Title:
VIBRATION MODE EXCITATION DEVICE DURING ROTATIONAL VIBRATION TEST
Document Type and Number:
Japanese Patent JP3950238
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To provide a definite vibrational characteristic without reducing a degree of a vacuum, by altering arbitrarily a vibration mode.
SOLUTION: A plurality of exciters 8(8-1 to 8-32) are arranged in a plurality of positions around a rotation test body such as a turbine blade to be tested for rotation and apply their forces to the rotation test body therein, while vibration receivers 9(9-1 to 9-32) are arranged in a plurality of positions around the rotation test body and receive vibrations of portions corresponding thereto. The exciters 8 and the vibration receivers 9 are controlled and driven by a controller. The rotary body receives the exciting forces in the arbitrary positions therearound, so that it is excited with an arbitrary excitation mode. Since the exciters 8 and the vibration receivers 9 are the same electromagnetic inductor, they have very simple exciting and vibration receiving constitution. A vacuum inside a casing can be maintained.
Inventors:
Yoshida, Tadashi
Application Number:
JP1998000269879
Publication Date:
April 27, 2007
Filing Date:
September 24, 1998
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
G01M7/02; G01M7/00; (IPC1-7): G01M7/02
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