Acoustic time histories from vibrating surfaces of a diesel engine

Document identifier: oai:DiVA.org:ltu-7680
Access full text here:10.1016/j.apacoust.2005.06.001
Keyword: Engineering and Technology, Mechanical Engineering, Fluid Mechanics and Acoustics, Teknik och teknologier, Maskinteknik, Strömningsmekanik och akustik, Teknisk akustik, Engineering Acoustics
Publication year: 2006
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Abstract:

An experiment on a diesel engine provides for validation of a method that retrieves source strength spectra, source strength time histories and sound pressure time histories of the engine's complex partial sources. The method is based on empirical transfer function measurements and inverse matrix calculations briefly described in the article. Different simplifying source models were selected by comparison of calculated and measured auto spectra. The results show: (1) indication of time efficient measurements of source strength spectra, (2) the importance of correct source models in the case of separated source strength time histories, and (3) spectra of separated sound pressure time histories. Listening tests reported that it is possible to detect well differentiated sounds of the partial sources as a result of the method.

Authors

Nicklas Frenne

Luleå tekniska universitet
Other publications >>

Örjan Johansson

Luleå tekniska universitet; Drift, underhåll och akustik
Other publications >>

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        identifier: oai:DiVA.org:ltu-7680
        datestamp: 2021-04-19T12:21:26Z
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                recordCreationDate: 2016-09-29
            identifier: 
                http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-7680
                10.1016/j.apacoust.2005.06.001
                2-s2.0-28844452144
                6154ec50-bcf0-11db-9be7-000ea68e967b
            titleInfo: 
                @attributes: 
                    lang: eng
                title: Acoustic time histories from vibrating surfaces of a diesel engine
            abstract: 
An experiment on a diesel engine provides for validation of a method that retrieves source strength spectra source strength time histories and sound pressure time histories of the engine's complex partial sources. The method is based on empirical transfer function measurements and inverse matrix calculations briefly described in the article. Different simplifying source models were selected by comparison of calculated and measured auto spectra. The results show: (1) indication of time efficient measurements of source strength spectra (2) the importance of correct source models in the case of separated source strength time histories and (3) spectra of separated sound pressure time histories. Listening tests reported that it is possible to detect well differentiated sounds of the partial sources as a result of the method.

            subject: 
                    @attributes: 
                        lang: eng
                        authority: uka.se
                    topic: 
                        Engineering and Technology
                        Mechanical Engineering
                        Fluid Mechanics and Acoustics
                    @attributes: 
                        lang: swe
                        authority: uka.se
                    topic: 
                        Teknik och teknologier
                        Maskinteknik
                        Strömningsmekanik och akustik
                    @attributes: 
                        lang: swe
                        authority: ltu
                    topic: Teknisk akustik
                    genre: Research subject
                    @attributes: 
                        lang: eng
                        authority: ltu
                    topic: Engineering Acoustics
                    genre: Research subject
            language: 
                languageTerm: eng
            genre: 
                publication/journal-article
                ref
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                Published
                2
                Validerad; 2006; 20070215 (biem)
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                        Frenne
                        Nicklas
                    role: 
                        roleTerm: aut
                    affiliation: Luleå tekniska universitet
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                        authority: ltu
                    namePart: 
                        Johansson
                        Örjan
                    role: 
                        roleTerm: aut
                    affiliation: 
                        Luleå tekniska universitet
                        Drift underhåll och akustik
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                        orjo
                        0000-0003-2955-2776
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                dateIssued: 2006
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                    type: host
                titleInfo: 
                    title: Applied Acoustics
                identifier: 
                    0003-682X
                    1872-910X
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                    detail: 
                            @attributes: 
                                type: volume
                            number: 67
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                                type: issue
                            number: 3
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                        start: 230
                        end: 248
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