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Dissertations / Theses on the topic 'Industrial noise Noise control'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Grenell, James F. "Spectral attenuation and wearability of circumaural hearing protectors as influenced by design attributes and work-related activity." Thesis, This resource online, 1988. http://scholar.lib.vt.edu/theses/available/etd-04272010-020352/.

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2

FOUTS, II BRUCE EDWARD. "INVESTIGATION INTO TESTING METHODS AND NOISE CONTROL OF INDUSTRIAL POWER TOOLS." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1029443901.

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3

Sheffer, Jennifer. "Worker exposure to noise during computer manufacturing measurement and control /." Online version, 2009. http://www.uwstout.edu/lib/thesis/2009/2009shefferj.pdf.

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4

Lam, Siu Tong. "Influence of insertion/donning instruction on frequency-specific sound attenuation achieved with ear canal caps and earmuffs with implications for industrial noise application." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/76037.

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A study was conducted to determine the dependency of sound attenuation capabilities of earmuffs and earcaps on various application instruction techniques including: (1) no instruction, (2) no instruction with 70 dBA auditory feedback, (3) manufacturers' package instruction, (4) detailed instruction, and (5) modeled instruction. The hearing protection devices (HPDs) studied were: two earcaps (Willson #20 Sound-Ban, Flents #055 Peace & Quiet Headband), and four earmuffs (E-A-R model 1000, Siebe Norton Industrial model 4540, Peltor H6A/v, and Willson 365A Sound Barrier). HPD comfort and wearer pr

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5

Barajas, Leandro G. "Process Control in High-Noise Environments Using A Limited Number Of Measurements." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/7741.

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The topic of this dissertation is the derivation, development, and evaluation of novel hybrid algorithms for process control that use a limited number of measurements and that are suitable to operate in the presence of large amounts of process noise. As an initial step, affine and neural network statistical process models are developed in order to simulate the steady-state system behavior. Such models are vitally important in the evaluation, testing, and improvement of all other process controllers referred to in this work. Afterwards, fuzzy logic controller rules are assimilated into a mathe

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6

Van, der Merwe Andre Francois. "An air suspension cushion to reduce human exposure to vibration." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/473.

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7

Cremonesi, Jose Fernando. "Método de análise do ruído em áreas industriais e controle por enclausuramento acústico das fontes." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/16/16132/tde-07062013-135401/.

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Os conceitos de arquitetura dão novas dimensões aos projetos de enclausuramento de fontes ruidosas por cabines acústicas no chão de fábrica, no que diz respeito às relações entre o ruído industrial e suas implicações no homem quanto à perda da audição, perda de produtividade e riscos de acidentes bem como as metodologias para controle do ruído e a inter-relação entre o ruído industrial e sua vizinhança. O objetivo foi o de desenvolver um método de projetar e construir cabines acústicas para o controle do ruído industrial. As cabines acústicas existentes são desenvolvidas visando apenas o contr

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8

Cechin, Cezar Augusto. "Análise do controle de ruído nos geradores de energia em uma balsa guindaste." Universidade Federal Fluminense, 2016. https://app.uff.br/riuff/handle/1/3961.

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Submitted by Joana Azevedo (joanad@id.uff.br) on 2017-07-03T12:52:37Z No. of bitstreams: 1 Dissert CEZAR AUGUSTO CECHIN.pdf: 2893279 bytes, checksum: 6041ec6c989e858605c656ff1fe6baab (MD5)<br>Approved for entry into archive by Biblioteca da Escola de Engenharia (bee@ndc.uff.br) on 2017-07-06T16:47:06Z (GMT) No. of bitstreams: 1 Dissert CEZAR AUGUSTO CECHIN.pdf: 2893279 bytes, checksum: 6041ec6c989e858605c656ff1fe6baab (MD5)<br>Made available in DSpace on 2017-07-06T16:47:06Z (GMT). No. of bitstreams: 1 Dissert CEZAR AUGUSTO CECHIN.pdf: 2893279 bytes, checksum: 6041ec6c989e858605c656ff1fe6baab

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9

Kaymak, Erkan. "Noise reduction and active noise control of high frequency narrow band dental drill noise." Thesis, Brunel University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.445923.

