Article
Materials Science, Multidisciplinary
Dario Magliacano, Giuseppe Catapane, Giuseppe Petrone, Kevin Verdiere, Olivier Robin
Summary: The aim of this study is to investigate the effect of embedding periodic patterns in porous materials to passively enhance their acoustic performance. The focus is on improving sound transmission loss in classical aeronautical soundproofing packages. Numerical models of acoustic packages with periodic patterns were implemented using the finite element method and the Transfer Matrix Method. Experimental testing of some proposed configurations was conducted for comparison and validation of numerical results. Various configurations of inclusions were numerically studied, including hollow cylindrical inclusions, half-cut hollow cylindrical inclusions, and cylindrical Helmholtz resonators, to evaluate the improvements in transmission loss under plane wave excitation with different incidence angles. The main contributions of this work include experimental validation of proposed acoustic meta-materials previously only studied numerically, and consideration of the effect of including a periodic pattern of Helmholtz resonators in the foam core. Numerical results were also evaluated for different incidence angles of an exciting acoustic plane wave.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Acoustics
Andrew J. Hall, George Dodd, Emilio P. Calius
Summary: Mechanical metamaterials can significantly reduce sound transmission through walls and ceilings at lower frequencies, surpassing existing passive lightweight materials. Through the design and testing of local resonance structures (LRS), it was found that LRS designs can achieve peak transmission losses up to 40 dB greater than non-resonant structures within a specified frequency range. Proper tuning of interlayer couplings and resonator stiffness can enhance the magnitude and bandwidth of attenuation in LRS systems.
Article
Materials Science, Multidisciplinary
Junjie Gu, Qingkun Zhao, Binglun Yin, Haofei Zhou, Shaoxing Qu
Summary: In this study, we propose a data-driven structural optimization approach for impedance-matching structures (IMSs) at low frequencies (0-10 kHz) by introducing a priori knowledge. Compared to the conventional impedance-gradient designs, the average sound transmission loss (TL) is reduced by 31.78% in the optimized structure. Contrary to the long-standing wisdom, an impedance-jumping layer appears in the optimized structure, which lowers TL at frequencies 0-5 kHz but increases TL at frequencies 5-10 kHz. The introduction of inhomogeneity alleviates this degradation and enhances the overall performance of the IMSs. The methodology and results of this study motivate the novel designs of high-performance acoustic metamaterials for waterborne applications.
MATERIALS & DESIGN
(2023)
Article
Acoustics
Zhe Zhang, Xinying Wang, Zhong Yuan Liu, Qiang Fan, Tian Ran Lin
Summary: This paper presents a new design of a perforated plate-type acoustic metamaterial (PAM) that can achieve designated sound insulation while allowing air ventilation and avoiding the influence of membrane pre-tension. The study analyzes the sound insulation mechanism of a typical perforated membrane-type acoustic metamaterial and confirms that the sound transmission loss peaks are due to strong wave interference. An impedance analysis using an electro-acoustic analogy further explores the sound insulation mechanism and validates the strong sound interference as the cause of the peaks. Experimental tests and finite element simulations show that the new perforated PAM design can provide good broadband sound transmission loss at low frequencies, and a practical application in reducing noise propagation from a commercial refrigerator's compressor compartment demonstrates the effectiveness of the design in terms of sound reduction and air ventilation.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Acoustics
Lucas Y. M. Sampaio, Pedro C. M. Cerantola, Leopoldo P. R. de Oliveira
Summary: The need for energy-efficient vehicles and machines often leads to the reduction of mass, which in turn affects noise and vibration. Metamaterials, particularly decorated membrane acoustic metamaterials (MAM), have shown promising results in reducing mass and providing efficient attenuation in narrow frequency bands. This study proposes a solution by assembling membranes of different shapes and sizes into a supercell, using tessellation concepts to ensure geometric compatibility and periodicity. Finite element models are used to evaluate sound transmission loss performance of unit cells, which are experimentally validated. Finally, full MAM panels are designed based on the validated models, showing attenuation band formation around the membranes' dominant frequencies and surpassing the mass law.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Acoustics
Dario Magliacano, Giuseppe Petrone, Francesco Franco, Sergio De Rosa
Summary: This paper investigates a new fuselage panel configuration with a meta-core solution to passively improve acoustic performance. Numerical simulations show that the new meta-core solution can significantly enhance sound transmission loss, with different geometric parameters affecting performance.
