PROBLEM TO BE SOLVED: To provide an acoustic transmission member having a wide acoustic transmission band in a high frequency region.SOLUTION: In a planar acoustic transmission member 10 having acoustic transmissivity, core layers 106A, 106B of (N+1) layer and an intermediate layer 104 (N=1) of N layer are laminated alternately between two skin layers 102A, 102B. The skin layers 102A, 102B and the intermediate layer 104 are formed of CFRP (Carbon fiber Reinforced Plastics) which is a material having a higher elastic modulus than the core layers 106A, 106B formed of rubber.
【課題】高周波領域に広い音響透過帯域を有する音響透過性部材を得ること。【解決手段】音響透過性を有する面状の音響透過性部材10は、2層のスキン層102A,102Bの間に、N+1層のコア層106A,106Bと、N層の中間層104(N=1)とが交互に積層されている。スキン層102A,102Bと中間層104とは、ゴムで形成されたコア層106A,106Bよりも弾性率が高い素材であるCFRP(Carbon fiber Reinforced Plastics)で形成されている。【選択図】図2
ACOUSTIC TRANSMISSION MEMBER
音響透過性部材
28.05.2015
Patent
Elektronische Ressource
Japanisch
IPC: | B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / G01S RADIO DIRECTION-FINDING , Funkpeilung |
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