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10

Ma, Xuxin. "Ducted fan noise control." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B44143072.

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Ma, Xuxin, and 马旭鑫. "Ducted fan noise control." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B44143072.

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12

Belayat, Nadia Bousseksou. "Entertainment noise control in Algeria." Thesis, London Metropolitan University, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.523012.

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These last ten years, in Algeria noise pollution has become an environmental issue where people are exposed to unacceptable levels of noise. The main noise source is from traffic, from neighbourhood and domestic noise particularly {entertainment premises known as wedding halls}. Other significant sources of noise annoyance in Algeria include building construction and household noise as well as car alarms and even barking dogs. In this present study, my concern will be on one of the main noise source in Algeria which is noise from entertainment halls. In Algeria, there is no existing framework

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13

Copley-Woods, Djuna S. (Djuna Sunlight) 1977. "Aircraft interior acoustic noise control." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9330.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.<br>Includes bibliographical references (p. 45).<br>An experimental study was perfonned to determine which materials are best suited for internal aircraft noise reduction. An impedance tube with dimensions of a scaled aircraft was constructed and evaluated, and eleven materials were tested and compared based on their noise reduction properties, weight, and thickness. Polyvinylidene Fluoride was tested for use in active noise control for a large space.<br>by Djuna S. Copley-Woods.<br>S.B.

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14

Farooqui, Maaz. "Innovative noise control in ducts." Doctoral thesis, KTH, Farkost och flyg, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192927.

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The objective of this doctoral thesis is to study three different innovative noise control techniques in ducts namely: acoustic metamaterials, porous absorbers and microperforates. There has been a lot of research done on all these three topics in the context of duct acoustics. This research will assess the potential of the acoustic metamaterial technique and compare to the use of conventional methods using microperforated plates and/or porous materials. The objective of the metamaterials part is to develop a physical approach to model and synthesize bulk moduli and densities to feasibly cont

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15

Tu, Yifeng. "Multiple Reference Active Noise Control." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36790.

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The major application of active noise control (ANC) has been focused on using a single reference signal; the work on multiple reference ANC is very scarce. Here, the behavior of multiple reference ANC is analyzed in both the frequency and time domain, and the coherence functions are provided to evaluate the effectiveness of multiple reference ANC. When there are multiple noise sources, multiple reference sensors are needed to generate complete reference signals. A simplified method combines those signals from multiple reference sensors into a single reference signal. Although this method cou

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16

Mitchell, Morgan Adrienne. "Passive Noise Control in Incubators." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/51603.

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Incubators in the Neonatal Intensive Care Unit (NICU) are known to produce high Sound Pressure Levels (SPL) that can have detrimental effects on infants. Currently measured SPL in NICU's using traditional incubators are above the recommended 45 dB[A] threshold value [1]. Due to operating equipment and environmental noise, the sound level that is perceived by the developing newborn can cause both short and long term hearing loss as well as psychological damage [1].This thesis presents a study on how passive noise control devices can be used to reduce SPL levels in incubator NICU environments.

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17

Casey, Kathleen. "Noise making subjects /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2005. http://wwwlib.umi.com/cr/ucsd/fullcit?p3170240.

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18

Peng, Dandan, and 彭丹丹. "Compact environmental noise absorber." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/209491.

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With the development of the industry and the society, noise pollution becomes increasingly severe, especially in large cities. Generally, there are three major noise sources, namely industrial noise, traffic noise and community noise. In response, several measurements have been developed to achieve effective noise control. Examples of noise control methods are reduction of noise at source and abatement of noise during the transmission. Since noise sources are more difficult to control, and sometimes already fixed, noise control during sound transmission is more broadly applied. Traditional pas

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19

Chau, Pak-lam. "Evaluation on the effectiveness of noise barriers for road traffic noise mitigation /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20038173.

