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점탄성층을 삽입한 3층 적층보의 진동감쇠특성에 관한 연구
박응순(Eung-Soon Park),박세만(Sae Man Bhak),박명균(Myung Kyun Park),박상규(Sang Kyu Park) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_1
For a number of years it has been known that flexural vibrations in a plate can be damped by the application of a layer of damping (viscoelastic) material that is in turn constrained by a backing layer or foil. A common example is the damping tape currently used in aircraft and electronic equipment.<br/> This paper present a quantitative analysis of the resultant damping of the sandwiched beam. As in the work of H. Oberst the damping is characterized by the loss factor ??. which the damping is the normalized imaginary part of the complex bending stiffness of damped plate.<br/> An experimental technique known as the impulse technique is presented for measuring the vibration damping of composite materials<br/> <br/>
충격기법을 이용한 샌드위치보에 내재된 점탄성 성질에 관한 연구
박명균,박세만,박상규,박응순 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-
For a number of years it has been known that flexural vibrations in a plate can be damped by the application of a layer of viscoelastic material that is in turn constrained by a backing layer or foil. A common example is the damping tape currently used in aircraft. This paper presents a quantitative analysis of the damping effectiveness of such a constrained layer. As in the work of H. Oberst the damping is characterized by the loss factor η, which is the normalized imaginary part of the complex bending stiffness of the damped beam.