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Статті в журналах з теми "Acoustic absorber"
Herlina Sari, Nasmi, and Jauhar Fajrin. "Acoustic Properties of Sound Absorber from Modified Polyester with Filler Sodium Bicarbonate." Oriental Journal of Chemistry 34, no. 4 (August 25, 2018): 2187–91. http://dx.doi.org/10.13005/ojc/3404061.
Повний текст джерелаXu, Weikai, Yingchun Tang, Meng Zhang, Wuchao Qi, and Wei Wang. "Arbitrary shaped acoustic omnidirectional absorber based on transformation theory." International Journal of Modern Physics B 34, no. 11 (April 30, 2020): 2050111. http://dx.doi.org/10.1142/s0217979220501118.
Повний текст джерелаPutra, Azma, D. Hafizah, M. Y. Yaakob, and Mohd Jailani Mohd Nor. "Study on the Use of Micro-Perforated Panel to Improve Acoustic Performance in Mosque." Applied Mechanics and Materials 393 (September 2013): 971–75. http://dx.doi.org/10.4028/www.scientific.net/amm.393.971.
Повний текст джерелаHalama, Jakub, Milan Klapka, and Ivan Mazůrek. "Experimental Methodology for Acoustic Diagnostics of Shock Absorbers." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 66, no. 5 (2018): 1119–25. http://dx.doi.org/10.11118/actaun201866051119.
Повний текст джерелаLiu, Xingxing, Xiang Li, and Zhiying Ren. "Miniaturized Spiral Metamaterial Array for a Ventilated Broadband Acoustic Absorber." Shock and Vibration 2020 (November 2, 2020): 1–6. http://dx.doi.org/10.1155/2020/8887571.
Повний текст джерелаLerner, Lawrence, and Stephen P. Diskin. "Portable adjustable acoustic absorber." Journal of the Acoustical Society of America 83, no. 2 (February 1988): 845–46. http://dx.doi.org/10.1121/1.396070.
Повний текст джерелаNaify, Christina J., Theodore P. Martin, Christopher N. Layman, Michael Nicholas, Abel L. Thangawng, David C. Calvo, and Gregory J. Orris. "Underwater acoustic omnidirectional absorber." Applied Physics Letters 104, no. 7 (February 17, 2014): 073505. http://dx.doi.org/10.1063/1.4865480.
Повний текст джерелаWang, Heng, and Qibo Mao. "Development and Investigation of Fully Ventilated Deep Subwavelength Absorbers." Symmetry 13, no. 10 (October 1, 2021): 1835. http://dx.doi.org/10.3390/sym13101835.
Повний текст джерелаEl-Raheb, M., and P. Wagner. "Damped Response of Shells by a Constrained Viscoelastic Layer." Journal of Applied Mechanics 53, no. 4 (December 1, 1986): 902–8. http://dx.doi.org/10.1115/1.3171879.
Повний текст джерелаNg, C. F., and Qin Hao-Ming. "Double Perforated Honeycomb Panel as a Low Frequency Acoustic Absorber." Building Acoustics 4, no. 1 (March 1997): 21–37. http://dx.doi.org/10.1177/1351010x9700400102.
Повний текст джерелаДисертації з теми "Acoustic absorber"
Parkinson, Jerome P. "Acoustic absorber design." Thesis, University of Canterbury. Mechanical Engineering, 1999. http://hdl.handle.net/10092/6414.
Повний текст джерелаOnen, Onursal. "Development Of An Effective Single Layer Micro-perforated Sound Absorber." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12610064/index.pdf.
Повний текст джерелаEstève, Simon J. "Control of sound transmission into payload fairings using distributed vibration absorbers and Helmholtz resonators." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/11183.
Повний текст джерелаPh. D.
Halama, Jakub. "Metodika pro bezkontaktní diagnostiku automobilových tlumičů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-377521.
Повний текст джерелаIurasov, Volodymyr. "Contrôle passif en vibroacoustique avec absorbeur dynamique bistable." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0034.
Повний текст джерелаThe work presented in this thesis is dedicated to the study of a continuous bistable absorber based on the principle of Nonlinear Energy Sink (NES) and its use for the vibration mitigation of a many-degree-offreedom mechanical systems under acoustic excitation. The analytical model of the linear behavior of the absorber and its complete numerical model were presented, analyzed and validated by series of experiments. The complexity of the Targeted Energy Transfer (TET) between the absorber and the primary system did not allow a simple analytical description. We have chosen to concentrate this study on the experimental and numerical exploration of the absorber coupled to mechanical systems under harmonic and random excitations, as well as on the identification of the mechanisms of energy transfer. The coupled system have shown very rich dynamics as it possessed different regimes of TET, which were earlier described in literature for other types of NES. This project was funded by Saint-Gobain. The absorber was adapted for the application foreseen by the industrial supervisors of the PhD: the vibration control of partitioning double walls under acoustic excitation so that to improve the acoustic isolation provided by the system. The qualitative knowledge on the absorber dynamics obtained from the experimental and numerical results, as well as the analogy with the other types of NES, permitted the creation of an absorber which corresponds to the problematic. The ways for the further optimization and development of the absorber were identified and preliminary simulations were provided
Proctor, Martin J. "Ultrasound power measurement : a microprocessor based device utilising thermal expansion of a total absorber." Thesis, University of Aberdeen, 1987. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU009820.
