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국내 최대 기계 및 로봇 연구정보
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  • 공학설계D/B

    공학설계D/B 게시판 내용
    Volume Title Vibration and Acoustic Fatigue
    Volume No General (bandwidth correction, combination of levels, stiffnesses of laminated plates, design against fatigue) and Endurance under acoustic loading.
    DATA Title Combination of levels in dB.
    DATA Item 66017
    KEYWORD combination, decibel, level, noise, pressure, sound
    ISBN
    ABSTRACT ESDU 66017 provides a method of determining the combined sound level resulting from two or more sources of known levels. The method may be used to obtain the overall level for a single source by combination of the levels in particular frequency bands. Data are provided as an equation and in graphical form, and an example of their use is given.

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