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Patent Searching and Data


Title:
ACOUSTICALLY TRANSPARENT MEMBER AND METHOD FOR DESIGNING SAME
Document Type and Number:
WIPO Patent Application WO/2017/163804
Kind Code:
A1
Abstract:
In order to provide an acoustically transparent member that has an acoustically transparent band with an appropriate extent in a high frequency region and assures constant strength, an acoustically transparent member 10 is so configured that a core layer 104 is laminated between two skin layers 102A and 102B, and the skin layers 102A and 102B are formed of material with a higher degree of elasticity than a degree of elasticity of the core layer 104. A thickness ds of the skin layers satisfies the following formula (1) with respect to a center frequency f of a transparent frequency band, a sound velocity cw inside a medium surrounding the acoustically transparent member 10, a wavelength λ corresponding to the center frequency inside the medium, a longitudinal wave sound velocity cds inside the skin layers, and any natural number n.

Inventors:
TADOKORO MASATO (JP)
TANAKA YUSUKE (JP)
Application Number:
PCT/JP2017/008274
Publication Date:
September 28, 2017
Filing Date:
March 02, 2017
Export Citation:
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Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B32B7/02; G01S7/521; B63B49/00
Foreign References:
US4997705A1991-03-05
JP2015098086A2015-05-28
US20150369907A12015-12-24
US6831876B12004-12-14
JPH0450683A1992-02-19
Other References:
See also references of EP 3434466A4
Attorney, Agent or Firm:
NODA, SHIGERU (JP)
Noda 茂 (JP)
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