Повний текст джерелаLeng, Julien. "Controlling flexural waves using subwavelength perfect absorbers : application to Acoustic Black Holes." Thesis, Le Mans, 2019. http://www.theses.fr/2019LEMA1027/document.
Повний текст джерелаThe vibration control adapted to light structures is a scientific and technological challenge due toincreasingly stringent economic and ecological standards. Meanwhile, recent studies in audible acoustics havefocused on broadband wave absorption at low frequencies by means of subwavelength perfect absorbers. Suchmetamaterials can totally absorb the energy of an incident wave. The generalisation of this method for applicationsin elastodynamics could be of great interest for the vibration control of light structures.This thesis aims at adapting the perfect absorption problem for flexural waves in 1D and 2D systems with localresonators using the critical coupling condition. A study of 1D systems with simple geometries is first proposed. Thisprovides methods to design simple resonators for an effective absorption of flexural waves. The 1D systems thenbecome more complex by studying the critical coupling of 1D Acoustic Black Holes (ABH). The ABH effect is theninterpreted using the concept of critical coupling, and key features for future optimisation procedures of ABHs arepresented. The critical coupling condition is then extended to 2D systems. The perfect absorption by the firstaxisymmetric mode of a circular resonator inserted in a thin plate is analysed. Multiple scattering by an array ofcircular resonators inserted in an infinite or semi-infinite 2D thin plate, called metaplate, is also considered to getclose to practical applications. Through this thesis, analytical models, numerical simulations and experiments areshown to validate the physical behaviour of the systems presented
Nash, Grant. "Utilizing Distributed Vibration Absorbers to Reduce Noise Transmission Through the Windshield of a Cessna 150." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/34508.
Повний текст джерелаReducing interior aircraft noise levels is a complicated joint effort, combining propeller radiation control; fuselage wall reduction methods; exhaust emission regulation, management of air turbulence; some propeller, wake-induced vibration control; and a little engine vibration restraint. For minimum propeller acoustic propagation, it is important to control propeller radiation by using techniques such as increasing the number of blades, altering blade airfoil (especially using a felix or grooved design); applying small angle of attack; utilizing swept blades; decreasing blade diameter; lowering tip speed; and reducing the load on a propeller (i.e. by controlling the blade thickness, tip volume, and blade shape). Controlling the vibration in the fuselage skin can also help to reduce interior noise. Some early attempts were made using ribs/stiffeners, tuned dampers, and a limp mass double wall. More recently, dynamic vibration absorbers have been utilized, quite successfully, to reduce fuselage skin vibration and thus, interior noise levels. Attempting to control the exhaust emission and induced vibration from air turbulence has contributed to lower airplane cabin noise levels as well. For large aircrafts, the strategic location of luggage compartments and bathrooms help in keeping the interior quiet. Most importantly for small single-engine aircraft, the windshield has been found to contribute heavily to aircraft interior noise levels.
Currently, the use of active control methods (especially the active structural acoustic control methods) and the utilization of dynamic vibration absorbers (a form of passive noise control) are the most popular techniques to reduce interior aircraft noise levels. In small general aviation aircraft, the blade passage frequency (bpf) and the first few harmonics have been found to be the largest contributor to noise transmitting into the fuselage. This project analyzes a two degree-of-freedom (DOF) dynamic vibration absorber in hopes of reducing windshield vibration of a Cessna 150 fuselage at the fundamental blade passage frequency of approximately 87 Hz and thus, reducing noise transmitting into the interior of the aircraft.
This research project is unique in several ways. First, numerous passive noise control techniques have been utilized to control vibration and acoustics on an aircraft, but none have used the two degree of freedom Distributed Vibration Absorbers (DVA) employed in this project, as a noise reduction method on the windshield of an aircraft. Secondly, little research has been done on analyzing noise transmission into small, single engine general aviation aircraft, which is conducted in the work here. Third, little work has been done on analyzing and reducing noise propagation through the windshield of a small engine aircraft, which is also analyzed in this project. Finally, the modal analysis conducted on the windshield of the small engine plane is one of the few modal decompositions that has been conducted on a small general aircraft windshield.
