article acquired the model of sound insulation for SSLWSP panels. The modeling of sound insulation is based on the sound-permeability model of thin iso-tropic sheet material, from which SSLWSP panels are made. An experimental verification of the obtained sound insulation model showed the convergence of experimental and theoretical values. The best convergence of theoretical and experimental data falls on the frequencies corresponding to a speech range.

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Yuchao, Ma, Mo Juan, Xu Ke, Li Xiang i Sun Xinbo. "Material Parameters Acquisition and Sound Insulation Performance analysis of Membrane-type Acoustic Metamaterials Applied for Transformer". E3S Web of Conferences 136 (2019): 01031. http://dx.doi.org/10.1051/e3sconf/201913601031.

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As a light-weight and ultra-thin artificial material, acoustic metamaterial have more different attributes than natural material. The study of sound insulation for acoustic metamaterial is hot, and the membrane-type acoustic metamaterials supplement the deficiency of linear sound insulation materials. The physical material parameters (young modulus and loss factors)of base material of membrane-type acoustic metamaterials (PVC) is obtained by cantilever beam dynamic measurement method. The acoustic metamaterial sound insulation analysis is simulated by CAE method based on the material parameters that measured. The configuration of the simulation accuracy is measured on impedance tube, and the design work of the acoustic metamaterial sound insulation for transformer is provided. The relationship between sound insulation and the mass on membrane-type acoustic metamaterial at the different frequencies (100Hz to 500Hz) provides the reference to set sound insulation frequency.

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41

Lakatos, Ákos. "Novel Thermal Insulation Materials for Buildings". Energies 15, nr 18 (14.09.2022): 6713. http://dx.doi.org/10.3390/en15186713.

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Using thermal insulation materials to reduce energy loss in buildings is a key action. For reducing the building’s energy use, firstly, the internal unheated spaces (attics, cellars) should be insulated, followed by the insulation of the external walls, and changing the doors and windows. Finally, the building can be completed with the renovation/maintenance of its service systems. Newly designed and constructed buildings are subject to increasingly strict regulations, which highlight the minimization and elimination of wasteful energy use and the resulting emissions of harmful substances. Therefore, the use of thermal insulation is the first step in making buildings more energy efficient. In this editorial, seven articles covering thermal insulation possibilities and topics are highlighted. This paper reflected on the use of thermal insulations both for internal and external applications. This editorial also promotes the use of super insulation materials such as aerogels and vacuum insulation panels; furthermore, the possible applications of bio-based insulations are also endorsed. In this paper, the sound insulation capabilities of some materials are also emphasized, and they will be presented from the point of view of cost.

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Wiebusch, Julie A. "Seattle’s Sound Transit Residential Sound Insulation Program reduces sound sustainably." Journal of the Acoustical Society of America 126, nr 4 (2009): 2308. http://dx.doi.org/10.1121/1.3249517.

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Zhang, Xin Zhong, i Rui Yan Pang. "Factors and Countermeasures Impacting Sound Insulation Performance of Light Steel Structure House Wall". Advanced Materials Research 368-373 (październik 2011): 501–4. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.501.

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The sound insulation performance of Light steel structure wall directly affects the quality of housing and people’s feeling. A theoretical analysis of the wall of light steel structure residential sound insulation performance is done, and some solutions in poor lightweight wall sound insulation measures is proposed.

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Wu, Shuangshuang, i Wei Xu. "Sound Insulation Performance of Furfuryl Alcohol-Modified Poplar Veneer Used in Functional Plywood". Materials 15, nr 18 (6.09.2022): 6187. http://dx.doi.org/10.3390/ma15186187.

