(WO/2005/038154) COMPOSITE ACOUSTIC ATTENUATION MATERIALS
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| Latest bibliographic data on file with the International Bureau
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| Pub. No.: | WO/2005/038154 | International Application No.: | PCT/US2004/032586 | |||
| Publication Date: | 28.04.2005 | International Filing Date: | 04.10.2004 | |||
| Chapter 2 Demand Filed: 04.10.2004 | ||||||
| IPC: | G10K 11/16 (2006.01) | |||||
| Applicant: | THE UNITED STATES OF AMERICA as represented by THE SECRETARY OF THE NAVY NAVAL MEDICAL RESEARCH CENTER, CODE 00L [US/US]; 503 Robert Grant Avenue, Silver Spring, MD 20920 (US). | |||||
| Inventors: | THOMAS, Gerald, B.; (US). VAN DYKE, Paul; (US). GUY, Bruce; (US). VIKSNE, George; (US). | |||||
| Priority Data: |
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| Title: | COMPOSITE ACOUSTIC ATTENUATION MATERIALS | |||||
| Abstract: | The present invention provides means of enhancing the acoustic attenuation and vibration damping of a material by (1) embedding a plurality of small particles of either a high characteristic acoustic impedance or a low characteristic acoustic impedance or combinations of high and low characteristic acoustic impedance materials to form a matrix material to act as a acoustic attenuator or vibration damper; and (2) combing this matrix material with a second layer of a decoupling material that serves to effectively isolate the matrix material and reduce its tendency to vibrate sympathetically to the impinging acoustic energy. The mass of the resultant material may be very low while retaining excellent acoustic attenuation, vibration damping, and structural characteristics. | |||||
| Designated States: |
AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW. African Regional Intellectual Property Org. (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW) Eurasian Patent Organization (EAPO) (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM) European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR) African Intellectual Property Organization (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). |
| Publication Language: | English (EN) |
| Filing Language: | English (EN) |
