Method and apparatus for damping vibration in turbomachine components
First Claim
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1. An apparatus for passive damping of vibratory strain in a turbomachine component that experiences high steady state strain, the vibratory strain having associated with it mechanical energy, the apparatus comprising:
- a mechanical-to-electromagnetic energy transformer mechanically coupled to the component, said energy transformer receiving mechanical energy associated with the vibratory strain of the component and producing, from said mechanical energy, electromagnetic energy; and
an electromagnetic circuit electromagnetically coupled to said energy transformer, said circuit receiving electromagnetic energy, from said energy transformer, that is then dissipated through passive damping.
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Abstract
A method and apparatus reduces the magnitude of vibratory strain in a turbomachine component that experiences high steady state strain by, in the case of a passive embodiment, coupling a mechanical-to-electromagnetic energy converter to an interior and/or exterior surface of the component, and/or embedding the energy converter within the component, and by, in the case of an active embodiment, coupling a mechanical-to-electromagnetic energy converter to an interior and/or exterior surface of the component.
94 Citations
45 Claims
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1. An apparatus for passive damping of vibratory strain in a turbomachine component that experiences high steady state strain, the vibratory strain having associated with it mechanical energy, the apparatus comprising:
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a mechanical-to-electromagnetic energy transformer mechanically coupled to the component, said energy transformer receiving mechanical energy associated with the vibratory strain of the component and producing, from said mechanical energy, electromagnetic energy; and
an electromagnetic circuit electromagnetically coupled to said energy transformer, said circuit receiving electromagnetic energy, from said energy transformer, that is then dissipated through passive damping. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for passive damping of vibratory strain in a turbomachine component that experiences high steady state strain, the vibratory strain having associated with it mechanical energy, the method comprising:
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providing a mechanical-to-electromagnetic energy transformer mechanically coupled to the component, said energy transformer receiving mechanical energy associated with the vibratory strain of the component and producing, from said mechanical energy, electromagnetic energy; and
providing an electromagnetic circuit electromagnetically coupled to said energy transformer, said circuit receiving electromagnetic energy, from said energy transformer, that is then dissipated through passive damping.
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24. An apparatus for damping of vibratory strain in a turbomachine component that experiences high steady state strain, the component having a surface, the vibratory strain having associated with it mechanical energy, the apparatus comprising:
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a mechanical-to-electromagnetic energy transformer mechanically coupled to the surface of the component, said energy transformer receiving mechanical energy associated with the vibratory strain of the component and producing, from said mechanical energy, electromagnetic energy; and
an electromagnetic circuit electromagnetically coupled to said energy transformer, said circuit receiving electromagnetic energy, from said energy transformer, that is then dissipated through passive damping. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. An method for damping of vibratory strain in a turbomachine component that experiences high steady state strain, the component having a surface, the vibratory strain having associated with it mechanical energy, the apparatus comprising:
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providing a mechanical-to-electromagnetic energy transformer mechanically coupled to the surface of the component, said energy transformer receiving mechanical energy associated with the vibratory strain of the component and producing, from said mechanical energy, electromagnetic energy; and
providing an electromagnetic circuit electromagnetically coupled to said energy transformer, said circuit receiving electromagnetic energy, from said energy transformer, that is then dissipate through passive damping.
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Specification