@article{yang_li_chen_sui_chen_xu_li_fu_jing_2017, title={Sound insulation of multi-layer glass-fiber felts: Role of morphology}, volume={87}, ISSN={["1746-7748"]}, DOI={10.1177/0040517516629142}, abstractNote={ Glass-fiber felts have emerged as a popular material for noise reduction. This paper investigates the effect of various morphologies (micro-layer, macro-layer and air-layer) of glass-fiber felts on sound insulation. The sound transmission loss is measured by a Brüel & Kjár (B&K) impedance tube. The results show that the sound insulation of glass-fiber felts can be improved by increasing the number of macro-layers. The comparison between the macro- and micro-layer of glass-fiber felts on sound insulation is systematically carried out. Notably, the sound transmission loss of glass-fiber felts with similar areal density and thickness favors macro-layer structures over micro-layer structures. A simple model is established to explain this phenomenon. In addition, the sound transmission loss exhibits period fluctuations due to the presence of the air-layer between glass-fiber felts, which can be theoretically explained by the resonance effect. It is found that sound transmission loss can be improved by increasing the number of air-layers. }, number={3}, journal={TEXTILE RESEARCH JOURNAL}, author={Yang, Yong and Li, Binbin and Chen, Zhaofeng and Sui, Ni and Chen, Zhou and Xu, Tengzhou and Li, Yufang and Fu, Renli and Jing, Yun}, year={2017}, month={Feb}, pages={261–269} } @article{yang_li_chen_sui_chen_saeed_li_fu_wu_jing_2016, title={Acoustic properties of glass fiber assembly-filled honeycomb sandwich panels}, volume={96}, ISSN={["1879-1069"]}, DOI={10.1016/j.compositesb.2016.04.046}, abstractNote={A new composite structure (glass fiber assembly-filled honeycomb sandwich panel) is prepared in order to improve the acoustic properties. Effect of glass fiber assembly with different filling shapes (random and fiber ball), fiber diameter, fiber content and air-layer on acoustic properties are explored. Sound absorption coefficient (SAC) and sound transmission loss (STL) are determined by a B&K impedance tube. The experiment results indicate that the first resonance frequency of SAC disappears along with the improvement of the second resonance frequency by reducing the fiber diameter or increasing the fiber content. STL can be improved by the increase of the fiber content. Random glass fiber assembly with the fine fibers has the best STL in the all testing samples. The advantage of glass fiber assembly for improving the STL of honeycomb sandwich panel is particularly clear at frequencies below 4.5 kHz. Especially, the STL difference reaches the maximum at around 20 dB at frequencies below 3.0 kHz.}, journal={COMPOSITES PART B-ENGINEERING}, author={Yang, Yong and Li, Binbin and Chen, Zhaofeng and Sui, Ni and Chen, Zhou and Saeed, Muhammad-Umar and Li, Yufang and Fu, Renli and Wu, Cao and Jing, Yun}, year={2016}, month={Jul}, pages={281–286} } @article{sui_yan_huang_xu_yuan_jing_2015, title={A lightweight yet sound-proof honeycomb acoustic metamaterial}, volume={106}, ISSN={["1077-3118"]}, DOI={10.1063/1.4919235}, abstractNote={In this letter, a class of honeycomb acoustic metamaterial possessing lightweight and yet sound-proof properties is designed, theoretically proven, and then experimentally verified. It is here reported that the proposed metamaterial having a remarkably small mass per unit area at 1.3 kg/m2 can achieve low frequency (<500 Hz) sound transmission loss (STL) consistently greater than 45 dB. Furthermore, the sandwich panel which incorporates the honeycomb metamaterial as the core material yields a STL that is consistently greater than 50 dB at low frequencies. The proposed metamaterial is promising for constructing structures that are simultaneously strong, lightweight, and sound-proof.}, number={17}, journal={APPLIED PHYSICS LETTERS}, author={Sui, Ni and Yan, Xiang and Huang, Tai-Yun and Xu, Jun and Yuan, Fuh-Gwo and Jing, Yun}, year={2015}, month={Apr} } @article{shen_xie_sui_wang_cummer_jing_2015, title={Broadband Acoustic Hyperbolic Metamaterial}, volume={115}, ISSN={["1079-7114"]}, DOI={10.1103/physrevlett.115.254301}, abstractNote={In this Letter, we report on the design and experimental characterization of a broadband acoustic hyperbolic metamaterial. The proposed metamaterial consists of multiple arrays of clamped thin plates facing the y direction and is shown to yield opposite signs of effective density in the x and y directions below a certain cutoff frequency, therefore, yielding a hyperbolic dispersion. Partial focusing and subwavelength imaging are experimentally demonstrated at frequencies between 1.0 and 2.5 kHz. The proposed metamaterial could open up new possibilities for acoustic wave manipulation and may find usage in medical imaging and nondestructive testing.}, number={25}, journal={PHYSICAL REVIEW LETTERS}, author={Shen, Chen and Xie, Yangbo and Sui, Ni and Wang, Wenqi and Cummer, Steven A. and Jing, Yun}, year={2015}, month={Dec} } @article{sui_yan_huang_xu_yuan_jing_2015, title={Response to "Comment on 'A lightweight yet sound-proof honeycomb acoustic metamaterial'" [Appl. Phys. Lett. 107, 216101 (2015)]}, volume={107}, ISSN={["1077-3118"]}, DOI={10.1063/1.4936238}, abstractNote={First Page}, number={21}, journal={APPLIED PHYSICS LETTERS}, author={Sui, Ni and Yan, Xiang and Huang, Tai-Yun and Xu, Jun and Yuan, Fuh-Gwo and Jing, Yun}, year={2015}, month={Nov} }