Article
Engineering, Mechanical
Guosheng Ji, Jingjian Xu, Jie Zhou, Wenbin Kang
Summary: This study investigates the acoustic properties and design methods of circular-interface types of acoustic metamaterials (CAMs) based on the generalized Snell's law. The results show that porous CAMs have significantly enhanced sound insertion loss compared to uniform foam materials of the same thickness.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Mechanics
Yu-Zhou Wang, Li Ma
Summary: This paper proposes a new structure that combines the pyramidal truss core sandwich structure with membrane-type metamaterials, showing good mechanical properties and excellent acoustic performance at low frequency. An analytical model and finite element method are employed to investigate the sound transmission loss (STL) performance, discussing the effects of various factors on the STL of the structure.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Zheng Zhang, Lin Bai, Liang Xu, Wei Xiang Jiang, Tie Jun Cui
Summary: This research introduces and demonstrates an acoustic prism using controllable meta-atoms that can be rotated to control the transmission direction of acoustic waves in real time, blocking waves from the opposite direction and operating in a wide frequency range.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Acoustics
Lucas Van Belle, Claus Claeys, Elke Deckers, Wim Desmet
Summary: Locally resonant metamaterials have shown great potential in noise control engineering, but the effects of nonsub-wavelength resonator spacing on sound transmission loss and the accuracy of infinite periodic structure modeling for finite structures are not well understood. Predictions of sound transmission loss enhancement based on infinite periodic structure modeling may not accurately reflect the behavior in finite structure counterparts with nonsub-wavelength resonator spacing.
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME
(2021)
Article
Acoustics
Xiangyuan Xu, Jing Zhao, Tianzhu Lu, Zhifei Chen, Ming Bao
Summary: This study utilized two-dimensional finite-difference time-domain analysis to investigate sound transmission loss (STL) of porous materials with different incident angles. The method demonstrated the feasibility of measuring STL in situ using one particle velocity-pressure sensor and one pressure sensor, and successfully calculated the STL values in numerical analysis that matched theoretical values at all incident angles investigated.
Article
Engineering, Mechanical
D. Roca, J. Cante, O. Lloberas-Valls, T. Pamies, J. Oliver
Summary: MLAM is a novel concept of acoustic metamaterials based on coupled resonance mechanisms, providing enhanced sound attenuation capabilities suitable for large scale manufacturing.
EXTREME MECHANICS LETTERS
(2021)
Article
Engineering, Mechanical
Yacob Medhin, Kamran A. Khan
Summary: The paper proposes using heterogeneous integrated metamaterials to enhance sound insulation over a broad frequency range. The research found that a broader band of sound absorption can be achieved through hybrid design. The suggested structures may be utilized for creating metamaterials with wider absorption bands for various applications.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
Article
Materials Science, Composites
Bharath Kenchappa, Kunigal Shivakumar
Summary: A novel processing technique for fabricating micro-porous materials using different size hollow microbubbles for acoustic applications is developed and demonstrated. The physical, mechanical, and thermal properties of the materials are measured and reported. By selecting the appropriate size and distribution of hollow microbubbles, an acoustic system with a targeted acoustic response can be designed and fabricated.
JOURNAL OF COMPOSITE MATERIALS
(2022)
Article
Computer Science, Interdisciplinary Applications
Jaesoon Jung, Junghwan Kook, Seongyeol Goo
Summary: A thickness optimization method for maximizing sound transmission loss (STL) using the FE-ERA method is proposed in this study. The method aims to find the optimum thickness distribution of a panel structure to maximize STL while constraining the amount of material. The effectiveness of the proposed method is validated through numerical examples.