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20

Yip, Ying-ling. "Review of road traffic noise control." Click to view the E-thesis via HKUTO, 1998. http://sunzi.lib.hku.hk/hkuto/record/B42128523.

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21

Balaban, Murat. "Noise Source Identification And Adoption Of Proper Noise Control Strategies On Wheeled Tractors." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611838/index.pdf.

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This thesis is aimed at identifying the noise sources of a wheeled tractor to reduce the noise levels below the legislative limits by controlling noise sources through proper methodologies. The study focuses firstly on identifying the noise sources of a wheeled tractor by using proper noise source identification techniques. These techniques can be summarized as sound intensity measurements, sound power level determination studies and spectral analysis of the noise data acquired in the tests. Simple sound intensity mapping techniques are used and the intensity contour maps are generated to iden

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22

Rai, Arunkumar R. "Characterization of noise and design of active noise control technology in longwall mines." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4412.

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Thesis (M.S.)--West Virginia University, 2005.<br>Title from document title page. Document formatted into pages; contains xi, 65 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 63-64).

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23

Johansson, Marcus. "An indicative case-control study of noise perception due to environmental noise sources." Thesis, KTH, Marcus Wallenberg Laboratoriet MWL, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280546.

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The subject of the thesis was proposed by the acoustic consultancy firm Brekke & Strand, which is of relevance for their additional understanding and development of services and contribution to robust solutions. The aim with this thesis is to give indicative results and to dig deeper into the relation between environmental noise and the perception of the same, specially focusing on construction related noise but also permanent noise sources that originates from infrastructure. The area of interest to evaluate the study is a central location in Stockholm, specifically around Slussen.The imp

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24

Forsgren, Fredrik. "Active Noise Control in Forest Machines." Thesis, Umeå universitet, Institutionen för fysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-48661.

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Achieving a low noise level is of great interest to the forest machine industry. Traditionally this is obtained by using passive noise reduction, i.e. by using materials for sound isolation and sound absorption. Especially designs to attenuate low frequency noise tend to be bulky and impractical from an installation point of view. An alternative solution to the problem is to use active noise control (ANC). The basic principle of ANC is to generate an anti-noise signal designed to destructively interfere with the unwanted noise. In this thesis two algorithms (Feedback FxLMS and Feedforward FxLM

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25

Rybing, Peter. "Active Noise Control in Home Environment." Thesis, KTH, Reglerteknik, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-109486.

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Disturbing noise is a growing problem in the society. Also in the home environment noise making devices exist, for example the vacuum cleaner. A simple way to decrease the annoyance from a vacuum cleaner is to use personal passive ear defenders. A problem with passive ear defenders is that they also attenuate wanted signals, such as speech or music. In this thesis a pair of prototype active ear defenders for vacuum cleaner noise attenuation have been developed and evaluated. Active noise control technology was used, which solved the problem with wanted signal attenuation. A measured noise refe

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26

Munn, Jacqueline Marie. "Virtual sensors for active noise control /." Title page, abstract and table of contents only, 2003. http://web4.library.adelaide.edu.au/theses/09PH/09phm9668.pdf.

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27

Lane, Jeremy David. "Active Control of Noise Through Windows." Thesis, University of Canterbury. Mechanical Engineering dept, 2013. http://hdl.handle.net/10092/10523.

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Windows are a weakness in building facade sound transmission loss (STL). This coupled with the detrimental effects of excessive noise exposure on human health including: annoyance, sleep deprivation, hearing impairment and heart disease, is the motivation for this investigation of the STL improvements active noise control (ANC) of windows can provide. Window speaker development, ANC window experiments and analytical modelling of ANC windows were investigated. Five different window speaker constructions were characterised then compared with a previously developed window speaker. ANC window tes

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28

Yip, Ying-ling, and 葉影玲. "Review of road traffic noise control." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B42128523.

