• Title/Summary/Keyword: Vibration prediction

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Prediction of Aircraft Noise (항공기소음 예측)

  • 강대준
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 1998.04a
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    • pp.728-734
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    • 1998

  • Aircraft noise is one of the main causes of environmental impact. It is more serious than any other noise nuisance. It has become an increasing source of annoyance to the large number of people who live in communities near airports. This paper demonstrates the prediction of aircraft noise using Integrated Noise Model(INM) 5.1 developed by U.S. FAA and aircraft noise contour map near airports.

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PREDICTION OF RAILROAD NOISE (철도소음의 예측)

  • 강대준;정일록
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 1994.10a
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    • pp.92-95
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    • 1994

  • Railroad noise is one of the main causes of environmental impact. Whenever a new railroad line is planned or a housing project near an existing railroad is proposed, an estimate of the relevant levels is usually required. For this, it is necessary to quantify those parameters that affect the railroad noise. This paper presents an accurate prediction of railroad noise.

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Prediction of Sound Radiation Power from Coupled Structures using SEA (SEA 법에 의한 결합구조물의 음향방사파워 예측)

  • 오재응
    • Proceedings of the Acoustical Society of Korea Conference
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    • 1987.11a
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    • pp.24-30
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    • 1987

  • SEA method have been developed for prediction sound radiation power from vibration of machinery. In this study, sound radiation power was predicted from coupled structures by transmission of vibration, which composed of two plates welded at right angle. The predicted sound radiation power is agreement within 2 or 3 dB on octave band comparing with values obtained from direct measurements. Also, in order to prove the validity of this method in changes of sound radiation power associated with modifications to structures, rubber pad stuck on a plate. This result is agreement approximately within 3 or 5 dB.

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Development of the prediction method of aircraft exterior noise (항공기 외부소음 예측기법의 개발)

  • Shim, In-Bo;Lee, Duck-Joo
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2000.06a
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    • pp.78-83
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    • 2000

  • Exterior noise generated by the aircraft induces a serious noise pollution near the airport. For the prediction of an exterior noise radiation of aircraft an empirical formula is employed to model the acoustic sources. It is shown that the fan/compressor noise is the most dominant part of the acoustic sources in all cases.

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Prediction of Aircraft Noise (항공기소음 예측)

  • Kang, Dae-Joon
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2000.06a
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    • pp.110-116
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    • 2000

  • Aircraft noise is one of the main causes of environmental impact. It is more serious than any other noise nuisance. It has become an increasing source of annoyance to the large number of people who live in communities near airports. This paper demonstrates the prediction of aircraft noise using Integrated Noise Model (INM) 5.1 developed by U.S. FAA and aircraft noise contour map near airports.

  • PDF