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2022)
Review
Engineering, Multidisciplinary
Hu ZhenXing, Xu TingGe, Wang XueMin, Xie ZhiMing, Luo HuiYang, He Yong, Guo Lei, Li YuanPing, Gan RongZhu, Lu HongBing
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2018)
Article
Materials Science, Multidisciplinary
Sadeq Malakooti, Habel Gitogo Churu, Alison Lee, Saman Rostami, Samuel John May, Suzie Ghidei, Fen Wang, Qun Lu, Huiyang Luo, Ning Xiang, Chariklia Sotiriou-Leventis, Nicholas Leventis, Hongbing Lu
ADVANCED ENGINEERING MATERIALS
(2018)
Article
Chemistry, Multidisciplinary
Sadeq Malakooti, Saman Rostami, Habel Gitogo Churu, Huiyang Luo, Jenna Clark, Fabiola Casarez, Owen Rettenmaier, Soheil Daryadel, Majid Minary-Jolandan, Chariklia Sotiriou-Leventis, Nicholas Leventis, Hongbing Lu
Article
Nanoscience & Nanotechnology
Run Wang, Zhongsheng Liu, Guoyun Wan, Tianjiao Jia, Chao Zhang, Xuemin Wang, Mei Zhang, Dong Qian, Monica Jung de Andrade, Nan Jiang, Shougen Yin, Rui Zhang, Deqiang Feng, Weichao Wang, Hui Zhang, Hong Chen, Yinsong Wang, Raquel Ovalle-Robles, Kanzan Inoue, Hongbing Lu, Shaoli Fang, Ray H. Baughman, Zunfeng Liu
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Audiology & Speech-Language Pathology
Huiyang Luo, Fang Wang, Chen Cheng, Don U. Nakmali, Rong Z. Gan, Hongbing Lu
Article
Mechanics
Pruthul Kokkada Ravindranath, Samit Roy, Vinu Unnikrishnan, Xuemin Wang, Tingge Xu, Ray Baughman, Hongbing Lu
COMPOSITE STRUCTURES
(2019)
Article
Multidisciplinary Sciences
Yeye Wen, Enlai Gao, Zhenxing Hu, Tingge Xu, Hongbing Lu, Zhiping Xu, Chun Li
NATURE COMMUNICATIONS
(2019)
Article
Chemistry, Applied
Aliyeh Feghhi, Reihaneh Malakooti, Sadeq Malakooti
APPLIED ORGANOMETALLIC CHEMISTRY
(2019)
Article
Energy & Fuels
Dongyang Cao, Sadeq Malakooti, Vijay N. Kulkarni, Yao Ren, Yingjian Liu, Xu Nie, Dong Qian, D. Todd Griffith, Hongbing Lu
Summary: The study highlights the importance of resin uptake in determining the flexural properties of sandwich composites used in wind turbine blades. It is found that different resin uptake levels can significantly impact the specific flexural strength and modulus of the composite materials. Additionally, the findings suggest that the failure mode of the sandwich composites is influenced by the core stiffness and surface texture, with different types of cores exhibiting different failure mechanisms.
Article
Materials Science, Multidisciplinary
Sadeq Malakooti, A. B. M. Shaheen Ud Doulah, Yao Ren, Vijay N. Kulkarni, Rushi U. Soni, Vaibhav A. Edlabadkar, Runyu Zhang, Stephanie L. Vivod, Chariklia Sotiriou-Leventis, Nicholas Leventis, Hongbing Lu
Summary: Shape-memory poly(isocyanurate-urethane) (PIR-PUR) aerogels can return to their permanent shape through heating and exhibit an auxetic effect with a negative Poisson's ratio. This technology has potential applications in medical devices, robotics, and space structures.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Engineering, Multidisciplinary
Sadeq Malakooti, Stephanie L. Vivod, Michael Pereira, Charles R. Ruggeri, Duane M. Revilock, Daniel A. Scheiman, Haiquan Guo, Jonathan A. Salem, Othmane Benafan, James C. Johnston, Linda S. Mccorkle
Summary: This study examines the effect of incorporating fabrics into the matrix of polyimide aerogels during the gelation process. It is found that carbon fabric-based composites outperform ultra-high-molecular-weight polyethylene fabric-based counterparts. The addition of one carbon fabric reduces the out-of-plane thermal conductivity of the aerogel composites by approximately half at room temperature.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Chemistry, Physical
Sadeq Malakooti, Mohammad I. Hatamleh, Rui Zhang, Tahereh Taghvaee, Max Miller, Yao Ren, Ning Xiang, Dong Qian, Chariklia Sotiriou-Leventis, Nicholas Leventis, Hongbing Lu
Summary: The study reveals a mechanical metamaterial-like behavior in aliphatic polyurea aerogels based on their micro/nanostructure, showing broadband vibration mitigation at low frequencies. The negative dynamic material stiffness of the micro-metastructured aerogels is confirmed through simulations, covering a wider frequency range compared to previously reported locally resonant metamaterials.
