Sound absorption performance of the acoustic absorber fabricated by compression and microperforation of the porous metal

Bai, Panfeng; Yang, Xiaocui; Shen, Xinmin; Zhang, Xiaonan; Li, Zhizhong; Yin, Qiang; Jiang, Guoliang; Yang, Fei

doi:10.1016/j.matdes.2019.107637

Cited by 47 publications

(34 citation statements)

References 29 publications

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“…According to these optimal structural parameters of the composite sound-absorbing structures obtained in Section 2.2.2, finite element simulation of the sound absorption property of the composite structure was conducted in the virtual acoustic laboratory [28][29][30][31], and the constructed simulation model is shown in Figure 3. The size of the standing wave tube was 60 mm × 60 mm × 300 mm, and its front surface was treated as the acoustic source inlet for transmission of the incident sound wave.…”

Section: Finite Element Simulationmentioning

confidence: 99%

“…Similar with the polyurethane foam, porous metal was another common porous material used in the field of sound absorption [8,17,22,27,29,33,35]. Besides common standard porous metal, some novel sound absorbers had been proposed, such as uniform compressed porous metal [35], gradient compressed porous metal [8,22,27], microperforated compressed porous metal panel [29], and so on. The horizontal comparisons of the actual average sound absorption coefficient of the optimal composite sound absorbing structure with that of other porous materials were conducted when total thickness was 20 mm, as shown in Table 5.…”

Section: Comparisons With the Other Porous Materialsmentioning

confidence: 99%

“…Proposed optimal composite structure 0.5296 0.6482 Utilized original polyurethane foam 0.1885 0.3392 Standard porous metal [27] 0.1529 0.2477 Uniform compressed porous metal [27] 0.2098 0.4531 Gradient compressed porous metal [27] 0.3325 0.5412 Microperforated compressed porous metal panel [29] 0.1657 0.3403…”

Section: -1000 100-2000mentioning

confidence: 99%

“…Afterwards, identification of acoustic characteristic parameters of the polyurethane foam and optimization of structural parameter of the composite structure were realized through the cuckoo search algorithm [24][25][26][27]. Later, the composite structure was verified by the finite element simulation method [28][29][30][31] and validated through the standing wave tube measurement [32][33][34][35]. Finally, the accuracy of identified acoustic characteristic parameters of the polyurethane foam and effectiveness of improved sound absorption performance of the composite structure were proved.…”

Section: Introductionmentioning

confidence: 99%

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Improving and Optimizing Sound Absorption Performance of Polyurethane Foam by Prepositive Microperforated Polymethyl Methacrylate Panel

et al. 2020

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Sound absorption performance of polyurethane foam could be improved by adding a prepositive microperforated polymethyl methacrylate panel to form a composite sound-absorbing structure. A theoretical sound absorption model of polyurethane foam and that of the composite structure were constructed by the transfer matrix method based on the Johnson–Champoux–Allard model and Maa’s theory. Acoustic parameter identification of the polyurethane foam and structural parameter optimization of the composite structures were obtained by the cuckoo search algorithm. The identified porosity and static flow resistivity were 0.958 and 13078 Pa·s/m2 respectively, and their accuracies were proved by the experimental validation. Sound absorption characteristics of the composite structures were verified by finite element simulation in virtual acoustic laboratory and validated through standing wave tube measurement in AWA6128A detector. Consistencies among the theoretical data, simulation data, and experimental data of sound absorption coefficients of the composite structures proved the effectiveness of the theoretical sound absorption model, cuckoo search algorithm, and finite element simulation method. Comparisons of actual average sound absorption coefficients of the optimal composite structure with those of the original polyurethane foam proved the practicability of this identification and optimization method, which was propitious to promote its practical application in noise reduction.

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Section: Finite Element Simulationmentioning

confidence: 99%

Section: Comparisons With the Other Porous Materialsmentioning

confidence: 99%

Section: -1000 100-2000mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving and Optimizing Sound Absorption Performance of Polyurethane Foam by Prepositive Microperforated Polymethyl Methacrylate Panel

et al. 2020

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“…Porous metal and microperforated metal panels are two common materials for sound absorption [13], and both have the advantage of a low fabrication cost, good loading capacity, high mechanical strength, and so on [14][15][16], which make the large-scale manufacture and application of sound absorbers made with these two materials feasible. Bravo and Maury [17] studied the physical mechanisms involved in the sound attenuation and absorption of a microperforated panel backed by anisotropic fibrous material, which provided guidelines for further parametric or impedance optimization research.…”

Section: Introductionmentioning

confidence: 99%

Low Frequency Sound Absorption by Optimal Combination Structure of Porous Metal and Microperforated Panel

et al. 2019

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The combination structure of a porous metal and microperforated panel was optimized to develop a low frequency sound absorber. Theoretical models were constructed by the transfer matrix method based on the Johnson—Champoux—Allard model and Maa’s theory. Parameter optimizations of the sound absorbers were conducted by Cuckoo search algorithm. The sound absorption coefficients of the combination structures were verified by finite element simulation and validated by standing wave tube measurement. The experimental data was consistent with the theoretical and simulation data, which proved the efficiency, reliability, and accuracy of the constructed theoretical sound absorption model and finite element model. The actual average sound absorption coefficient of the microperforated panel + cavity + porous metal + cavity sound absorber in the 100–1800 Hz range reached 62.9615% and 73.5923%, respectively, when the limited total thickness was 30 mm and 50 mm. The excellent low frequency sound absorbers obtained can be used in the fields of acoustic environmental protection and industrial noise reduction.

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Production and Tensile Behavior of Novel Powder Wire Mesh Composite Porous Plates

Zhou

2021

Adv Eng Mater

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A new type of powder wire mesh composite porous plate (PWMCPP) is successfully fabricated by the composite rolling and solid‐state sintering of stainless steel powder and wire mesh. Tensile tests are carried out, and the microstructure and fracture morphology are observed. The results show that the tensile strength of the PWMCPP decrease first and then increase with increasing mesh volume fraction and mesh diameter and increase with increasing sintering temperature. It is found that when the mesh volume fraction exceeds 65% and the sintering temperature exceeds 1310 °C, the tensile properties of the PWMCPP show the phenomenon of secondary plastic deformation work hardening with a saddle shape change. The tensile strength increased from 433 to 593 MPa, with an increase ratio of 36.95%, and the elongation increased from 33.17% to 55.7%, with an increase ratio of 67.92%. Herein, not only a method for preparing a composite of stainless steel powder and mesh is offered but also a useful reference for improving the tensile properties of the PWMCPP and expanding the application range (especially in the field of porous bearing) of porous metal materials is provided.

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Sound absorption performance of the acoustic absorber fabricated by compression and microperforation of the porous metal

Cited by 47 publications

References 29 publications

Improving and Optimizing Sound Absorption Performance of Polyurethane Foam by Prepositive Microperforated Polymethyl Methacrylate Panel

Improving and Optimizing Sound Absorption Performance of Polyurethane Foam by Prepositive Microperforated Polymethyl Methacrylate Panel

Low Frequency Sound Absorption by Optimal Combination Structure of Porous Metal and Microperforated Panel

Production and Tensile Behavior of Novel Powder Wire Mesh Composite Porous Plates

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