ASTM E3493-26

1.1 Test specimen preparation has a significant effect on the outcome of several acoustical material test methods, including Test Methods C384, C522, E1050, and E2611. The mounting conditions of the test specimen for these test methods require that a seal be created when the material is mounted into the test apparatus. The data accuracy and repeatability for these test methods may be affected if the test specimen is not prepared to fit within the tolerances of the small material test systems associated with this guide. If the specimens are not prepared adequately, the sides of the specimen will interact with the sidewalls of the test apparatus creating boundary conditions that may significantly affect the outcome of the measurement. This guide is for preparation of acoustical materials test specimen for measurement with the aforementioned standard test methods.

1.2 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this guide.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.