Article
Materials Science, Multidisciplinary
Sadeq Malakooti, Guoqiang Qin, Chandana Mandal, Rushi Soni, Tahereh Taghvaee, Yao Ren, Huiluo Chen, Nicholas Tsao, James Shiao, Shameek Sushil Kulkarni, Chariklia Sotiriou-Leventis, Nicholas Leventis, Hongbing Lu
ACS APPLIED POLYMER MATERIALS
(2019)
Article
Acoustics
Yuanping Li, Xuemin Wang, Siyu Chen, Hongbing Lu
JOURNAL OF LOW FREQUENCY NOISE VIBRATION AND ACTIVE CONTROL
(2019)
Article
Materials Science, Ceramics
Deniz Bozoglu, Sahin Yakut, Kemal Ulutas, Deniz Deger
Summary: Thin film polyethylene oxide, produced by the thermal evaporation technique, exhibits structural and property differences compared to bulk polyethylene oxide. The dielectric constant of polyethylene oxide thin film is 10 times greater than that of bulk polyethylene oxide. There is consistency among dielectric constants, activation energies, and free volume fractions for both thin film and bulk samples. Polyethylene oxide thin film is observed to be more brittle than bulk polyethylene oxide.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Xiaozhen Fan, Zhuo Wang, Zheng Fang, Huiqun Ye, Jinju Zheng, Jianqiang Zhang, Yanjun Qin, Yao Zhai, Yanlong Miao, Zixiang Zhao, Can Yang, Jiajun He, Zhenghang Wei, Yunzhang Fang
Summary: The microscopic strain evolution and microstructural of FeCuNbSiB amorphous alloy samples were studied under both free and tensile stress annealing conditions. It was found that an amorphous-nanocrystalline structure was developed in both samples after annealing at 813 K, and the size of nanocrystals was limited by the applied stress.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Atsushi Tanaka, Atsuki Saito, Takashi Murata, Ayako Nakata, Tsuyoshi Miyazaki
Summary: Although molecular dynamics (MD) simulation is a powerful tool for investigating the atomic-scale structures of complex materials, its reliable and accurate application to multi-component glass systems faces challenges due to limited force fields (FFs) and the complexity of chemical environments. This study demonstrates the feasibility of efficient and accurate large-scale density functional theory (DFT) calculations for multi-component glass systems. The evaluation of classical FFs based on the results of large-scale DFT calculations reveals low accuracy for non-bridging oxygen atoms, and differences in Si-O-Si angle distribution and electronic structure for X = Mg.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Petr Shvets, Ksenia Maksimova, Aleksandr Goikhman
Summary: In this study, vanadium oxide xerogel samples were successfully synthesized through a liquid phase reaction and the interaction of films with water. The samples were thoroughly analyzed using X-ray diffraction and Raman spectroscopy, revealing the existence of two distinct phases. It was also discovered that previous misinterpretations regarding the high-pressure polymorph structure were due to the formation of a high-temperature phase. These findings highlight the potential for further refining and expanding the current structural models of vanadium oxide xerogel in future research efforts.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Yiran Zhang, Jing Pang, Qingchun Xiang, Dong Yang, Yinglei Ren, Xiaoyu Li, Keqiang Qiu
Summary: The effect of the volume fraction of body-centered cubic (BCC) crystal on the room temperature brittleness of Fe-based amorphous nanocrystalline alloys was investigated. Molecular dynamics simulations were conducted to obtain seven model samples with different embedded BCC nanocrystal contents. The results showed a gradient decrease in the plasticity of the alloys with different nanocrystal contents.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Moustafa Sahnoune Chaouche, Hani K. Al-Mohair, Shavan Askar, Barno Sayfutdinovna Abdullaeva, Naseer Ali Hussien, Ahmed Hussien Alawadi
Summary: In this work, a novel micromechanical data-driven machine learning framework was proposed to characterize material parameters in bulk metallic glasses. The framework utilized nanoindentation simulations with Berkovich and spherical tips to compile a vast collection of data on material behavior in BMGs. The developed machine learning model efficiently predicted critical material properties and highlighted the importance of input feature weight functions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Louisiane Verger, Vinuyan Ganesaratnam, Virginie Nazabal, Sebastien Chenu, Christophe Calers, David Le Coq, Laurent Calvez, Olivier Hernandez, Xiang-Hua Zhang