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29

Wang, Lin. "Active control of fluid-borne noise." Thesis, University of Bath, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501639.

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Fluid-borne noise is one of the main components of hydraulic noise. Its attenuation may have a significant effect on the cost of hydraulic systems. Standard passive silencers and dampers can be useful in reducing it in certain frequency ranges; however, these tend to be heavy, bulky and expensive. Active control algorithms, which are a comparatively recent means of reducing fluid-borne noise, can be applied to overcome this compromise. The work presented in this thesis is the development of some active control algorithms utilized in a simple hydraulic system to cancel a number of harmonic orde

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30

Rose, Michael Thomas. "Noise Control of Vacuum-Assisted Toilets." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/8789.

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Vacuum-assisted toilets make use of a large pressure difference between the ambient pressure and a vacuum tank to transport waste from the toilet bowl to the septic tank. This process requires 98% less water per flush making it an attractive product for transport vehicles such as airplanes, cruise ships, and trains. Unfortunately, the water savings come at the cost of high noise levels. This thesis investigates the acoustic characteristics of a vacuum-assisted toilet flush and several methods to reduce the radiated noise. Some methods include changing rinse parameters such as rinse pressure, r

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31

Spiteri, Matthew. "Aerodynamic control of bluff body noise." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/181529/.

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The main aim of this study was to investigate noise reduction techniques for bluff body noise. Three methods were investigated, using a splitter plate on a fairing- strut configuration, applying flow control to the surface of a fairing and fitting a splitter plate behind a isolated bluff body. Aerodynamic tests were performed in wind tunnel facilities using particle image velocimetry (PIV), hotwire anemometry, pressure sensors and a force balance. Acoustic tests using a microphone array, on-surface microphones and freefield mi- crophones were performed to investigate the noise generated by the

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32

Sun, Guohua. "Active Control of Impact Acoustic Noise." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1413542213.

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33

Kirkwood, A. D. "Aerdynamic noise generation in control valves." Thesis, University of Manchester, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517180.

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An experimental study into the phenomenon of aerodynamic noise generation in control valves has been performed. Several model representations of control valves have been studied, in addition to making measurements on several full size control valves. A high speed computer based data acquisition system, coupled with miniature high frequency surface mounted pressure transducers, has been used to obtain measurements of both the mean and fluctuating wall static pressures at several locations throughout the length of the flow apparatus. For known flow conditions, it has been possible to determine t

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34

Moodie, Alex Montfort. "A new methodology for sizing and performance predictions of a rotary wing ejector." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26678.

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Thesis (Ph.D)--Aerospace Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Dr. Daniel P. Schrage; Committee Member: Dr. Lakshmi N. Sankar; Committee Member: Dr. Richard J. Gaeta; Committee Member: Dr. Stephen M. Ruffin; Committee Member: Mark H. Waters. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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35

Kroeff, Gia. "Low frequency noise generated by industrial gas turbines." Thesis, Loughborough University, 2004. https://dspace.lboro.ac.uk/2134/14172.

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The silencing of the exhaust from industrial gas turbines is an important element of current designs as it can affect efficiency, space, noise and gas emissions. However, exhausts are very costly and the lower the frequency, the higher is the cost involved in trying to attenuate the noise due to the amount of material and space necessary to implement the exhaust system. In this work, the sources of noise from an exhaust system of a particular gas turbine are investigated. Improvements in understanding the unsteady behaviour of the flow in the exhaust system could potentially lead to an increas

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36

Ma, Ki-tin. "A review of the implementation of the noise control ordinance in Hong Kong /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1745783X.

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37

McBride, David Iain. "Air blast circuit breaker impulse noise : the role of audiometry in risk assessment of industrial noise." Thesis, University of Birmingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393839.

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38

Fay, Poppy. "Sounds of industry : reactions to music and noise in nineteenth-century Manchester : ...on the lips, in the halls , on the streets /." Connect to thesis, 2009. http://repository.unimelb.edu.au/10187/3593.