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Plywood has poor sound insulation due to its insufficient areal density, which cannot satisfy the demands of an indoor acoustic environment. This report proposed to use furfuryl alcohol to impregnate poplar veneer as a raw material for plywood and explored the sound insulation potential of furfuryl alcohol-modified poplar veneer. The effect of different formulations on the sound insulation performance of modified veneers was discussed, such as furfuryl alcohol concentrations, catalyst categories, and solvent categories. The weight percent gain (WPG) and areal density (AD) were used to evaluate the impregnation effectiveness of furfuryl alcohol modification. The sound insulation was measured by the impedance tube method. The results showed that the WPG of the furfuryl alcohol-modified veneers was evident, and the AD was effectively improved. Furthermore, the average sound insulation of furfuryl alcohol-modified poplar veneer was 25.68~40.10 dB, which increased by 10.8~19.1% compared with that of unmodified veneer. The modified veneer with 50% furfuryl alcohol concentration, taking isopropanol as a solvent, and maleic anhydride as a catalyst, had the optimal sound insulation performance. At the same time, the cell microstructure and chemical components were characterized by scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and Brunauer–Emmett–Teller (BET) theory to explain the sound insulation mechanism further. The results showed that the distortion of cell walls was improved, suggesting a change in the mechanical properties of the cell wall. At the same time, more micropores formed since the filling of furfuryl alcohol resin, yielding a tortuous propagation pathway, so the sound insulation performance improved. Finally, it demonstrated the potential of furfuryl alcohol-modified poplar veneer as raw material to prepare plywood with excellent sound insulation.

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Rong, Fabing, Zhongjie Cheng i Peijie Liu. "Study on Sound Insulation Performance of Pressure Relief Wall of Transformer Chamber". INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, nr 1 (1.08.2021): 5197–202. http://dx.doi.org/10.3397/in-2021-3004.

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The problem of noise nuisance in indoor substation becomes more and more sensitive. The noise emission index of substation has become an important technical index of substation design. The noise control of indoor substation mainly adopts "auxiliary noise reduction technology" such as sound absorption, sound insulation and vibration isolation. The sound insulation performance of the pressure relief wall in the main transformer room of indoor substation is the key link of noise control. In order to reduce the noise interference, this paper selects the common sound insulation structure of the pressure relief wall, analyzes the main influencing factors of noise reduction, selects the sound insulation structure suitable for the pressure relief wall in the main transformer room of indoor substation, and tests the effectiveness of noise reduction of the sound insulation structure in the actual case. Based on the research results, the sound absorption structure in the main transformer room is arranged on the other indoor wall outside the pressure relief wall, and the pressure relief wall mainly considers the structure of sound insulation, which can effectively reduce the noise impact of the main transformer room.

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Nurzyński, Jacek. "Sound insulation of bulkhead panels". Applied Acoustics 179 (sierpień 2021): 108061. http://dx.doi.org/10.1016/j.apacoust.2021.108061.

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Dlhý, Dušan, i Peter Tomašovič. "Sound Insulation Determination of Door". Advanced Materials Research 1057 (październik 2014): 215–22. http://dx.doi.org/10.4028/www.scientific.net/amr.1057.215.

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The structural complexity of a door causes difficulties in the description of its behavior from an acoustical point of view. In many cases, even a small change can cause a big difference in its sound-isolating properties. To determine the acoustical quality of a door, it is important to perform laboratory measurements of the door structure and door frame, the gaps including. A mathematical analysis based on experimental measurements of the sound reduction index of several door constructions was used to determine the acoustical door categories. The equations for calculating the sound reduction index, which were introduced in this paper, should help in the design of a suitable door from an acoustical point of view.

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Kang, Hyun‐Ju, Sang‐Ryul Kim i Jae‐Seung Kim. "Sound insulation performance in shipboard". Journal of the Acoustical Society of America 110, nr 5 (listopad 2001): 2712. http://dx.doi.org/10.1121/1.4777369.

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Kihlman, Tor, i Andrzej Pietrzyk. "Sound insulation at low frequencies". Journal of the Acoustical Society of America 100, nr 4 (październik 1996): 2734. http://dx.doi.org/10.1121/1.416824.

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Gahlau, Heinemann, Manfred Hoffmann i Norbert Seemann. "Sound insulation part for surfaces". Journal of the Acoustical Society of America 84, nr 1 (lipiec 1988): 463. http://dx.doi.org/10.1121/1.396897.

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