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    Editorial – Should we eliminate hands-on laboratories in undergraduate curricula?

    Raj Singh
    Sound & Vibration, Vol.52, No.1, pp. 1-1, 2018, DOI:10.32604/sv.2018.03601
    Abstract This article has no abstract. More >

  • Open AccessOpen Access


    Effects of Precise FRF Measurements for Frequency Based Substructuring

    Julie Harvie, Peter Avitabile
    Sound & Vibration, Vol.52, No.1, pp. 3-7, 2018, DOI:10.32604/sv.2018.03618
    Abstract Impedance modeling is often utilized to generate frequency response functions of an assembled system using modal characteristics of individual components. Sometimes slight inaccuracies are manifested in the characteristics of the components. Although those inaccuracies may seem minor in regards to the component for a traditional modal model, the inaccuracies can be amplified when impedance modeling is performed. Frequency based substructuring involves inversion of the frequency response functions and therefore requires considerable accuracy for the measurement, particularly in the area of anti-resonances.
    For this study, some aspects of frequency based substructuring were explored, namely difficulties that might More >

  • Open AccessOpen Access


    Designing Hardware for the Boundary Condition Round Robin Challenge

    David E. Soine, Richard J. Jones, Jr., Julie M. Harvie, Troy J. Skousen, Tyler F. Schoenherr
    Sound & Vibration, Vol.52, No.1, pp. 9-12, 2018, DOI:10.32604/sv.2018.03629
    Abstract Qualification of products to their vibration and shock requirements in a laboratory setting consists of two basic steps. The first is the quantification of the product’s mechanical environment in the field. The second is the process of testing the product in the laboratory to ensure it is robust enough to survive the field environment. The latter part is the subject of the “Boundary Condition for Component Qualification” challenge problem. This paper describes the challenges in determining the appropriate boundary conditions and input stimulus required to qualify the product. This paper also describes the step sand More >

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