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Manchester, in the first half of the nineteenth century, held great fascination to many as an example of a town being remade and transformed by the technological developments of the Industrial Revolution. The transformations experienced included the rapid physical expansion of the town and its population and the reordering of its society from a traditional, rigid class structure, involving a powerful aristocracy and working-class citizens, to a new social hierarchy with a numerous and influential middle class—an emerging ‘urban aristocracy’ of people involved in manufacturing, commerce and oth

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39

Pallares, Joan. "Study of industrial environment using Zigbee protocol and modeling industrial noise." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-27025.

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This thesis is focused on the industrial environment. This study aims to understand the difficulties wireless communications have when performing in these types of environment with a specific standard (and protocol) Zigbee. These difficulties are due mainly to the physical effects and interferences as well the electromagnetic waves from these wireless transmission signals can suffer. The background of this project is to analyze how industries can implement wireless sensor networks (using Zigbee standard) for their factories in order for them to be beneficial i.e. reliable or if it is possible.

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40

Naravane, Sayli. "Effect of industrial noise on occupational skill performance capability." Diss., Online access via UMI:, 2009.

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Thesis (M.S.)--State University of New York at Binghamton, Thomas J. Watson School of Engineering and Applied Science, Department of Systems Science and Industrial Engineering, 2009.<br>Includes bibliographical references.

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41

Pettit, Michael D. "A compreshensive review of the hearing conservation program at XYZ Company." Online version, 2009. http://www.uwstout.edu/lib/thesis/2009/2009pettitm.pdf.

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42

Szoke, Matthew. "Trailing edge noise control using active flow control methods." Thesis, University of Bristol, 2019. http://hdl.handle.net/1983/e45a9e22-3146-4467-90c4-01d3b6aebeb3.

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Active flow control methods are investigated experimentally with the aim of reducing the trailing edge noise on a zero pressure gradient flat plate test rig. Flush-mounted microphones are embedded in the wall of the plate between the flow control section and the trailing edge to study the surface pressure fluctuations exposed on the wall by the turbulent boundary layer. Three different types of active flow control techniques are considered, namely uniform inclined flow suction, uniform inclined flow injection and inclined transverse jets. The velocity statistics reveal that inclined flow sucti

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43

Pei, Sun. "Noise Resistant Least Squares Based Adaptive Control." Thesis, KTH, Reglerteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92628.

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44

Strass, Michael. "Shot noise control in coherent nanoscale conductors." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=979705819.

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45

Grad, Janet R. "H¦0¦0 control of acoustic noise." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0010/NQ30614.pdf.

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46

So, K. L., and 蘇建霖. "A study of construction noise control technology." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31254743.

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47

Cheung, Shuk-ching, and 張淑晶. "Broadband noise control through a ducted opening." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48329678.

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Fresh air ventilation openings or windows are essential to most buildings but the openings allow considerable portions of noise to be transmitted from the outdoor into the indoor environment. This project studies relevant theoretical models through accurate numerical solutions, and seeks better designs to gain extra noise attenuation through the openings. The spectral method of Chebyshev collocation and the corresponding technique of out-going wave boundary conditions, for both ducted and flanged opening, are developed as numerical tools and validated by analytical examples. After estab

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48

Hamilton, Antonia Felicity de Courcy. "The role of noise in sensorimotor control." Thesis, University College London (University of London), 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404931.

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49

Trinder, M. C. J. "Active noise control in finite length ducts." Thesis, University of Essex, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371924.

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50

Duke, Cole Victor. "Analog Feedback Control of Broadband Fan Noise." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3646.

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Active noise control (ANC) has been implemented using analog filters to reduce broadband noise from a small axial cooling fan. Previous work successfully attenuated narrow-band, tonal portions of the noise using a digital controller. The practical performance limits of this system were reached and it was desirable to attenuate the noise further. Additional research, therefore, sought to attenuate broadband noise from the fan using a digital controller, but performance was limited by the group delay inherent in the digital signal processor (DSP). Current research attempts to further attenuate b

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