| 发明名称 |
METHOD OF ESTIMATING SOUND ABSORPTION OF POROUS FIBROUS MATERIALS |
| 摘要 |
FIELD: physics.SUBSTANCE: method of estimating sound absorption of porous fibrous materials includes measuring specific resistance to the flow of an air stream Rand determining the sound absorption coefficient α at a given frequency from regression equations which link Rand α. The invention can be used to estimate the sound absorption coefficient of porous fibrous materials, as well as porous materials with an open pore system.EFFECT: high accuracy of estimation.23 dwg, 3 tbl |
| 申请公布号 |
RU2578721(C1) |
申请公布日期 |
2016.03.27 |
| 申请号 |
RU20140144244 |
申请日期 |
2014.10.31 |
| 申请人 |
GOSUDARSTVENNOE NAUCHNOE UCHREZHDENIE "INSTITUT MEKHANIKI METALLOPOLIMERNYKH SISTEM IMENI V.A. BELOGO NATSIONALNOJ AKADEMII NAUK BELARUSI" (IMMS NAN BELARUSI) |
发明人 |
GOLDADE VIKTOR ANTONOVICH;SERGIENKO VLADIMIR PETROVICH;KHMARA ANASTASIJA SERGEEVNA;LEJBOVICH VLADIMIR VLADISLAVOVICH;BUKHAROV SERGEJ NIKOLAEVICH;JAKIMOVICH NIKOLAJ VIKTOROVICH |
| 分类号 |
G01N29/04;G01H3/00 |
主分类号 |
G01N29/04 |
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