Carbon fiber acoustic baffle applied to underwater detection equipment

Abstract

The invention discloses a carbon fiber acoustic baffle applied to underwater detection equipment. The carbon fiber acoustic baffle applied to the underwater detection equipment includes a baffle body,a damping layer and a sound absorbing layer; the damping layer is closely adhered to one side of the baffle body, and the sound absorbing layer is closely adhered to the other side of the baffle body; the baffle body 1 adopts a structural form in which a shell wraps a carbon fiber honeycomb core material, and the carbon fiber honeycomb core material and the shell are both a carbon fiber reinforced resin composite structure; the shell and the carbon fiber honeycomb core material are bonded by resin; and the carbon fiber honeycomb core material forms cavities with the inside of the shell. According to the invention, the structural form in which the shell wraps the carbon fiber honeycomb core material is adopted; the carbon fiber honeycomb core material and the shell form a large number of independent and closed cavities as the sound insulation structure; and the propeller noise, mechanical noise and hull vibration sound radiation from the stern are blocked by using the impedance mismatch effect; therefore, the impact of such noise on the underwater detection equipment is reduced, and the detection performance of the equipment is improved.

Description

technical field [0001] The invention relates to the technical field of vibration reduction and noise reduction, in particular to a carbon fiber acoustic baffle used for underwater detection equipment. Background technique [0002] The bulbous bow of modern large and medium-sized ships is mostly equipped with underwater detection equipment, and its performance is affected by the acoustic environment in the bulbous bow dome. The vibration and noise of the equipment interfere with the normal operation of the underwater acoustic detection equipment. At present, the acoustic baffle is gradually applied to the bulbous bow dome as a noise reduction structure to reduce the water load generated by the propeller and mechanical equipment from the stern. Noise, the structural design of sound baffles mainly focuses on metal and low-density foam materials. Metal sound baffles have the problems of heavy weight and inconvenient installation in small spaces. Low-density foam materials also h...

AI Technical Summary

Problems solved by technology

[0002] The bulbous bow of modern large and medium-sized ships is mostly equipped with underwater detection equipment, and its performance is affected by the acoustic environment in the bulbous bow dome. The vibration and noise of the equipment interfere with the normal operation of the underwater acoustic detection equipment. At present, the acoustic baffle is gradually applied to the bulbous bow dome as a noise reduction structure to reduce the water load generated by the propeller and mechanical equipment from the stern. Noise, the structural design of sound baffles mainly focuses on metal and low-density foam materials. Metal sound baffles have the problems of heavy weight and inconvenient installation in small spaces. Low-density foam materials also have insufficient strength and require other structures Auxiliary supports and other defects, therefore, the present invention proposes a carbon fiber acoustic baffle for underwater detection equipment to solve the problems in the prior art

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