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DC FieldValueLanguage
dc.contributorMulti-disciplinary Studiesen_US
dc.creatorWong, Kin-yan-
dc.identifier.urihttps://theses.lib.polyu.edu.hk/handle/200/3530-
dc.languageEnglishen_US
dc.publisherHong Kong Polytechnic University-
dc.rightsAll rights reserveden_US
dc.titleHydraulic breaker : noise impact and controlen_US
dcterms.abstractThe study on the noise control of hydraulic hammer was by the close-fit enclosure technique , and emphasis on the characteristic of middle to high frequency range created by the hydraulic breaker. A laboratory model was set up to simulate the performance of a hydraulic breaker and to identify qualitative factors which affected the performance of an hydraulic breaker enclosure. Enclosures made with plywood and damped steel plate were test under different conditions. The performance parameters of laboratory models were deduced and comparied with measurements. After the laboratory tests, a prototype of a plywood enclosure was made on site and tested under site conditions. Site measurements of the noise created by hydraulic breaker were taken at two demolition sites. Results were analysised and compared with the laboratory model. The study revealed that the noise reduction on hydraulic breaker by the close-fit enclosure technique was feasible.en_US
dcterms.extent201 leaves : ill. ; 30 cmen_US
dcterms.isPartOfPolyU Electronic Thesesen_US
dcterms.issued1994en_US
dcterms.educationalLevelAll Masteren_US
dcterms.educationalLevelM.Sc.en_US
dcterms.LCSHNoise controlen_US
dcterms.LCSHConstruction equipment -- Noiseen_US
dcterms.LCSHHydraulic machineryen_US
dcterms.LCSHWrecking -- Noiseen_US
dcterms.LCSHHong Kong Polytechnic -- Dissertationsen_US
dcterms.accessRightsrestricted accessen_US

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