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Wednesday, July 10 • 12:10 - 12:30
OPERATIONAL TRANSFER PATH ANALYSIS OF A DOMESTIC REFRIGERATOR

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Despite of the fact that the product design process of advanced mechanical systems have been developed substantially, the demand for noise and vibration diminution has become even more significant. Concordantly, Transfer Path Analysis (TPA) can be applied for the determination of important vibration and/or noise source(s), and crucial vibro-acoustic energy transfer path(s) in a system to develop the vibro-acoustic design. The technique used in this study is the Operational Transfer Path Analysis (OTPA) utilizing Crosstalk Cancellation (CTC) and Singular Value Decomposition (SVD). In the scope of this study, OTPA is applied to a domestic refrigerator to identify and order the critical vibration transmission path(s) in the system. The source-transfer paths-receiver model, sensor positions, and operational working conditions for the study are expressed in detail. Selection of correct transfer paths and receiver locations without changing the vibration source and operational conditions is investigated. In this sense, two different experimental studies are conducted on the refrigerator. The operational conditions are obtained by changing the compressor rotational speed and measurements at reference (input) and response (output) points are made for individual operational conditions. The OTPA is then implemented utilizing the obtained data sets and the contributions of vibro-acoustic energy transmission via individual transfer paths of the refrigerator are acquired and evaluated.

Moderators
avatar for Simon Jones

Simon Jones

Associate Professor, Rose-Hulman Institute of Technology
Professional interests include undergraduate engineering education, finite element modeling, ground-borne vibrations, vibrations of musical instruments, and dynamics of toys.
GM

Guilhem Michon

Professor, ISAE-SUPAERO

Authors

Wednesday July 10, 2019 12:10 - 12:30 EDT
St-Laurent 7

Attendees (6)