Summary: Crystallization in Ga, Sb, and Se glasses was studied, and a correlation between Se content, crystalline phases, and electrical conductivity was observed. The resulting glass-ceramics exhibited significantly higher conductivity compared to other Se-based glass-ceramics.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Seong-Sik Shin, Ga-Yeong Kim, Byeonggwan Lee, Jae-Hwan Yang, Yeon-Su Son, Jung-Hoon Choi, Jae-Young Pyo, Ki Rak Lee, Hwan-Seo Park, Hyun Woo Kang
Summary: In this study, silver tungstate-tellurite glass with different loading of AgI was developed for immobilization of radioactive iodine. The effects of increasing the amount of AgI on the glass matrix were investigated. The leaching properties of all samples were evaluated, and it was found that the release of all elements satisfied the US regulation.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Chunghee Nam
Summary: This study demonstrates the prediction performance of a CNN regression model for the magnetic entropy changes and transition temperatures of bulk metallic glasses with magnetocaloric effects. The model achieved high prediction performance, as measured by the determination coefficient and root mean square error. The results showed good agreement with experimental values and reported results.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
A. Hosny, Y. M. Moustafa, G. El-Damrawi
Summary: In this study, crystalline glass ceramics were obtained directly from glasses using an ion exchange process between lead bromide and oxygen ions. The addition of lead bromide caused significant changes in the glass structure and the formation of specific crystalline phases.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Luana Cristina Feitosa Alves, Jheimison Ferreira Gomes, Natacya Fontes Dantas, Maria Nayane Queiroz, Pablo Nabuco Portes, Francielle Sato, Nilma de Souza Fernandes, Karina Miyuki, Celso Vataru Nakamura, Alysson Steimacher, Franciana Pedrochi
Summary: This study evaluated the influence of CaF2 addition on the bioactivity of the samples. The results showed that the samples exhibited good bioactivity and cytocompatibility, making them suitable for biomedical applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
N. Keninger, S. Feller
Summary: The principles of Topological Constraint Theory (TCT) were used to study alkali borate and silicate glass systems. Structural models were developed based on experimental data and used to predict properties of the glass.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Hao Wang, Chengliang Zhao, Chuntao Chang, Shengli Zhu, Zhankui Zhao
Summary: The relationship between the heterogeneous structure and structural relaxation in metallic glasses was explored by investigating the quasielastic and viscoelastic behavior of a Zr55Cu30Ni5Al10 metallic glass. Stress-annealing treatment was used to retain elastic strain energy, and a unique creep recovery phenomenon was observed during the reheating process. The Maxwell model was employed to qualitatively describe the mechanisms of elastic strain energy retention and release.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Sihyung Lee, Giyeol Han, Karuppasamy Pandian Marimuthu, Hyungyil Lee
Summary: This study presents a method for extracting FVM parameters of Zr-based TFMG using MD and FEA, and validates the method through simulation and experiments.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Nedra Saad, Mohamed Haouari, Mayssa Ibrahim, Noura Amamou
Summary: In this work, we investigated the optical properties of a fluorophosphate glass system doped with Tb3+ and Eu3+ ions. We found that the emitted light can be tuned by changing the doping concentration, excitation wavelength, or excitation power, which is important for the design of solid-state lighting sources.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)