Master of Science
Bryk, Pierre-Yvon. "Pompage énergétique en acoustique par absorbeur dynamique non-linéaire hybride passif-actif." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0114.
Повний текст джерелаThis thesis is devoted to the study of a hybrid passive-active nonlinear dynamic absorber for the reduction of noise in low frequencies. The passive part of the ADNLH is a membrane in latex with a nonlinear deformation and its front face coupled to the acoustic field to be reduced. This membrane is acting as a nonlinear oscillator and is part of the family of absorbers known as Nonlinear Sink Energy (NES). The rear face is enclosed and a active device is included inside this enclosure. This device is designed in order to modify the linear stiffness and the damping of the membrane. Previous work has been done only on the passive part (the membrane) and has validated the principle of energy pumping for Acoustics. However the membrane has some limitations (like the threshold of energy pumping) that restrain the practical applications. The goal of the ADNLH is to improve the performance of the energy pumping by modifying the linear properties of the membrane with the help of the active device. In a first time an experimental and theoretical study of the ADNLH is done. Then the ADNLH is coupled to a tube of air thanks to an academic assembly under a sinusoidal excitation or broadband. It allows to cut the top off the first acoustic resonance of the tube with better performances than the membrane alone. At last the ADNLH is set inside a weakly damped room. The ADNLH allows to attenuate the first resonance of the room in the case of a sinusoidal excitation. One also shows that the control of the damping of the membrane is the key parameter for the performance of the ADNLH
Hua, Xin. "ADVANCED STUDIES ON TRANSFER IMPEDANCE WITH APPLICATION TO AFTER-TREATMENT DEVICES AND MICRO-PERFORATED PANEL ABSORBERS." UKnowledge, 2013. http://uknowledge.uky.edu/me_etds/30.
Повний текст джерелаКниги з теми "Acoustic absorber"
Cox, Trevor J. Acoustic Absorbers and Diffusers. London: Taylor & Francis Group Plc, 2004.
Знайти повний текст джерелаFuchs, Helmut V. Applied Acoustics: Concepts, Absorbers, and Silencers for Acoustical Comfort and Noise Control. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-29367-2.
Повний текст джерелаPeter, D'Antonio, ed. Acoustic absorbers and diffusers: Theory, design, and application. New York, NY: Spon Press, 2006.
Знайти повний текст джерелаCox, Trevor J. Acoustic absorbers and diffusers: Theory, design, and application. London: Spon Press, 2004.
Знайти повний текст джерелаPeter, D'Antonio, ed. Acoustic absorbers and diffusers: Theory, design, and application. 2nd ed. London: Taylor & Francis, 2009.
Знайти повний текст джерелаFuchs, Helmut V. Applied Acoustics: Concepts, Absorbers, and Silencers for Acoustical Comfort and Noise Control: Alternative Solutions - Innovative Tools - Practical Examples. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.
Знайти повний текст джерелаVance, Mary A. Sound absorbent materials: A revision of A 662. Monticello, Ill., USA: Vance Bibliographies, 1988.
Знайти повний текст джерелаCox, Trevor J. Acoustic Absorbers and Diffusers. CRC Press, 2002. http://dx.doi.org/10.1201/9781482288254.
Повний текст джерелаAcoustic Absorbers and Diffusers. Routledge, 2009. http://dx.doi.org/10.4324/9780203893050.
Повний текст джерелаAcoustic Absorbers and Diffusers. Routledge, 2004. http://dx.doi.org/10.4324/9780203492994.
Повний текст джерелаЧастини книг з теми "Acoustic absorber"
Putra, Azma, Iwan Prasetiyo, and Zulkefli Selamat. "Green Acoustic Absorber from Pineapple Leaf Fibers." In Pineapple Leaf Fibers, 143–65. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1416-6_8.
Повний текст джерелаMustafa, Mohd Syafiq Syazwan, Mohammad Amin Nurasyid, Kamarul Aini Mohd Sari, Fatimah Yusop, Mariah Awang, M. A. A. Rahman, Nuramidah Hamidon, Mohd Kamaruzaman Musa, and Faridahanim Ahmad. "Utilizing Natural Fibre as a Sustainable Acoustic Absorber." In Lecture Notes in Mechanical Engineering, 243–56. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0742-4_17.
Повний текст джерелаYahya, K., Z. Haron, S. N. Shaikh Abdul Hamid, N. Mohd Fasli, and E. M. Taiwo. "The Potential of Pineapple Leaf Fibre as an Acoustic Absorber." In Proceedings of AICCE'19, 919–31. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-32816-0_68.
