ASTM E2611-24 引用标准 ASTM C634 ASTM E1050 ASTM E90 ISO 140-3 适用范围 1.1 该测试方法涵盖使用一根管子、四个麦克风和一个数字频率分析系统,通过确定声学传递矩阵来测量正常入射传输损耗和材料的其他重要声学特性。1.2 以 SI 单位表示的值应被视为标准值。本标准不包含其他计量单位。1.3 本标准
ASTM E 2611 - 17 Standard美国材料与试验协会标准Part 2 下载积分: 1800 内容提示: 7.2 Alignment—The front surface of test specimens shall bemounted normal to the tube axis unless the surface specif i callyis designed otherwise.7.3 Containment—With porous materials of low bulkdensity, it may be...
Designation: E2611 − 17Standard Test Method forNormal Incidence Determination of Porous MaterialAcoustical Properties Based on the Transfer Matrix Method 1This standard is issued under the f i xed designation E2611; the number immediately following the designation indicates the year oforiginal adoption...