ASTM D7559/D7559M-09(2014) PDF

1.1 This test method is intended to determine the ability of an inflatable restraint cushion to retain air pressure at elevated pressures for a specified time interval.

1.2 Procedures and apparatus other than those stated in this test method may be used by agreement of purchaser and supplier, provided the specific deviations from the standard acknowledged in the report.

1.3 The results of this test method should not be used to predict the actual internal pressure decay of a cushion during a deployment.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.5 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 and health practices and determine the applicability of regulatory limitations prior to use.