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A new test track for automotive squeak and rattle (S&R) detection
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.ORCID iD: 0000-0002-2237-878X
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.ORCID iD: 0000-0002-0216-5058
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
2014 (English)In: Applied Acoustics, ISSN 0003-682X, E-ISSN 1872-910X, Vol. 80, p. 79-85Article in journal (Refereed) Published
Abstract [en]

The perceived quality of interior sounds is of increasing importance in the automotive industry since it is important for the customer perception of vehicle quality. Squeak and rattle (S&R) is a group of intermittent interior noise that reduce the sense of quality dramatically. To identify and solve S&R problems the car manufacturers do both simulations and tests in laboratory of complete vehicles as well as subsystems. As a complement, to laboratory testing and for verification, complete vehicle tests at proving grounds are done. In order to systematically test for vehicle S&R noise at proving grounds there is a need for a new type of test track that in a controlled and repetitive ways excite vehicles at different frequencies. This paper describes such a new test track, called the Frequency Sweep Test Track (FSTT). The test track is based on sweep excitation and improves the precision when detecting and solving S&R issues. Different design considerations such as sweep waveform, frequency range and sweep rate are discussed. The track design is evaluated using a quarter-car model including a tandem ellipsoid tyre model. In a case study a FSTT was built and the excitation of a car was measured. The track excited the expected frequency range and the track operated well in detecting a rattle in the dashboard of an executive production car and at which frequency the rattle occurred.

Place, publisher, year, edition, pages
2014. Vol. 80, p. 79-85
National Category
Fluid Mechanics and Acoustics Other Civil Engineering
Research subject
Engineering Acoustics; Operation and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-10151DOI: 10.1016/j.apacoust.2014.01.010ISI: 000335278200009Scopus ID: 2-s2.0-84894588012Local ID: 8e790db9-d92e-4dbd-a508-607ee4a3fb10OAI: oai:DiVA.org:ltu-10151DiVA, id: diva2:983091
Projects
CASTT - Centre for Automotive Systems Technologies and Testing
Note
Validerad; 2014; 20140224 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Johnsson, RogerOdelius, JohanRantatalo, Matti

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