Повний текст джерелаMakni, Amine, Marwa Kani, Mohamed Taktak, and Mohamed Haddar. "Evaluation of the Acoustic Performance of Perforated Multilayer Absorber Materials." In Applied Condition Monitoring, 155–70. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-76517-0_18.
Повний текст джерелаKamal, Tafzeelul, Issam Wajih, Vikas Sharma, Yasser Rafat, and M. A. Siddiqui. "Evaluation of Agricultural Waste Natural Fiber as an Acoustic Absorber for Reduction of Industrial Noise." In Design Science and Innovation, 335–41. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9054-2_38.
Повний текст джерелаMöser, Michael. "Sound Absorbers." In Engineering Acoustics, 119–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-05391-1_6.
Повний текст джерелаMöser, Michael. "Sound absorbers." In Engineering Acoustics, 171–215. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-92723-5_6.
Повний текст джерелаMechel, Fridolin P. "Porous Absorbers." In Formulas of Acoustics, 272–328. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-07296-7_6.
Повний текст джерелаMechel, Fridolin P. "Compound Absorbers." In Formulas of Acoustics, 329–430. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-07296-7_7.
Повний текст джерелаFuchs, Helmut V. "Passive Absorbers." In Applied Acoustics: Concepts, Absorbers, and Silencers for Acoustical Comfort and Noise Control, 31–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-29367-2_4.
Повний текст джерелаТези доповідей конференцій з теми "Acoustic absorber"
Gieva, Elitsa Emilova, Ivelina Nikolaeva Ruskova, Krasimir Ivanov Nedelchev, and Ivan Mladenov Kralov. "COMSOL Numerical Investigation of Acoustic Absorber." In 2018 IX National Conference with International Participation (ELECTRONICA). IEEE, 2018. http://dx.doi.org/10.1109/electronica.2018.8439315.
Повний текст джерелаAzbaid El Ouahabi, Abdelhalim, Victor V. Krylov, and Daniel J. O'Boy. "Quasi-flat acoustic absorber enhanced by metamaterials." In 148th Meeting of the Acoustical Society of America. Acoustical Society of America, 2015. http://dx.doi.org/10.1121/2.0000010.
Повний текст джерелаClimente, Alfonso, Daniel Torrent, and Jose´ Sa´nchez-Dehesa. "Noise Reduction by Perfect Absorbers Based on Acoustic Metamaterials." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65247.
Повний текст джерелаVölker, Christine, and Ulrike Thesing. "Acoustic Optimization of a Blow Molded Resonant Absorber." In SAE 2003 Noise & Vibration Conference and Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2003. http://dx.doi.org/10.4271/2003-01-1568.
Повний текст джерелаBellizzi, Sergio, Bruno Cochelin, Philippe Herzog, Pierre-Olivier Matte´i, and Ce´dric Pinhe`de. "Experimental Investigation of Low Frequency Noise Reduction Using a Nonlinear Vibroacoustic Absorber." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-47431.
Повний текст джерелаUmnova, Olga, Andy S. Elliott, and Rodolfo Venegas. "Omnidirectional acoustic absorber with a porous core - theory and measurements." In ICA 2013 Montreal. ASA, 2013. http://dx.doi.org/10.1121/1.4799727.
Повний текст джерелаRedmann, Daniel, Reinhard Pongratz, and Joergen Zillmann. "Aeroacoustic liner applications of the broadband special acoustic absorber concept." In 19th AIAA/CEAS Aeroacoustics Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-2176.
Повний текст джерелаKusrini, Ayu Sinta, Iwan Yahya, Harjana, and Ubaidillah. "Acoustic performance of porous sound absorber based on Sterculia foetida Linn." In ADVANCED INDUSTRIAL TECHNOLOGY IN ENGINEERING PHYSICS. Author(s), 2019. http://dx.doi.org/10.1063/1.5095340.
Повний текст джерелаMehta, P. G., A. C. Zander, W. P. Patrick, and Y. Zhang. "Active acoustic treatment (AAT)-a step toward a perfect sound absorber." In Proceedings of the 1998 American Control Conference (ACC). IEEE, 1998. http://dx.doi.org/10.1109/acc.1998.703108.
Повний текст джерелаDan Yang, Qi-bai Huang, Lv-hui Ding, and Qian Zhang. "A transfer matrix approach for acoustic analysis of underwater piezoelectric composite absorber." In 2009 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA 2009). IEEE, 2009. http://dx.doi.org/10.1109/spawda.2009.5428939.
Повний текст джерелаЗвіти організацій з теми "Acoustic absorber"
Noise Absorption Behavior of Aluminum Honeycomb Composite. SAE International, September 2020. http://dx.doi.org/10.4271/2020-28-0453.
Повний текст джерела